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1/4 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
104 results, (click on any line for more information)
| 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 | 1/4-28 x 1/2 | 1/4-28 x 1/2 alloy zinc 12 point flange bolts | stock |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/4-20 x 1 1/4 | 12 pt flange screw alloy | 350 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/4-20 x 1/2 | 12 pt flange screw alloy | 1,000 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/4-20 x 5/8 | 12 pt flange screw alloy | 500 |
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| Cal Fastenrs | CA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Clear | 1/4-20 x 3/8 | 1/4-20 x 3/8 12-point flange bolt alloy trivalent zinc 12-point flange bolt | 50 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 1/2 | 1/4-20 x 1/2 12 point cap screw alloy b18.2.1 | 50 |
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| Cal Fastenrs | CA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Clear | 1/4-20 x 1/2 | 1/4-20 x 1/2 12-point fl/b Cr3+ 12-point fl/b | 1,500 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Clear | 1/4-28 x 1/2 | 1/4-28 x 1/2 alloy zinc 12 point flange bolts | stock |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Clear | 1/4-20 x 1/2 | 12 pt countr-bor zinc 1/4-20 x 1/2 | 200 |
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| Wurth | IN | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 1/2 | 1/4-20x1/2 countr-bor alloy pack 450 per poly bag | 8,900 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/4-20 x 1/2 | 12 pt flange screw alloy | 1,000 |
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| Liberty | IL | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/4-28 x 1/2 | 12pt bolt gr8 | 1 |
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| Hayes | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 1/2 | 1/4-20 x 1/2 12 pt. ctrbr screw alloy | 100 |
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| MidStates | MI | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 5/8 | 12pt flange sc-cntrbore ejot | 50 |
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| MidStates | MI | 12 Point Flange Screw (CounterBore) | Steel | Chrome Plated | 1/4-20 x 5/8 | 12pt chrome ejot | 17 |
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| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 5/8 | nc ferry c/s | 73 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/4-20 x 5/8 | 12 pt flange screw alloy | 500 |
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| Hayes | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 5/8 | 1/4-20 x 5/8 12 pt. ctrbr screw alloy | 18 |
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| Wurth Ind | IN | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 5/8 | scr 12pt flange alloy pl 1/4-20x5/8 steel plain | 5916 |
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| WINA | MN | 12 Point Flange Screw (CounterBore) | Aluminum | Plain | 1/4-20 x 5/8 | scr 12pt flange alloy pl 1/4-20x5/8 | 5916 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 3/4 | 1/4-20 x 3/4 12 point cap screw alloy b18.2.1 | 75 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-28 x 3/4 | 1/4-28 x 3/4 12 point cap screw alloy b18.2.1 | 20 |
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| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 3/4 | nc 12 pt fl/b pl | 10 |
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| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-28 x 3/4 | nf 12 pt fl/b pl | 32 |
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| OBRIEN | OH | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-28 x 3/4 | 12 pt fl/b | 93 |
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| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-28 x 3/4 | nf ferry c/s | 95 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 3/4 | 12 pt countr-bor plain 1/4-20 x 3/4 | 190 |
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| Alma Bolt | MI | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-28 x 3/4 | SAE 12-pt counterbore screw | 46 |
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| Alma Bolt | MI | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 3/4 | 12-pt counterbore screw | 88 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/4-20 x 3/4 | 12 pt flange screw alloy | 1,000 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/4-28 x 3/4 | 1/4-28 x 3/4 alloy blk 12 pt flange screws | 428 |
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| AIH | AZ | 12 Point Flange Screw (CounterBore) | Superalloy (Inconel, Hastelloy, Alloy 20) | Plain | 1/4-28 x 3/4 | 1/4-28x.750 l bolt 12 point a286 | 1 |
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| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/4-28 x 7/8 | 1/4-28x7/8 gr8 12pt hd flange bolt plain | 50 |
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| R&S Indus | OR | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 7/8 | 1/4-20 x 7/8 12 pt flange screw alloy steel | 398 |
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| THRDFAST | OK | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 7/8 | 12 pt counterbore screw b18.2.1 | 25 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/4-20 x 7/8 | 12 pt flange screw alloy | 2,300 |
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| MidStates | MI | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 7/8 | 1/4-20 x 7/8 12-pt screw-chrome | 3 |
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| Endries | WI | 12 Point Flange Screw (CounterBore) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-28x7/8 302 stainless steel 12pt flange screw plain | | 25 |
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| Century | NY | 12 Point Flange Screw (CounterBore) | Steel | Cadmium | 1/4-28 x 7/8 | ms9915-12 | 9739 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 1 | 1/4-20 x 1 12 point cap screw alloy b18.2.1 | 49 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-28 x 1 | 1/4-28 x 1 12 point cap screw alloy | 100 |
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| R&S Indus | OR | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 1 | 1/4-20 x 1 12 pt flange screw alloy steel | 5 |
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| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 1 | nc 12 pt fl/b pl | 110 |
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| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-28 x 1 | nf 12 pt fl/b pl | 63 |
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| GUIDON | NJ | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/4-20 x 1 | 500 |
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| MidStates | MI | 12 Point Flange Screw (CounterBore) | Steel | Chrome Plated | 1/4-20 x 1 | 12-pt -chrome ejot | 14 |
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| Future Fastener | TX | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/4-20 x 1 | 1/4-20 x 1 ferry hd c/s blk | 1524 |
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| ISSCO | MO | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-28 x 1 | 12 point counterbore screw | 2951 |
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| Wurth | IN | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 1 | 1/4-20 x 1 countr-bor alloy | 3,675 |
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| Alma Bolt | MI | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-28 x 1 | SAE 12-pt counterbore screw | 100 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/4-20 x 1 | 12 pt flange screw alloy | 500 |
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| Alma Bolt | MI | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 1 | 12-pt counterbore screw | 100 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 1 1/4 | 1/4-20 x 1 1/4 12 point cap screw alloy b18.2.1 | 100 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 1 1/4 | 1/4-20 x 1 1/4 12 point cap screw alloy b18.2.1 | 25 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-28 x 1 1/4 | 1/4-28 x 1 1/4 12 point cap screw alloy b18.2.1 | 125 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-28 x 1 1/4 | 1/4-28 x 1 1/4 12 point cap screw alloy b18.2.1 | 100 |
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| R&S Indus | OR | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 1 1/4 | 1/4-20 x 1-1/4 12 pt flange screw alloy steel | 35 |
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| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 1 1/4 | nc 12 pt fl/b pl | 89 |
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| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-28 x 1 1/4 | nf 12 pt fl/b pl | 96 |
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| OBRIEN | OH | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-28 x 1 1/4 | 12 pt fl/b | 46 |
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| MidStates | MI | 12 Point Flange Screw (CounterBore) | Steel | Chrome Plated | 1/4-20 x 1 1/4 | 12-pt -chrome ejot | 15 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 1 1/4 | 12 pt countr-bor plain 1/4-20 x 1 1/4 | 110 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/4-20 x 1 1/4 | 12 pt flange screw alloy | 350 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 1 1/2 | 1/4-20 x 1 1/2 12 point cap screw alloy b18.2.1 | 25 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 1 1/2 | 1/4-20 x 1 1/2 12 point cap screw alloy b18.2.1 | 50 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-28 x 1 1/2 | 1/4-28 x 1 1/2 12 point cap screw alloy b18.2.1 | 65 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-28 x 1 1/2 | 1/4-28 x 1 1/2 12 point cap screw alloy b18.2.1 | 25 |
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| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 1 1/2 | nc 12 pt fl/b pl | 49 |
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| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-28 x 1 1/2 | nf 12 pt fl/b pl | 75 |
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| SRF | AL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-28 x 1 1/2 | 12 pt counterbore screw | 75 |
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| MidStates | MI | 12 Point Flange Screw (CounterBore) | Steel | Chrome Plated | 1/4-20 x 1 1/2 | 12-pt -chrome ejot | 11 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 1 1/2 | 12 pt countr-bor plain 1/4-20 x 1 1/2 | 235 |
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| ISSCO | MO | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 1 1/2 | 12 point counterbore screw | 487 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/4-20 x 1 1/2 | 12 pt flange screw alloy | 560 |
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| Hayes | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-28 x 1 1/2 | 1/4-28 x 1 1/2 12 pt. ctrbr screw alloy | 2 |
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| Endries | WI | 12 Point Flange Screw (CounterBore) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-28 x 1 1/2 | 1/4-28 x 1-1/2 flange 12 point screw stainless 18-8 | 51 |
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| Alma Bolt | MI | 12 Point Flange Screw (CounterBore) | null | Plain | 1/4-28 x 1 1/2 | 1/4-28 x 1 1/2 | 12 point counterbore screw | 96 |
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| Olander | CA | 12 Point Flange Screw (CounterBore) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-28 x 1 1/2 12-pt bolt sst rohs si | 2 |
| |
| Alma Bolt | MI | 12 Point Flange Screw (CounterBore) | null | Plain | 1/4-20 x 1 1/2 | 1/4-20 x 1 1/2 | 12 point counterbore screw | 68 |
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| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-28 x 1 1/2 | nf ferry c/s | 64 |
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| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 1 3/4 | nc 12 pt fl/b pl | 100 |
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| MidStates | MI | 12 Point Flange Screw (CounterBore) | Steel | Chrome Plated | 1/4-20 x 1 3/4 | 12-pt -chrome ejot | 14 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/4-20 x 1 3/4 | 12 pt flange screw alloy | 500 |
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| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 2 | nc 12 pt fl/b pl | 50 |
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| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-28 x 2 | nf 12 pt fl/b pl | 71 |
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| MidStates | MI | 12 Point Flange Screw (CounterBore) | Steel | Chrome Plated | 1/4-20 x 2 | 12-pt -chrome ejot | 10 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/4-20 x 2 | 12 pt flange screw alloy | 500 |
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| MidStates | MI | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-28 x 2 | 1/4-28 x 2 12pt flange sc-counterbore | 87 |
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| MidStates | MI | 12 Point Flange Screw (CounterBore) | Steel | Chrome Plated | 1/4-20 x 2 1/4 | 12-pt -chrome ejot | 19 |
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| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 2 1/2 | nc 12 pt fl/b pl | 99 |
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| MidStates | MI | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 2 1/2 | 12pt fl/b counterbore | 47 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 2 1/2 | 12 pt countr-bor plain 1/4-20 x 2 1/2 | 105 |
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| All Size | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 2 1/2 | 1/4-20 x 2-1/2 12 point flange bolt plain b18.2.1 | 149 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Clear | 1/4-20 x 3 | 12 pt countr-bor zinc 1/4-20 x 3 | 600 |
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| MidStates | MI | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-28 x 3 | 1/4-28 x 3 12pt flange sc-counterbore | 90 |
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| AIH | AZ | 12 Point Flange Screw (CounterBore) | Steel | Cadmium | 1/4 x 3.637 | 1/4x3.637 12 pt bolt alloy steel cad plate | 72 |
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| CNB | IL | 12 Point Flange Screw (CounterBore) | null | Plain | 1/4-12 x 5 1/2 | 1 1/4-12 x 5 1/2 12 point flange screw plain-general electric part-all heat treatment shall be in compliance w/ams 2750d or latest rev-per print | 2 |
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| CNB | IL | 12 Point Flange Screw (CounterBore) | null | Plain | 1/4-7 x 6 | 1 1/4-7 x 6 12 point flange ferry cap screw alloy plain per e13811949 standard partial thread | 8 |
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| CNB | IL | 12 Point Flange Screw (CounterBore) | null | Plain | 1/4-12 x 7 1/2 | 1 1/4-12 x 7 1/2 12 point flange screw 4140 per astm f2882 plain per print 5.02.034 rev. 009 | 3111 |
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| MFS | KS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 31/4 | 12-pt bolt | 14 |
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| CNB | IL | 12 Point Flange Screw (CounterBore) | Class 9.8 | Plain | 1/4-12 x 8 1/2 | 1 1/4-12 x 8 1/2 12 point flange screw class 9 plain per print wa5691 | 3 |
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| B & K FAST | PA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4 | 1/4 counterbore # csc55655 b18.2.1 | 1 |
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| R&S Indus | OR | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 2 | 1/4-20 x 2 12 pt flange screw alloy steel | 96 |
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| R&S Indus | OR | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 1 3/4 | 1/4-20 x 1-3/4 12 pt flange screw alloy steel | 97 |
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| Endries | WI | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4-20 x 5/8 | 1/4-20x5/8 alloy stl 170 000 psi 12 point flange screw plain | 250 |
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| Wurth | IN | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/4 | 1/4 pilot 5/32 shank counterbore | 15 |
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| National | Ont | 12 Point Flange Screw (CounterBore) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 2 1/4 | 1/4-20x2-1/4 12pt flange countr-bor sscre | 197 |
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| Century | FL | 12 Point Flange Screw (CounterBore) | Brass | Zinc/Clear | 1/4-20 | eaton 815-601-3 1/4-20 hex m/s nut brass double chamfered plated per 50-606-2a | 100 |
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