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3/8-16 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
111 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 | 3/8-16 x 1 | 3/8-16 x 1 zinc 12 point flange screws | stock |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 3/8-16 x 2 3/4 | 3/8-16 x 2 3/4 alloy blk 12 pt flange screws | 100 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 3/8-16 x 2 | 3/8-16 x 2 alloy blk 12 pt flange screws | 200 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 3/8-16 x 7/8 | 3/8-16 x 7/8 alloy blk 12 pt flange screws | 200 |
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| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 3/8-16 x 1 | 3/8-16x1 gr8 12pt hd flange bolt plain | 200 |
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| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 3/8-16 x 1 1/2 | 3/8-16x1 1/2 gr8 12pt hd flange bolt plain | 176 |
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| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 3/8-16 x 1 1/4 | 3/8-16x1 1/4 gr8 12pt hd flange bolt plain | 300 |
|
| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 3/8-16 x 2 | 3/8-16x2 gr8 12pt hd flange bolt plain | 200 |
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| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 2 | nc ferry c/s | 49 |
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| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 3/4 | nc ferry c/s 170m psi 12-pt fl/b finish | 31 |
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| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 1 3/4 | nc ferry c/s | 27 |
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| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 1 1/4 | nc ferry c/s | 100 |
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| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 4 1/2 | nc ferry c/s | 46 |
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| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 1 | nc ferry c/s | 64 |
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| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 1 1/2 | nc ferry c/s | 4 |
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| YANKEE | NH | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 2 1/2 | 3/8-16 x 2-1/2 12 point flange bolt-high tensile strength-alloy steel | 20 |
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| Hayes | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 2 | 3/8-16 x 2 12 pt. ctrbr screw alloy | 22 |
|
| MidStates | MI | 12 Point Flange Screw (CounterBore) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/8-16 x 3/4 | 3/8-16 x 3/4 12pt flange sc-counterbore 18-8 | 50 |
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| MidStates | MI | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 5 | 3/8-16 x 5in 12pt flange sc-counterbore | 48 |
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| MidStates | MI | 12 Point Flange Screw (CounterBore) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/8-16 x 1/2 | 3/8-16 x 1/2 12pt flange sc-counterbore 18-8 | 2 |
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| NBS | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 3/8-16 x 3 1/2 | 3/8-16x3-1/2 12 point flange bolt-furnace black (taiwan) | 10000 |
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| NBS | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 3/8-16 x 3 | 3/8-16x3 12 point flange bolt-furnace black (taiwan) | 10000 |
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| NBS | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 3/8-16 x 4 1/2 | 3/8-16x4-1/2 12 point flange bolt-furnace black (taiwan) | 10000 |
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| NBS | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 3/8-16 x 1 1/2 | 3/8-16x1-1/2 12 point flange bolt-furnace black (taiwan) | 10000 |
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| NBS | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 3/8-16 x 2 3/4 | 3/8-16x2-3/4 12 point flange bolt-furnace black (taiwan) | 10000 |
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| NBS | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 3/8-16 x 2 1/2 | 3/8-16x2-1/2 12 point flange bolt-furnace black (taiwan) | 10000 |
|
| NBS | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 3/8-16 x 5/8 | 3/8-16x5/8 12 point flange bolt-furnace black (taiwan) | 10000 |
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| NBS | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 3/8-16 x 3 1/4 | 3/8-16x3-1/4 12 point flange bolt-furnace black (taiwan) | 10000 |
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| NBS | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 3/8-16 x 7/8 | 3/8-16x7/8 12 point flange bolt-furnace black (taiwan) | 10000 |
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| NBS | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 3/8-16 x 1 1/8 | 3/8-16x1-1/8 12 point flange bolt-furnace black (taiwan) | 10000 |
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| NBS | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 3/8-16 x 5 | 3/8-16x5 12 point flange bolt-furnace black (taiwan) | 10000 |
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| NBS | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 3/8-16 x 4 1/4 | 3/8-16x4-1/4 12 point flange bolt-furnace black (taiwan) | 10000 |
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| NBS | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 3/8-16 x 3/4 | 3/8-16x3/4 12 point flange bolt-furnace black (taiwan) | 10000 |
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| NBS | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 3/8-16 x 1 | 3/8-16x1 12 point flange bolt-furnace black (taiwan) | 10000 |
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| NBS | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 3/8-16 x 4 | 3/8-16x4 12 point flange bolt-furnace black (taiwan) | 10000 |
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| NBS | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 3/8-16 x 1 1/4 | 3/8-16x1-1/4 12 point flange bolt-furnace black (taiwan) | 10000 |
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| NBS | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 3/8-16 x 2 1/4 | 3/8-16x2-1/4 12 point flange bolt-furnace black (taiwan) | 10000 |
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| NBS | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 3/8-16 x 2 | 3/8-16x2 12 point flange bolt-furnace black (taiwan) | 10000 |
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| NBS | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 3/8-16 x 1 3/4 | 3/8-16x1-3/4 12 point flange bolt-furnace black (taiwan) | 10000 |
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| FastWare | Sask | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 1 1/4 | nc 12-pt ferry c/s | 430 |
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| UltraFast | WA | 12 Point Flange Screw (CounterBore) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/8-16 x 2 3/4 | dbl hex torkss | inquire |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 3/8-16 x 2 3/4 | 3/8-16 x 2 3/4 alloy blk 12 pt flange screws | 100 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 3/8-16 x 2 | 3/8-16 x 2 alloy blk 12 pt flange screws | 200 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 3/8-16 x 7/8 | 3/8-16 x 7/8 alloy blk 12 pt flange screws | 200 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 3/8-16 x 3/4 | 3/8-16 x 3/4 alloy blk 12 pt flange screws | 500 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 3/8-16 x 2 1/2 | 3/8-16 x 2 1/2 alloy blk 12 pt flange screws | 200 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 3/8-16 x 1 1/2 | 3/8-16 x 1 1/2 alloy blk 12 pt flange screws | 200 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 3/8-16 x 5/8 | 3/8-16 x 5/8 alloy blk 12 pt flange screws | 200 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 3/8-16 x 2 1/4 | 3/8-16 x 2 1/4 alloy blk 12 pt flange screws | 100 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 3/8-16 x 1 | 3/8-16 x 1 blk 12 point flange screws | 6,250 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 3/8-16 x 1 3/4 | 3/8-16 x 1 3/4 alloy blk 12 pt flange screws | 200 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 3/8-16 x 4 | 3/8-16 x 4 alloy blk 12 pt flange screws | 100 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 3/8-16 x 3 | 3/8-16 x 3 alloy blk 12 pt flange screws | 100 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 3/8-16 x 3 1/4 | 3/8-16 x 3 1/4 alloy blk 12 pt flange screws | 100 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 3/8-16 x 3 1/2 | 3/8-16 x 3 1/2 alloy blk 12 pt flange screws | 100 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Grade 5 | Black Oxide | 3/8-16 x 1 1/4 | 3/8-16 x 1 1/4 gr.5 blk hex flange header bolts | 380 |
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| ACCURATE | IL | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 3/8-16 x 1 3/4 | 12-pt flange scr gr8 counter-bor | 139 |
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| ACCURATE | IL | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 3/8-16 x 1 1/4 | 12-pt flange scr gr8 counter-bor | 435 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 3 | 12 pt countr-bor plain 3/8-16 x 3 | 100 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 2 | 12 pt countr-bor plain 3/8-16 x 2 | 75 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 1 3/4 | 12 pt countr-bor plain 3/8-16 x 1 3/4 | 75 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 2 1/4 | 12 pt countr-bor plain 3/8-16 x 2 1/4 | 102 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 5/8 | 12 pt countr-bor plain 3/8-16 x 5/8 | 1000 |
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| BHAM | AL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 1 | 3/8-16x1 12 pt counterbore bolt b18.2.1 | 50 |
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| Liberty | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 2 | 12 pt fl/b (counterbore bolt) | 400 |
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| Future Fastener | TX | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 3/8-16 x 1 1/2 | 3/8-16 x 1 1/2 ferry head cap screw blk | 14 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 1 | 3/8-16 x 1 12 point cap screw alloy b18.2.1 | 44 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 1 1/2 | 3/8-16 x 1 1/2 12 point cap screw alloy b18.2.1 | 111 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 2 1/4 | 3/8-16 x 2 1/4 12 point cap screw alloy b18.2.1 | 10 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 1 1/4 | 3/8-16 x 1 1/4 12 point cap screw alloy b18.2.1 | 3 |
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| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 3/8-16 x 2 1/2 | 3/8-16x2 1/2 gr8 12pt hd flange bolt plain | 460 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 1 | 3/8-16 x 1 12 point cap screw alloy b18.2.1 | 140 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 2 | 3/8-16 x 2 12 point cap screw alloy b18.2.1 | 56 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 2 1/4 | 3/8-16 x 2 1/4 12 point cap screw alloy b18.2.1 | 50 |
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| SBS | MA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Clear | 3/8-16 x 3/4 | 3/8-16x3/4 12-point flange screw zinc | 11662 |
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| WDMB | IA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 1 1/2 | scr 12pt flange alloy (pl) 3/8-16x1 1/2 (W020) | 9,484 |
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| WDMB | IA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 2 | scr 12pt flange alloy (pl) 3/8-16x2 (W000) | 2,100 |
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| WDMB | IA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 3/8-16 x 6 1/2 | scr 12pt grade 8 (pl) 3/8-16x6 1/2 (W030) (W030) | 888 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Clear | 3/8-16 x 1 | 3/8-16 x 1 zinc 12 point flange screws | stock |
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| IPC | VA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 4 1/4 | 3/8-16x4 1/4 12 pt. flange screw 170m t.s. must meet 170 000 psi tensile strength min. | 40 |
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| IPC | VA | 12 Point Flange Screw (CounterBore) | Steel | Phosphate | 3/8-16 x 1 | 3/8-16x1 12 pt. flange screw gmw-3179h phos & oil must gauge 3a after plating | 791 |
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| IPC | VA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 1 1/2 | 3/8-16x1 1/2 12 pt. flange screw must meet 170 000 psi tensile strength min. | 1,171 |
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| IPC | VA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Yellow | 3/8-16 x 1 1/4 | 3/8-16x1 1/4 12 pt. flange screw 170m t.s. zy must be baked and relieved immediately after plating certs required | 160 |
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| ISSCO | MO | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 2 | 12 point counterbore screw | 185 |
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| ISSCO | MO | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 2 1/2 | 12 point counterbore screw | 133 |
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| ISSCO | MO | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 1 1/4 | 12 point counterbore screw | 500 |
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| ISSCO | MO | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 2 1/4 | 12 point counterbore screw | 205 |
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| ISSCO | MO | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 5 3/8 | 12 point counterbore screw | 73 |
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| ISSCO | MO | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 1 1/2 | 12 point counterbore screw | 220 |
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| Delta Secondary | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 1 1/4 | 690 |
| |
| B & K FAST | PA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 1 3/4 | 3/8-16 x 1 3/4 12 pt flange bolts b18.2.1 | 2 |
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| B & K FAST | PA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 4 3/4 | 3/8-16 x 4 3/4 12 pt flange bolts b18.2.1 | 104 |
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| General F | MI | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 1 | 3/8-16 x 1 12 pt ctbr scr b18.2.1 | 529 |
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| OSSCO | RI | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 3/8-16 x 1 | 3/8-16x1 ferry ctrbore cap screw gr8 b18.2.1 | 13 |
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| BHAM | AL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 1 3/4 | 12 pt counterbore bolt | 41 |
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| BHAM | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 1 1/2 | (12-pt) counterbore | 549 |
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| BoltCraft | NE | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 3 3/4 | 3/8-16 x 3-3/4 high strength 12-point flange head cap screw alloy partial thread 300/ctn | 2,400 |
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| SRF | AL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 5/8 | 12 pt counterbore screw | - |
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| SRF | AL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 5/8 | 12 pt counterbore screw | - |
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| SRF | AL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 1 1/4 | 12 pt counterbore screw | 98 |
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| Wurth Ada | MN | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 3/4 | scr 12pt flange alloy (pl) 3/8-16x3/4 | 300 |
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| THRDFAST | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 1 1/4 | 12 pt counterbore screw b18.2.1 | 204 |
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| Wurth Ind | D.F. | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 1 1/4 | 3/8-16 x 1 1/4 12 pt. counterbore screw | - |
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| All Size | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 2 1/4 | 3/8-16 x 2 1/4 12 point flange bolt plain b18.2.1 | 89 |
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| All Size | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 1 1/4 | 3/8-16 x 1 1/4 12 point flange bolt plain b18.2.1 | 50 |
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| All Size | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 4 | 3/8-16 x 4 12 point flange bolt plain b18.2.1 | 82 |
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| All Size | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 4 1/2 | 3/8-16 x 4-1/2 12 point flange bolt plain b18.2.1 | 331 |
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| All Size | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 2 | 3/8-16 x 2 12 point flange bolt b18.2.1 | 54 |
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| FACCA | Ont | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Clear | 3/8-16 x 3 1/2 | 12 point flanged countr-bor screw 3/8-16 unc-3a x 3 1/2 lg medium carbon alloy steel quenched & tempered not plated ifi 115-1986 b18.2.1 | 400 |
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| Wurth | IN | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 1 3/4 | 3/8-16x1 3/4 counter-bor alloy | 20,131 |
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| Wurth | IN | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 1 | 3/8-16 x 1 countr-bor screw alloy | 16,600 |
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| Wurth | IN | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 1 1/2 | 3/8-16 x 1-1/2 countr-bor screw alloy | 12,009 |
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| Wurth | IN | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 4 1/4 | 3/8-16 x 4-1/4 countr-bor alloy pack 150 per poly bag | 650 |
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| Wurth | IN | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 3 1/2 | 3/8-16 x 3-1/2 countr-bor alloy pack 90 per poly bag | 405 |
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| FMP | MA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 3/8-16 x 1 | 12-point external wrenching bolt | 100 |
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