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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 ANSI Standard B18.2.1
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| Supplier | Loc | Type | Material | Finish | Size | Description | Qty |
|---|---|---|---|---|---|---|---|
| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-13 x 1 | 12 pt flange screw alloy | 100 |
| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-13 x 1 1/4 | 12 pt flange screw alloy | 100 |
| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-13 x 1 1/2 | 12 pt flange screw alloy | 100 |
| Search results presented by Metric Threaded Products, Inc., your source for 12 Point Flange Screws. For more results, visit www.metric-threaded.com | |||||||
| Supplier | Loc | Type | Material | Finish | Size | Description | Qty |
| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-13 x 1 3/4 | 12 pt flange screw alloy | 8,097 |
| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-13 x 2 | 12 pt flange screw alloy | 100 |
| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-13 x 2 1/4 | 12 pt flange screw alloy | 100 |
| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-13 x 2 1/2 | 12 pt flange screw alloy | 100 |
| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-13 x 2 3/4 | 12 pt flange screw alloy | 100 |
| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-13 x 3 | 12 pt flange screw alloy | 100 |
| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-13 x 3 1/4 | 12 pt flange screw alloy | 100 |
| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-13 x 3 1/2 | 12 pt flange screw alloy | 100 |
| MTP | CA | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 1/2-13 x 4 | 12 pt flange screw alloy | 100 |
| 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 |
| EFSCO | OR | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-13 x 3/4 | 1/2-13 x 3/4 nc 12 point flange bolt grade 8 alloy plain. | 81 |
| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 | nc ferry c/s | 50 |
| 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 | 25 |
| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 | nc 12 pt fl/b pl | 113 |
| 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 | 25 |
| Cal Fastenrs | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 1 | - 12-pt fl/b | 50 |
| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 1 | nf ferry c/s | 15 |
| 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 |
| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 | coarse 12-point fl/b | 160 |
| EFSCO | OR | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-13 x 1 | 1/2-13 x 1 nc 12 point flange bolt grade 8 alloy plain. | 419 |
| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-13 x 1 | gr8 12pt hd fl/b | 460 |
| EFSCO | OR | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-20 x 1 | nf 12-pt fl/b . | 45 |
| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 1/4 | nc ferry c/s | 50 |
| YANKEE | NH | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1.25 | -12-pt flange high strength screw | 72 |
| THRDFAST | FL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 1/4 | 12 pt counterbore screw b18.2.1 | 1 |
| 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 |
| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 1/4 | coarse 12-point fl/b | 95 |
| 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 |
| Komar | AR | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 1/4 | 12 pt.counterbore scr | 200 |
| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 1 1/4 | fine 12-point fl/b b18.2.1 | 21 |
| Trinity | IA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Clear | 1/2-13 x 1 1/4 | 1/2 - 13 x 1 1/4 12 point flange screw 170m psi tensile znpo | 459 |
| Hodell | OH | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 1/4 | 12pt 170m psi counterbore | 3,000 |
| THRDFAST | OK | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 1/4 | 12 pt counterbore screw b18.2.1 | 44 |
| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-13 x 1 1/4 | gr8 12pt hd fl/b | 450 |
| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-20 x 1 1/4 | gr8 12pt hd fl/b | 50 |
| 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 | 125 |
| 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 | 40 |
| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 1 1/2 | nf 12 pt fl/b pl | 17 |
| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 1 1/2 | nf ferry c/s | 15 |
| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 1/2 | nc ferry c/s | 196 |
| 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 |
| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 1/2 | coarse 12-point fl/b | 74 |
| Optimas | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 1/2 | 1/2-13 x 1 1/2 12-point ferry head c/s | 50 |
| Optimas | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 1/2 | 1/2-13 x 1 1/2 12-point c/s | 50 |
| Trinity | IA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Clear | 1/2-13 x 1 1/2 | 1/2 - 13 x 1 1/2 12 point flange screw 170m psi tensile znpo | 124 |
| Optimas | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 1/2 | 1/2-13 x 1 1/2 12-point c/s | 50 |
| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-13 x 1 1/2 | gr8 12pt hd fl/b | 336 |
| THRDFAST | OK | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 1/2 | 12 pt counterbore screw b18.2.1 | 310 |
| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-20 x 1 1/2 | gr8 12pt hd fl/b | 50 |
| THRDFAST | AL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 1/2 | 12 pt counterbore screw b18.2.1 | 19 |
| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 1 3/4 | fine 12-point fl/b b18.2.1 | 195 |
| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 3/4 | nc 12 pt fl/b pl | 65 |
| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 1 3/4 | nf 12 pt fl/b pl | 45 |
| 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 |
| AFP | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 1 3/4 | 12point counterbore bolt | 202 |
| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 1 3/4 | nf ferry c/s | 42 |
| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 3/4 | nc ferry c/s | 100 |
| ISSCO | MO | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 3/4 | 12 point counterbore screw | 300 |
| 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 |
| R&S | OR | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 3/4 | 1/2-13 x 1-3/4 12 pt flange screw | 50 |
| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 1 3/4 | 12 pt countr-bor plain 1/2-20 x 1 3/4 | 120 |
| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 1 3/4 | counter bor bolt ferry | 120 |
| 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 |
| THRDFAST | OK | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 1 3/4 | 12 pt counterbore screw b18.2.1 | 81 |
| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 1 3/4 | 12 pt countr-bor 1/2-20x1 3/4 | 120 |
| 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 | 25 |
| 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 | 5 |
| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 2 | nf 12 pt fl/b pl | 20 |
| 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 | 100 |
| EFSCO | OR | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-13 x 2 | 1/2-13 x 2 nc 12 point flange bolt grade 8 alloy plain. | 56 |
| Cal Fastenrs | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2 | 12-pt fl/b - 12-pt fl/b | 100 |
| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 2 | nf ferry c/s | 27 |
| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2 | ferry c/s | 42 |
| 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 |
| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2 | coarse 12-point fl/b | 31 |
| R&S | OR | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2 | 1/2-13 x 2 12 pt flange screw alloy | 32 |
| GLF | OH | 12 Point Flange Screw (CounterBore) | Superalloy (Inconel, Hastelloy, Alloy 20) | Plain | 1/2-13 x 2 | 12-pt flg bolt 17-4 ph s/s | 100 |
| EFSCO | OR | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-20 x 2 | 1/2-20 x 2 nf 12 point flange bolt grade 8 alloy plain. | 43 |
| Trinity | IA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Clear | 1/2-13 x 2 | 1/2 - 13 x 2 12 point flange screw 170m psi tensile znpo | 121 |
| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-20 x 2 | gr8 12pt hd fl/b | 48 |
| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-13 x 2 | gr8 12pt hd fl/b | 254 |
| 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 |
| R&S | OR | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2 1/4 | 1/2-13 x 2-1/4 12 pt flange screw | 76 |
| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2 1/4 | coarse 12-point fl/b | 9 |
| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2 1/2 | nc 12 pt fl/b pl | 39 |
| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 2 1/2 | nf 12 pt fl/b pl | 13 |
| EFSCO | OR | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-13 x 2 1/2 | 1/2-13 x 2 1/2 nc 12 point flange bolt grade 8 alloy plain. | 91 |
| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 2 1/2 | nf ferry c/s | 64 |
| ISSCO | MO | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2 1/2 | 12 point counterbore screw | 134 |
| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 2 1/2 | fine 12-point fl/b | 40 |
| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2 1/2 | coarse 12-point fl/b | 6 |
| R&S | 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 | 19 |
| System 22 | PA | 12 Point Flange Screw (CounterBore) | Superalloy (Inconel, Hastelloy, Alloy 20) | Plain | 1/2 x 2 1/2 | inconel 718 | 50 |
| System 22 | PA | 12 Point Flange Screw (CounterBore) | Superalloy (Inconel, Hastelloy, Alloy 20) | Silver | 1/2-20 x 2 1/2 | inconel 718 | 30 |
| 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 |
| Spring Bo | TX | 12 Point Flange Screw (CounterBore) | Grade B7M | Plain | 1/2-20 x 2 1/2 | 1/2(20-nf) x 2-1/2 flange screw 12 point b7m b18.2.1 b18.2.1 usa | inquire |
| Spring Bo | TX | 12 Point Flange Screw (CounterBore) | Grade B7M | Plain | 1/2-20 x 2 1/2 | 1/2(20-nf) x 2-1/2 flange screw 12 point b7m b18.2.1 usa | inquire |
| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-20 x 2 1/2 | gr8 12pt hd fl/b | 50 |
| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-13 x 2 1/2 | gr8 12pt hd fl/b | 257 |
| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 2 3/4 | nf 12 pt fl/b pl | 30 |
| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2 3/4 | nc ferry c/s | 90 |
| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 2 3/4 | fine 12-point fl/b | 165 |
| 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 |
| GLF | OH | 12 Point Flange Screw (CounterBore) | Superalloy (Inconel, Hastelloy, Alloy 20) | Plain | 1/2-20 x 2 3/4 | 12-pt flg bolt 17-4 ph s/s | 100 |
| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 2 3/4 | coarse 12-point fl/b | 51 |
| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 3 | ferry c/s | 1 |
| CIF | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2 x 3 | 12-pt fl/b blank, 5/8 oversized body, 4140, 36-40 rc, 160-190 ksi | 25 |
| METRO IND | OH | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 3 | counterbore sae | 15 |
| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 3 | nc 12 pt fl/b pl | 24 |
| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 3 | nf 12 pt fl/b pl | 24 |
| R&S | OR | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 3 | 1/2-20 x 3 12 pt flange screw alloy | 12 |
| R&S | OR | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 3 | 1/2-13 x 3 12 pt flange screw alloy | 73 |
| System 22 | PA | 12 Point Flange Screw (CounterBore) | Superalloy (Inconel, Hastelloy, Alloy 20) | Plain | 1/2-20 x 3 | inconel 718 | 11 |
| System 22 | PA | 12 Point Flange Screw (CounterBore) | Superalloy (Inconel, Hastelloy, Alloy 20) | Plain | 1/2-13 x 3 | inconel 718 | 30 |
| System 22 | PA | 12 Point Flange Screw (CounterBore) | Superalloy (Inconel, Hastelloy, Alloy 20) | Plain | 1/2 x 3 | inconel 718 | 30 |
| EFSCO | OR | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-20 x 3 | 1/2-20 x 3 nf 12 point flange bolt grade 8 alloy plain. | 13 |
| EFSCO | OR | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-13 x 3 | nc 12-pt fl/b . | 76 |
| THRDFAST | AL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 3 | 12 pt counterbore screw b18.2.1 | 198 |
| Alma Bolt | MI | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 3 | 1/2-13 x 3 12 point counterbore screw | 1946 |
| MidStates | MI | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 3 1/4 | 12pt fl/b sc-cntrbore | 17 |
| Trinity | IA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 3 1/4 | 1/2 - 13 x 3 1/4 12 point flange screw 170m psi tensile plain | 37 |
| 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 | 15 |
| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 3 1/2 | nc 12 pt fl/b pl | 99 |
| 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 |
| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 3 1/2 | coarse 12-point fl/b | 40 |
| Trinity | IA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Clear | 1/2-13 x 3 1/2 | 1/2 - 13 x 3 1/2 12 point flange screw 170m psi tensile znpo | 72 |
| Trinity | IA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 3 1/2 | 1/2 - 13 x 3 1/2 12 point flange screw 170m psi tensile plain | 93 |
| THRDFAST | AL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 3 1/2 | 12 pt counterbore screw b18.2.1 | 266 |
| Spring Bo | TX | 12 Point Flange Screw (CounterBore) | Grade B8M | Plain | 1/2-13 x 3 3/4 | 1/2(13-3a) x 3-3/4 flange screw 12 point gr. b8m b18.2.1 b18.2.1 usa | inquire |
| Spring Bo | TX | 12 Point Flange Screw (CounterBore) | Grade B8M | Plain | 1/2-13 x 3 3/4 | 1/2(13-3a) x 3-3/4 flange screw 12 point gr. b8m b18.2.1 usa | inquire |
| 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 |
| 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 |
| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 4 | fine 12-point fl/b | 15 |
| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 4 | fine 12-point fl/b | 20 |
| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 4 | coarse 12-point fl/b | 45 |
| Trinity | IA | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Clear | 1/2-13 x 4 | 1/2 - 13 x 4 12 point flange screw 170m psi tensile znpo | 117 |
| EFSCO | OR | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-13 x 4 | nc 12-pt fl/b . | 55 |
| Trinity | IA | 12 Point Flange Screw (CounterBore) | Grade 8 | Zinc/Clear | 1/2 x 4 3/8 | 1/2 x 4 3/8 - 16 12 point flange shoulder screw sae gr 8 j429 znpo | 7202 |
| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 4 1/2 | 1/2-13x4-1/2 ferry c/s | 10 |
| ISSCO | MO | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 4 1/2 | 12 point counterbore screw | 472 |
| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 4 1/2 | fine 12-point fl/b | 20 |
| EFSCO | OR | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-13 x 4 1/2 | nc 12-pt fl/b . | 86 |
| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 5 | ferry c/s | 5 |
| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 5 | coarse 12-point fl/b b18.2.1 | 25 |
| ISSCO | MO | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 5 | 12 point counterbore screw | 50 |
| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 5 | 1/2-13 x 5 12 point cap screw alloy | 25 |
| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 5 1/2 | 1/2-13x5 1/2 coarse 12-point flange screw alloy pln unc | 5 |
| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 5 1/2 | nc 12 pt fl/b pl | 5 |
| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 5 1/2 | fine 12-point fl/b | 10 |
| Hayes | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 6 | 12 pt. ctrbr screw | 15 |
| 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 |
| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-20 x 6 | 1/2-20 x 6 12 point cap screw alloy | 23 |
| MidStates | MI | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2-13 x 7 | 12pt fl/b sc-cntrbore | 8 |
| 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 |
| Century | FL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 1/2 | ms21250-04008 | 10 |
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