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1/2 Counterbore Screws
12-point Flange Screws, Counterbore Screws, Ferry Head Cap Screws or Counterbore Screws, feature a 12 point head and a flanged bearing surface. Usually fully threaded, the 12-point design provides for higher tightening torque, without edge rounding and they are covered under ASME Standard B18.2.1
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| Search Results Sponsored by Metric Threaded Products, Inc., your source for 12 Point Flange Screws. For more results, visit www.metric-threaded.com | ||||||||
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| Supplier | Loc | Type | Material | Finish | Size | Description | Qty | |
| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Clear | 1/2-20 x 2 1/2 | 1/2-20 x 2 1/2 alloy zn 12 pt flange screws | 300 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Clear | 1/2-20 x 1 1/4 | 1/2-20 x 1 1/4 alloy zn 12 pt flange screws | 114 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Yellow | 1/2-20 x 7/8 | 1/2-20x7/8 alloy yzn 12 point flange bolt | stock |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-20 x 1 1/4 | 1/2-20x1 1/4 alloy blk 12 pt flange screws | stock |
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| Buy Counterbore Screws from one of our FCH Network Members | ||||||||
| TownCountry | AR | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2 x 13/64 | adjustable counterbore style #5 1/2 shank 4 1/2 oal | 1 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 3/4 | 12 pt countr-bor plain 1/2-13 x 3/4 | 64 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Yellow | 1/2-20 x 7/8 | 1/2-20x7/8 alloy yzn 12 point flange bolt | stock |
|
| NBS | IL | 12 Point Flange Screw (CounterBore) | null | Plain | 1/2-13 x 7/8 | 1/2-13 x 7/8 12 point flange bolt-furnace black (taiwan) | 10000 |
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| SBS | MA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Black | 1/2-20 x 7/8 | 1/2-20x7/8 12-point flange bolt blk zn | 6734 |
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| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 | nc ferry c/s | 50 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 1 | 1/2-20 x 1 12 point cap screw alloy b18.2.1 | 94 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 | 1/2-13 x 1 12 point cap screw alloy b18.2.1 | 36 |
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| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-13 x 1 | 1/2-13x1 gr8 12pt hd flange bolt plain | 125 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-20 x 1 | 1/2-20x1 alloy blk 12 pt flange screws | stock |
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| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 | nc 12 pt fl/b pl | 113 |
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| Endries | WI | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 | 1/2-13x1 alloy stl 170 000 psi 12 point flange screw plain | 150 |
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| Cal Fastenrs | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 1 | - 12-pt fl/b | 50 |
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| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 1 | nf ferry c/s | 7 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 1 | 12 pt countr-bor plain 1/2-20 x 1 (FINE THREAD) | 53 |
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| All Size | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 1 | 1/2-20 x 1 12 point flange bolt alloy plain b18.2.1 | 30 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-13 x 1 | 12 pt flange screw alloy | 100 |
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| UltraFast | WA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Clear | 1/2-13 x 1 | double hex tork zn | inquire |
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| NBS | IL | 12 Point Flange Screw (CounterBore) | null | Plain | 1/2-20 x 1 | 1/2-20 x 1 12 point flange bolt-furnace black (taiwan) | 10000 |
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| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 1/4 | nc ferry c/s | 50 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 1 1/4 | 1/2-20 x 1 1/4 12 point cap screw alloy b18.2.1 | 68 |
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| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-13 x 1 1/4 | 1/2-13x1 1/4 gr8 12pt hd flange bolt plain | 125 |
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| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-20 x 1 1/4 | 1/2-20x1 1/4 gr8 12pt hd flange bolt plain | 25 |
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| B & K FAST | PA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 1/4 | 1/2-13 x 1 1/4 12 pt flange bolts b18.2.1 | 25 |
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| QFC | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2 x 1 1/4 | 1/2x1 1/4nc ferry head cap screw b18.2.1 | 100 |
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| YANKEE | NH | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1.25 | -12-pt flange high strength screw | 72 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Clear | 1/2-20 x 1 1/4 | 1/2-20 x 1 1/4 alloy zn 12 pt flange screws | 114 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-20 x 1 1/4 | 1/2-20x1 1/4 alloy blk 12 pt flange screws | stock |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-20 x 1 1/4 | 1/2-20x1 1/4 alloy blk 12 pt flange screws | stock |
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| THRDFAST | FL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 1/4 | 12 pt counterbore screw b18.2.1 | 1 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 1/4 | 12 pt countr-bor plain 1/2-13 x 1 1/4 | 250 |
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| WSB | KY | 12 Point Flange Screw (CounterBore) | Steel | Phosphate | 1/2-13 x 1 1/4 | q/screw 12pt flange all (po) 1/2-13x1 1/4 b18.2.1 | 865 |
|
| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-13 x 1 1/4 | 12 pt flange screw alloy | 100 |
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| Liberty | IL | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-13 x 1 1/4 | 12-pt hex c/s grade8 grade8 | 350 |
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| THRDFAST | OK | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 1/4 | 12 pt counterbore screw b18.2.1 | 44 |
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| Alma Bolt | MI | 12 Point Flange Screw (CounterBore) | null | Plain | 1/2-13 x 1 1/4 | 1/2-13 x 1 1/4 | 12 point counterbore screw | 24 |
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| Alma Bolt | MI | 12 Point Flange Screw (CounterBore) | null | Plain | 1/2-13 x 1 1/4 | 1/2-13 x 1 1/4 | 12 point counterbore screw | 37 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 1 1/2 | 1/2-20 x 1 1/2 12 point cap screw alloy b18.2.1 | 42 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 1/2 | 1/2-13 x 1 1/2 12 point cap screw alloy b18.2.1 | 110 |
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| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-13 x 1 1/2 | 1/2-13x1 1/2 gr8 12pt hd flange bolt plain | 196 |
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| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-20 x 1 1/2 | 1/2-20x1 1/2 gr8 12pt hd flange bolt plain | 25 |
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| OneMonroe | NC | 12 Point Flange Screw (CounterBore) | ASTM A574 | Plain | 1/2-13 x 1 1/2 | 1/2-13 x 1 1/2 12point capscrew alloy | 26 |
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| QFC | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 1/2 | 1/2-13x1 1/2 ferry head c/s alloy plain b18.2.1 | 800 |
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| R&S Indus | OR | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 1 1/2 | 1/2-20 x 1-1/2 12 pt flange screw alloy steel | 9 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-20 x 1 1/2 | 1/2-20x1 1/2 alloy blk 12 pt flange screws | stock |
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| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 1 1/2 | nf 12 pt fl/b pl | 17 |
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| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 1 1/2 | nf ferry c/s | 15 |
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| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 1/2 | nc ferry c/s | 11 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 1/2 | 12 pt countr-bor plain 1/2-13 x 1 1/2 | 50 |
|
| Delta | TX | 12 Point Flange Screw (CounterBore) | Grade B7 | Plain | 1/2-13 x 1 1/2 | 12 pt cntr-bor b7 grn 1/2-13 x 1 1/2 (XYLAN 1425 GREEN) | 100 |
|
| QFC | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2 x 1 1/2 | 1/2x1 1/2nf ferry hd cap screw b18.2.1 | 122 |
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| Wurth | IN | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 1/2 | 1/2-13 x 1-1/2 countr-bor screw alloy | 28,027 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-13 x 1 1/2 | 12 pt flange screw alloy | 100 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Grade B7 | Plain | 1/2-13 x 1 1/2 | 12 pt countr-bor b7 blue 1/2-13x1 1/2 (XYLAN 1425 BLUE) | 52 |
|
| OneMonroe | MA | 12 Point Flange Screw (CounterBore) | ASTM A574 | Plain | 1/2-13 x 1 1/2 | 1/2-13 x 1 1/2 12point capscrew alloy | 26 |
|
| NBS | IL | 12 Point Flange Screw (CounterBore) | null | Plain | 1/2-20 x 1 1/2 | 1/2-20 x 1-1/2 12 point flange bolt-furnace black (taiwan) | 10000 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 1 3/4 | 1/2-20 x 1 3/4 12 point cap screw alloy b18.2.1 | 70 |
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| WDMB | IA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Clear | 1/2-13 x 1 3/4 | scr 12pt flange st (zn) 1/2-13x1 3/4 (W050) | 836 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-20 x 1 3/4 | 1/2-20x1 3/4 alloy blk 12 pt flange screws | stock |
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| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 3/4 | nc 12 pt fl/b pl | 65 |
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| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 1 3/4 | nf 12 pt fl/b pl | 45 |
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| Cascade | OR | 12 Point Flange Screw (CounterBore) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/2-13 x 1 3/4 | 18-8ss | 1000 |
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| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 1 3/4 | nf ferry c/s | 39 |
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| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 3/4 | nc ferry c/s | 182 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 3/4 | 12 pt countr-bor plain 1/2-13 x 1 3/4 | 152 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Grade B7 | Plain | 1/2-13 x 1 3/4 | 12 pt cntr-bor b7 blue 1/2-13 x 1 3/4 (XYLAN BLUE 1425) | 130 |
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| ISSCO | MO | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 3/4 | 12 point counterbore screw | 300 |
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| Wurth | IN | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 3/4 | 1/2-13 x 1-3/4 countr-bor screw alloy | 36,596 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-13 x 1 3/4 | 12 pt flange screw alloy | 3,597 |
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| Hayes | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 1 3/4 | 1/2-20 x 1 3/4 12 pt. ctrbr screw alloy | 31 |
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| Wurth Ind | D.F. | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Yellow | 1/2-13 x 1 3/4 | 1/2-13 x 1 3/4 12 pt. counterbore screw yz | 398 |
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| Alma Bolt | MI | 12 Point Flange Screw (CounterBore) | null | Plain | 1/2-20 x 1 3/4 | 1/2-20 x 1 3/4 sae | 12 point counterbore screw | 91 |
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| THRDFAST | OK | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 3/4 | 12 pt counterbore screw b18.2.1 | 81 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2 | 1/2-13 x 2 12 point cap screw alloy b18.2.1 | 35 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 2 | 1/2-20 x 2 12 point cap screw alloy b18.2.1 | 10 |
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| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-13 x 2 | 1/2-13x2 gr8 12pt hd flange bolt plain | 150 |
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| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-20 x 2 | 1/2-20x2 gr8 12pt hd flange bolt plain | 25 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-20 x 2 | 1/2-20x2 alloy blk 12 pt flange screws | stock |
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| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 2 | nf 12 pt fl/b pl | 20 |
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| NAPPCO | TX | 12 Point Flange Screw (CounterBore) | Grade B7 | Plain | 1/2-13 x 2 | 1/2-13x2 a193 b7 ext flange c/s 12pt | 50 |
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| Cal Fastenrs | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2 | 12-pt fl/b - 12-pt fl/b | 100 |
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| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 2 | nf ferry c/s | 74 |
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| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2 | ferry c/s | 41 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2 | 12 pt countr-bor plain 1/2-13 x 2 | 90 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Grade B7 | Plain | 1/2-13 x 2 | 12 pt cntr-bor b7 grn 1/2-13 x 2 (XYLAN 1425 GREEN) | 84 |
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| All Size | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2 | 1/2-13 x 2 12 point flange bolt plain b18.2.1 | 33 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-13 x 2 | 12 pt flange screw alloy | 100 |
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| IPC | VA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2 | 1/2-13x2 12 pt. flange screw | 1,220 |
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| Alma Bolt | MI | 12 Point Flange Screw (CounterBore) | null | Plain | 1/2-20 x 2 | 1/2-20 x 2 sae | 12 point counterbore screw | 1 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 2 1/4 | 1/2-20 x 2 1/4 12 point cap screw alloy b18.2.1 | 59 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-20 x 2 1/4 | 1/2-20x2 1/4 alloy blk 12 pt flange screws | stock |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Grade B7 | Plain | 1/2-13 x 2 1/4 | 12 pt countr-bor a193-b7 1/2-13 x 2 1/4 | 50 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Grade B7 | Plain | 1/2-13 x 2 1/4 | 12 pt cntr-bor b7 grn 1/2-13 x 2 1/4 (XYLAN 1425 GREEN) | 63 |
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| WDMB | IA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2 1/4 | screw 12pt flange alloy (pl) 1/2-13x2 1/4 (W020) (W020) (W020) | 7,970 |
|
| WSB | KY | 12 Point Flange Screw (CounterBore) | Steel | Phosphate | 1/2-13 x 2 1/4 | q/screw 12pt flange all (po) 1/2-13x2 1/4 b18.2.1 | 4,600 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-13 x 2 1/4 | 12 pt flange screw alloy | 100 |
|
| NBS | IL | 12 Point Flange Screw (CounterBore) | null | Plain | 1/2-13 x 2 1/4 | 1/2-13 x 2-1/4 12 point flange bolt-furnace black (taiwan) | 10000 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 2 1/2 | 1/2-20 x 2 1/2 inch 12 point cap screw alloy b18.2.1 | 35 |
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| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-13 x 2 1/2 | 1/2-13x2 1/2 gr8 12pt hd flange bolt plain | 100 |
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| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-20 x 2 1/2 | 1/2-20x2 1/2 gr8 12pt hd flange bolt plain | 25 |
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| B & K FAST | PA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2 1/2 | 1/2-13 x 2 1/2 12 pt flange bolts b18.2.1 | 25 |
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| B & K FAST | PA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 2 1/2 | 1/2-20 x 2 1/2 12 pt flange bolts b18.2.1 | 65 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Clear | 1/2-20 x 2 1/2 | 1/2-20 x 2 1/2 alloy zn 12 pt flange screws | 300 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-20 x 2 1/2 | 1/2-20x2 1/2 alloy blk 12 pt flange screws | stock |
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| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2 1/2 | nc 12 pt fl/b pl | 39 |
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| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 2 1/2 | nf 12 pt fl/b pl | 13 |
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| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 2 1/2 | nf ferry c/s | 64 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2 1/2 | 12 pt countr-bor plain 1/2-13 x 2 1/2 | 130 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 2 1/2 | 12 pt countr-bor plain 1/2-20 x 2 1/2 (FINE THREAD) | 56 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Grade B7 | Plain | 1/2-13 x 2 1/2 | 12-pt bolt a193-b7 y-z 1/2-13 x 2 1/2 | 60 |
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| ISSCO | MO | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2 1/2 | 12 point counterbore screw | 134 |
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| WDMB | IA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 2 1/2 | screw 12pt flange all pl 1/2-20x2 1/2 drw | 800 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-13 x 2 1/2 | 12 pt flange screw alloy | 100 |
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| System 22 | PA | 12 Point Flange Screw (CounterBore) | Superalloy (Inconel, Hastelloy, Alloy 20) | Plain | 1/2 x 2 1/2 | inconel 718 | 50 |
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| System 22 | PA | 12 Point Flange Screw (CounterBore) | Superalloy (Inconel, Hastelloy, Alloy 20) | Silver Plated | 1/2-20 x 2 1/2 | inconel 718 | 30 |
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| Revcar | VA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2 1/2 | 12 pt cntrbore screw darling only- with material test reports | 650 |
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| WDMB | IA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2 1/2 | scr 12pt flange alloy (pl) 1/2-13x2 1/2 (W000) (W000) (W000) | 1,121 |
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| Alma Bolt | MI | 12 Point Flange Screw (CounterBore) | null | Plain | 1/2-13 x 2 1/2 | 1/2-13 x 2 1/2 | 12 point counterbore screw | 103 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 2 3/4 | 1/2-20 x 2 3/4 12 point cap screw alloy b18.2.1 | 15 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Yellow | 1/2-20 x 2 3/4 | 1/2-20x2 3/4 alloy yzn 12 point flange bolt | stock |
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| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 2 3/4 | nf 12 pt fl/b pl | 30 |
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| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2 3/4 | nc ferry c/s | 8 |
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| Wurth | IN | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2 3/4 | 1/2-13x2 3/4 counter-bor alloy pack 70 per poly bag | 3,995 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-13 x 2 3/4 | 12 pt flange screw alloy | 100 |
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| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 3 | ferry c/s | 1 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 3 | 1/2-20 x 3 12 point cap screw alloy b18.2.1 | 87 |
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| METRO IND | OH | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 3 | counterbore sae | 15 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-20 x 3 | 1/2-20x3 alloy blk 12 pt flange screws | stock |
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| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 3 | nc 12 pt fl/b pl | 24 |
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| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 3 | nf 12 pt fl/b pl | 24 |
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| CNB | IL | 12 Point Flange Screw (CounterBore) | null | Zinc/Clear | 1/2-13 x 3 | 1/2-13 x 3 12 point cap screw zinc plated | 25 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 3 | 12 pt countr-bor plain 1/2-13 x 3 | 53 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-13 x 3 | 12 pt flange screw alloy | 2,930 |
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| System 22 | PA | 12 Point Flange Screw (CounterBore) | Superalloy (Inconel, Hastelloy, Alloy 20) | Plain | 1/2-20 x 3 | inconel 718 | 11 |
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| System 22 | PA | 12 Point Flange Screw (CounterBore) | Superalloy (Inconel, Hastelloy, Alloy 20) | Plain | 1/2-13 x 3 | inconel 718 | 30 |
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| System 22 | PA | 12 Point Flange Screw (CounterBore) | Superalloy (Inconel, Hastelloy, Alloy 20) | Plain | 1/2 x 3 | inconel 718 | 30 |
|
| Fastener | OH | 12 Point Flange Screw (CounterBore) | ASTM A320 L7, L7M | Zinc/Yellow | 1/2-13 x 3 | 12 point cap screw 1/2-13x3 a320 l7 zinc yellow | 16 |
|
| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 3 1/4 | 1/2-20 x 3 1/4 12 point cap screw alloy b18.2.1 | 60 |
|
| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-20 x 3 1/4 | 1/2-20x3 1/4 alloy blk 12 pt flange screws | stock |
|
| MidStates | MI | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 3 1/4 | 12pt fl/b sc-cntrbore | 17 |
|
| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-13 x 3 1/4 | 12 pt flange screw alloy | 100 |
|
| NBS | IL | 12 Point Flange Screw (CounterBore) | null | Plain | 1/2-20 x 3 1/4 | 1/2-20 x 3-1/4 12 point flange bolt-furnace black (taiwan) | 10000 |
|
| NBS | IL | 12 Point Flange Screw (CounterBore) | null | Plain | 1/2-13 x 3 1/4 | 1/2-13 x 3-1/4 12 point flange bolt-furnace black (taiwan) | 10000 |
|
| GLF | OH | 12 Point Flange Screw (CounterBore) | Superalloy (Inconel, Hastelloy, Alloy 20) | Plain | 1/2-13 x 3 1/4 | 1/2-13 x 3-1/4 12-pt flange bolt 17-4 ph s/s | 75 |
|
| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 3 1/2 | 1/2-20 x 3 1/2 12 point cap screw alloy b18.2.1 | 16 |
|
| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-20 x 3 1/2 | 1/2-20x3 1/2 alloy blk 12 pt flange screws | stock |
|
| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 3 1/2 | nc 12 pt fl/b pl | 99 |
|
| Endries | WI | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 3 1/2 | 1/2-13x3-1/2 alloy stl 170 000 psi 12 point flange screw plain | 160 |
|
| Cal Fastenrs | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 3 1/2 | 12-pt fl/b | 100 |
|
| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 3 1/2 | ferry c/s | 9 |
|
| Wurth | IN | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 3 1/2 | 1/2-13 x 3 1/2 countr-bor screw alloy | 580 |
|
| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-13 x 3 1/2 | 12 pt flange screw alloy | 100 |
|
| IPC | VA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Yellow | 1/2-13 x 3 1/2 | 1/2-13x3 1/2 12 pt. flange screw 150m t.s. steel zinc yellow must be baked and relieved immediately after plating. certs required | 4,421 |
|
| THRDFAST | AL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 3 1/2 | 12 pt counterbore screw b18.2.1 | 266 |
|
| NBS | IL | 12 Point Flange Screw (CounterBore) | null | Plain | 1/2-20 x 3 1/2 | 1/2-20 x 3-1/2 12 point flange bolt-furnace black (taiwan) | 10000 |
|
| Alma Bolt | MI | 12 Point Flange Screw (CounterBore) | null | Plain | 1/2-13 x 3 1/2 | 1/2-13 x 3 1/2 | 12 point counterbore screw | 15 |
|
| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 4 | 1/2-13 x 4 12 point cap screw alloy b18.2.1 | 15 |
|
| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 4 | 1/2-20 x 4 12 point cap screw alloy b18.2.1 | 65 |
|
| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-20 x 4 | 1/2-20x4 alloy blk 12 pt flange screws | stock |
|
| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 4 | nf 12 pt fl/b pl | 1 |
|
| OBRIEN | OH | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 4 | 12pt fl/b | 4 |
|
| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Yellow | 1/2-20 x 4 | 1/2-20x4 alloy yzn 12 pt flange screws | stock |
|
| Wurth | IN | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 4 | 1/2-13x4 countr-bor alloy pack 60 per poly bag | 1,090 |
|
| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-13 x 4 | 12 pt flange screw alloy | 200 |
|
| NBS | IL | 12 Point Flange Screw (CounterBore) | null | Plain | 1/2-13 x 4 1/4 | 1/2-13 x 4-1/4 12 point flange bolt-furnace black (taiwan) | 10000 |
|
| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 4 1/2 | 1/2-20 x 4 1/2 12 point cap screw alloy b18.2.1 | 57 |
|
| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-20 x 4 1/2 | 1/2-20x4 1/2 alloy blk 12 pt flange screws | stock |
|
| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 4 1/2 | 1/2-13x4-1/2 ferry c/s | 23 |
|
| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 4 1/2 | 12 pt countr-bor plain 1/2-13 x 4 1/2 | 71 |
|
| ISSCO | MO | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 4 1/2 | 12 point counterbore screw | 472 |
|
| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Yellow | 1/2-20 x 4 1/2 | 1/2-20 x 4 1/2 alloy yzn 12 pt flange screws | 4,890 |
|
| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 5 | ferry c/s | 5 |
|
| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 5 | 1/2-20 x 5 12 point cap screw alloy b18.2.1 | 21 |
|
| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-20 x 5 | 1/2-20x5 alloy blk 12 pt flange screws | stock |
|
| ISSCO | MO | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 5 | 12 point counterbore screw | 50 |
|
| Hayes | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 5 | 1/2-20 x 5 12 pt. ctrbr screw alloy | 35 |
|
| Alma Bolt | MI | 12 Point Flange Screw (CounterBore) | null | Plain | 1/2-13 x 5 | 1/2-13 x 5 | 12 point counterbore screw | 21 |
|
| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 5 1/2 | 1/2-20 x 5 1/2 inch 12 point cap screw alloy b18.2.1 | 19 |
|
| Endries | WI | 12 Point Flange Screw (CounterBore) | null | Plain | 1/2-13 x 5 1/2 | 1/2-13x5-1/2 alloy stl 170 000 psi 12 point flange screw plain | 1000 |
|
| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 5 1/2 | nc 12 pt fl/b pl | 5 |
|
| CNB | IL | 12 Point Flange Screw (CounterBore) | ASTM A320 L7, L7M | Plain | 1/2-6 x 5 1/2 | 1 1/2-6 x 5 1/2 12 point flange bolt aisi 4140 per astm f2882 plain per print 5.02.034 rev. 009 | 34 |
|
| NBS | IL | 12 Point Flange Screw (CounterBore) | null | Plain | 1/2-20 x 5 1/2 | 1/2-20 x 5-1/2 12 point flange bolt-furnace black (taiwan) | 10000 |
|
| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 6 | 12 pt countr-bor plain 1/2-13 x 6 | 88 |
|
| WSB | KY | 12 Point Flange Screw (CounterBore) | Steel | Phosphate | 1/2-13 x 6 | q/screw 12pt flange all (po) 1/2-13x6 b18.2.1 | 320 |
|
| Wurth | IN | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 6 | 1/2-13 x 6 countr-bor alloy pack 25 per poly bag | 150 |
|
| IPC | VA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 6 | 1/2-20x6 12 pt. flange screw 170m t.s. must meet 170 000 psi tensile strength min. | 11 |
|
| Hayes | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 6 | 1/2-13 x 6 12 pt. ctrbr screw alloy | 15 |
|
| MidStates | MI | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 7 | 12pt fl/b sc-cntrbore | 8 |
|
| WDMB | IA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 7 | scr 12pt flange alloy (pl) 1/2-13x7 (W0I0) | 182 |
|
| WDMB | IA | 12 Point Flange Screw (CounterBore) | Grade 9 | Plain | 1/2-20 x 7.79 | screw 12pt flange gr9 (pl) 1/2-20x7.79 drw (W0S0) (W0S0) | 3,565 |
|
| Wurth | IN | 12 Point Flange Screw (CounterBore) | Grade 9 | Plain | 1/2-20 x 7.79 | 1/2-20 x 7.79 countr-bor per print grd 9 114154-027 | 3,976 |
|
| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2-1/4 nc ferry head c/s plain | 6 |
| |
| R&S Indus | OR | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2 | 1/2-13 x 2 12 pt flange screw alloy steel | 32 |
|
| R&S Indus | OR | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 3 | 1/2-20 x 3 12 pt flange screw alloy steel | 12 |
|
| R&S Indus | OR | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 3 | 1/2-13 x 3 12 pt flange screw alloy steel | 73 |
|
| R&S Indus | OR | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2 1/2 | 1/2-13 x 2-1/2 12 pt flange screw alloy steel | 109 |
|
| R&S Indus | OR | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 2 | 1/2-20 x 2 12 pt flange screw alloy steel (170 000 psi) | 25 |
|
| BHAM | AL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 3/4 | 1/2-13 x 1 3/4 12 pt flangee counterbore bl | | 1166 |
|
| Century | FL | 12 Point Flange Screw (CounterBore) | null | Cadmium | 1/2 | ms21250-04008 bolt | 10 |
|
| American | WI | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 2 1/4 | 1/2-20x2-1/4 nf 12 point flange bolt w/nylon patch | 100 |
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