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3 1/2 inch length 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
64 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 | Black Oxide | 1/2-20 x 3 1/2 | 1/2-20x3 1/2 alloy blk 12 pt flange screws | stock |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 3/8-16 x 3 1/2 | 12 pt flange screw alloy | 100 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 7/16-14 x 3 1/2 | 12 pt flange screw alloy | 100 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-13 x 3 1/2 | 12 pt flange screw alloy | 100 |
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| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 3/4-16 x 3 1/2 | 3/4-16x3 1/2 gr8 12pt hd flange bolt plain | 10 |
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| Future Fastener | TX | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 5/8-11 x 3 1/2 | 5/8-11 x 3 1/2 (12pt) 4140 ferry cap blk | 40 |
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| Future Fastener | TX | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 3/4-16 x 3 1/2 | 3/4-16 x 3 1/2 ferry head cap screw blk | 18 |
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| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8 x 3 1/2 | nc ferry c/s | 30 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-24 x 3 1/2 | 3/8-24 x 3 1/2 12 point cap screw alloy b18.2.1 | 40 |
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| 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 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-18 x 3 1/2 | 5/8-18 x 3 1/2 12 point cap screw alloy b18.2.1 | 15 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/4-10 x 3 1/2 | 3/4-10 x 3 1/2 12 point cap screw alloy b18.2.1 | 20 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/4-16 x 3 1/2 | 3/4-16 x 3 1/2 12 point cap screw alloy b18.2.1 | 12 |
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| GLF | OH | 12 Point Flange Screw (CounterBore) | Superalloy (Inconel, Hastelloy, Alloy 20) | Plain | 1-14 x 3 1/2 | 1-14x3-1/2 12-pt flange bolt 17-4 ph s/s b18.2.1 () () () | 2 |
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| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 5/8-18 x 3 1/2 | 5/8-18x3 1/2 gr8 12pt hd flange bolt plain | 24 |
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| Century | FL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/4-16 x 3 1/2 | 3/4-16 x 3 1/2 12 point flange screw (3/4-16 x 3 1/2 12 POINT FLANGE SCREW PER IE2360 PLAIN) (3/4-16 x 3 1/2 12 POINT FLANGE SCREW PER IE2360 PLAIN) | 2649 |
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| Hayes | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/16-18 x 3 1/2 | 5/16-18 x 3 1/2 12 pt. ctrbr screw alloy | 26 |
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| BHAM | AL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/4-10 x 3 1/2 | 3/4-10x3-1/2 12 point counterbore bolt b18.2.1 | 20 |
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| Cal Fastenrs | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 3 1/2 | 12-pt fl/b | 100 |
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| CIF | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1-8 x 3 1/2 | 1-8x3 1/2 12 point flange bolt alloy plain (20) (20) (20) () | 20 |
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| CIF | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/4-16 x 3 1/2 | 3/4-16x3 1/2 12 point flange bolt alloy plain (2894) () | 2894 |
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| CIF | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 7/16-14 x 3 1/2 12 point flange bolt alloy steel plain | | 25 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 3 1/2 | coarse 12-point fl/b b18.2.1 | 10 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-18 x 3 1/2 | 5/8-18x3 1/2 fine 12-point flange screw alloy pln b18.2.1 | 10 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 3 1/2 | 1/2-20x3 1/2 fine 12-point flange screw alloy pln | 25 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 7/16-20 x 3 1/2 | 7/16-20x3 1/2 fine 12-point flange screw alloy pln b18.2.1 | 10 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/16-18 x 3 1/2 | 5/16-18x3 1/2 coarse 12-point flange screw alloy pln unc | 34 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-24 x 3 1/2 | fine 12-point fl/b | 28 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 3 1/2 | coarse 12-point fl/b | 35 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/16-24 x 3 1/2 | 5/16-24x3 1/2 fine 12-point flange screw alloy pln b18.2.1 | 20 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 3 1/2 | 5/8-11x3 1/2 coarse 12-point flange screw alloy pln b18.2.1 | 18 |
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| 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 |
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| Set Screw | IL | 12 Point Flange Screw (CounterBore) | Grade B7 | Nickel | 5/8-11 x 3 1/2 | 12-pt fl/b astma193 b7 material plate & bake per print | inquire |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 3/8-16 x 3 1/2 | 12 pt flange screw alloy | 100 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 7/16-14 x 3 1/2 | 12 pt flange screw alloy | 100 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-13 x 3 1/2 | 12 pt flange screw alloy | 100 |
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| Century | NY | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/4-16 x 3 1/2 12 point flange screw 3/4-16 x 3 1/2 12 point flange screw per ie2360 plain | 2649 |
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| Liberty | IL | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 7/16-20 x 3 1/2 | 12pt h/b | 15 |
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| MidStates | MI | 12 Point Flange Screw (CounterBore) | Steel | Plain | 7/16-14 x 3 1/2 | 12pt flangescrew-countrbore | 42 |
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| WDMB | IA | 12 Point Flange Screw (CounterBore) | Steel | Plain | x 3 1/2 | scr 12pt flange all pl 3/4-16x3 1/2 (W000) (W000) | 347 |
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| 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 |
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| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Yellow | 9/16-18 x 3 1/2 | 9/16-18 x 3 1/2 alloy 170psi 12 point flange bolts yellow zinc 8u hrc 38-43 | 3,810 |
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| IPC | VA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-24 x 3 1/2 | 3/8-24x3 1/2 12 pt. flange screw 170m t.s. must meet 170 000 psi tensile strength min. | 33 |
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| 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 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 3 1/2 | 12 pt countr-bor plain 5/8-11 x 3 1/2 | 59 |
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| ISSCO | MO | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/4-10 x 3 1/2 | 12 point counterbore screw | 1595 |
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| General F | MI | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-18 x 3 1/2 | 5/8-18x3.5 ctbr scr q-29 patch roc std b-104p 5-18-95 | 1,000 |
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| QFC | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1-8 x 3 1/2 | 1-8x3-1/2 ferry hd cap screw b18.2.1 | 36 |
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| Bostwick | IN | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 3 1/2 | 1/2-13 x 3 1/2 12 pt. counterbore screw alloy b18.2.1 | 14 |
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| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 3 1/2 | ferry c/s | 9 |
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| CNB | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/8-16 x 3 1/2 | 12-pt c/s per dwg # 40221580 | 20234 |
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| THRDFAST | AL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 3 1/2 | 12 pt counterbore screw b18.2.1 | 266 |
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| THRDFAST | AL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/4-10 x 3 1/2 | 12 pt counterbore screw b18.2.1 | 30 |
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| WSB | KY | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/4-10 x 3 1/2 | screw countrbr 12pt all 3/4-10x3 1/2 b18.2.1 | 712 |
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| Revcar | VA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 3 1/2 | 12 pt cntrbore screw darling only- with material test reports | 995 |
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| All Size | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/4-16 x 3 1/2 | 3/4-16 x 3 1/2 12 point flange bolt plain b18.2.1 | 34 |
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| All Size | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 3 1/2 | 5/8-11 x 3-1/2 12 point flange bolt plain b18.2.1 | 23 |
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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 | 1/2-13 x 3 1/2 | 1/2-13 x 3 1/2 countr-bor screw alloy | 580 |
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| Wurth | IN | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/4-10 x 3 1/2 | 3/4-10 x 3 1/2 countr-bor screw alloy pack 25 per poly bag | 150 |
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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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| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/4-10 x 3 1/2 | nc 12 pt fl/b pl | 30 |
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| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 3 1/2 | nc 12 pt fl/b pl | 23 |
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| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 3 1/2 | nc 12 pt fl/b pl | 99 |
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| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1-8 x 3 1/2 | nc 12 pt fl/b pl | 4 |
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| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 7/16-20 x 3 1/2 | nf 12 pt fl/b pl | 25 |
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| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 3/4-16 x 3 1/2 | nf 12 pt fl/b pl | 15 |
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| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-18 x 3 1/2 | nf 12 pt fl/b pl | 1 |
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