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5/8-11 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 | Black Oxide | 5/8-11 x 4 | 5/8-11 x 4 alloy blk 12 pt flange screws | 224 |
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| Liberty | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 1/34 | ferry c/s 12-pt drilled 12-pt drilled | 10 |
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| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 1 | nc ferry c/s | 20 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Fluoropolymer-Based (Xylan, Fluorokote, Teflon) | 5/8-11 x 1 | 12 pt lb7 xylan green 5/8-11 x 1 | 60 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Grade B7 | Plain | 5/8-11 x 1 | 12 pt cntr-bor grn b7 5/8-11 x 1 (XYLAN 1425 GREEN) | 60 |
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| All Size | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 1 | 5/8-11 x 1 12 point flange bolt plain b18.2.1 | 18 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 1 | 12 pt countr-bor 5/8-11x1 | 120 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 1 1/4 | coarse 12-point fl/b b18.2.1 | 210 |
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| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 1 1/4 | nc 12 pt fl/b pl | 34 |
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| THRDFAST | FL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 1 1/4 | 12 pt counterbore screw b18.2.1 | 1 |
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| WDMB | IA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 1 1/4 | screw 12pt flange alloy (pl) 5/8-11x1 1/4 | 212 |
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| MidStates | MI | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 1 1/4 | 12pt fl/b-countrbore | 45 |
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| Bostwick | IN | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 1 1/4 | 5/8-11 x 1 1/4 12 pt. counterbore screw alloy b18.2.1 | 78 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 1 1/4 | 12 pt countr-bor 5/8-11x1 1/4 | 130 |
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| Future Fastener | TX | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 5/8-11 x 1 1/2 | 5/8-11 x 1 1/2 12pt ferry cap screw blk | 3 |
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| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 1 1/2 | nc ferry c/s | 25 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 1 1/2 | 12 pt countr-bor plain 5/8-11 x 1 1/2 (DRILLED HEAD) | 95 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Grade B7 | Plain | 5/8-11 x 1 1/2 | 12 pt countr-bor grn b7 5/8-11 x 1 1/2 (XYLAN 1425 GREEN) | 66 |
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| ISSCO | MO | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 1 1/2 | 12 point counterbore screw | 405 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 1 1/2 | coarse 12-point fl/b | 110 |
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| THRDFAST | OK | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 1 1/2 | 12 pt counterbore screw b18.2.1 | 32 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Grade B7 | Plain | 5/8-11 x 1 5/8 | 12 pt countr-bor grn b7 5/8-11x1 5/8 | 47 |
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| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 5/8-11 x 1 3/4 | 5/8-11x1 3/4 gr8 12pt hd flange bolt plain | 50 |
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| B & K FAST | PA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 1 3/4 | 5/8-11 x 1 3/4 12 pt flange bolts b18.2.1 | 44 |
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| SunPack | FL | 12 Point Flange Screw (CounterBore) | Grade B7 | Fluoropolymer-Based (Xylan, Fluorokote, Teflon) | 5/8-11 x 1 3/4 | 5/8-11x1-3/4 a193 b7 12pt ferry head bolt ptfe blue | 3 |
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| Valley Nu | WA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 1 3/4 | nc 12 pt fl/b pl | 2 |
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| GLF | OH | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 5/8-11 x 1 3/4 | 5/8-11x1-3/4 12 point flange screw-grade 8-plain b18.2.1 () () | 15 |
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| OBRIEN | OH | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 1 3/4 | 12pt fl/b | 4 |
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| SunPack | FL | 12 Point Flange Screw (CounterBore) | Grade B7 | Fluoropolymer-Based (Xylan, Fluorokote, Teflon) | 5/8-11 x 1 3/4 | 5/8-11x1-3/4 a193 b7 12pt ferry head bolt ptfe blue | 3 |
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| ISSCO | MO | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Clear | 5/8-11 x 1 3/4 | 12 point counterbore screw | 491 |
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| WDMB | IA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 1 3/4 | screw 12pt flange alloy (pl) 5/8-11x1 3/4 | 255 |
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| WDMB | IA | 12 Point Flange Screw (CounterBore) | Steel | Phosphate | 5/8-11 x 1 3/4 | screw 12pt flange all (po) 5/8-11x1 3/4 drw | 30 |
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| Wurth | IN | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 1 3/4 | 5/8-11 x 1-3/4 ctr-bor screw alloy | 5,128 |
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| ASFCORP | MI | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 1 3/4 | 5/8-11 x 1 3/4 counter bore scw alloy pkg | 15 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 1 3/4 | coarse 12-point fl/b | 14 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 2 | 5/8-11 x 2 12 point cap screw alloy b18.2.1 | 1 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 2 | 5/8-11 x 2 12 point cap screw alloy b18.2.1 | 5 |
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| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 5/8-11 x 2 | 5/8-11x2 gr8 12pt hd flange bolt plain | 1 |
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| Future Fastener | TX | 12 Point Flange Screw (CounterBore) | Grade B7 | Black Oxide | 5/8-11 x 2 | 5/8-11 x 2 (12 pt) b7 ferry hd cap blk | 6 |
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| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 2 | nc ferry c/s | 70 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 2 | 12 pt countr-bor plain 5/8-11 x 2 | 182 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 2 | 12 pt countr-bor plain 5/8-11 x 2 (DRILLED HEAD) | 178 |
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| Wurth | IN | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 2 | 5/8-11 x 2 countr-bor screw alloy pack 90 per poly bag | 19,448 |
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| Wurth | IN | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Yellow | 5/8-11 x 2 | 5/8-11 x 2 countr-bor screw alloy znc/ye zinc/yellow plated | 500 |
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| JET Indus | WI | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 2 | 12pt. flange bolt 5/8-11x2 plain | 142 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | 316, 317, A4 Stainless | Plain | 5/8-11 x 2 | 12 pt cap screw 316 sst 5/8-11x2 | 1700 |
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| CIF | IL | 12 Point Flange Screw (CounterBore) | Steel | Phosphate | 5/8-11 x 2 | 5/8-11x2 12 point flange bolt alloy steel phos coated for 72 hours to red rust (9000) |
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| CIF | IL | 12 Point Flange Screw (CounterBore) | Grade 9 | Plain | 5/8-11 x 2 | 5/8-11x2 12 point flange bolt alloy steel grade 9 plain (63228) () | 63228 |
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| CIF | IL | 12 Point Flange Screw (CounterBore) | Grade 9 | Phosphate | 5/8-11 x 2 | 5/8-11x2 12 point flange bolt alloy steel grade 9 with headmark phos coated and dry anti seize patch per mpap s-b-4.101-gs/pl (9919) () | 18909 |
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| Set Screw | IL | 12 Point Flange Screw (CounterBore) | Grade B7 | Nickel | 5/8-11 x 2 1/4 | 12-pt fl/b astm193 b7 material plate & bake per print | inquire |
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| Jackson | MS | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 2 1/4 | nc ferry c/s | 82 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Grade B7 | Plain | 5/8-11 x 2 1/4 | 12 pt countr-bor a193-b7 5/8-11 x 2 1/4 | 224 |
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| CNB | IL | 12 Point Flange Screw (CounterBore) | Steel | Zinc/Clear | 5/8-11 x 2 1/4 | 12-point counterbore | 50 |
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| ISSCO | MO | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 2 1/4 | 12 point counterbore screw | 185 |
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| Wurth | IN | 12 Point Flange Screw (CounterBore) | Steel | Electrolytic Zinc Basecoat + Topcoats (Climacoat, Climaseal, etc.) | 5/8-11 x 2 1/4 | 5/8-11 x 2 1/4 counter-bor alloy zinc flake | 194 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 2 1/4 | coarse 12-point fl/b | 15 |
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| OSSCO | RI | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 5/8-11 x 2 1/4 | 5/8-11x2 1/4 ferry ctrbore cap screw gr8 b18.2.1 | 15 |
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| Set Screw | IL | 12 Point Flange Screw (CounterBore) | Grade B7 | Nickel | 5/8-11 x 2 3/8 | 12-pt fl/b astma193 b7 material plate & bake per print | inquire |
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| CIF | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 2 1/2 | 5/8-11x2 1/2 12 point flange bolt with 1.750 useable thread alloy plain (38) (38) (38) () | 38 |
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| OBRIEN | OH | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 2 1/2 | 12pt fl/b | 1 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 2 1/2 | 12 pt countr-bor plain 5/8-11 x 2 1/2 | 59 |
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| ISSCO | MO | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 2 1/2 | 12 point counterbore screw | 225 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 2 1/2 | coarse 12-point fl/b | 33 |
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| Liberty | IL | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 5/8-11 x 2 1/2 | 5/8-11x2-1/2 hex c/s 12-pt bolt screw 12-pt bolt | 20 |
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| Hayes | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 2 1/2 | 5/8-11 x 2 1/2 12 pt. ctrbr screw alloy | 7 |
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| OSSCO | RI | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 5/8-11 x 2 1/2 | 5/8-11x2 1/2 ferry ctrbore cap screw gr8 b18.2.1 | 20 |
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| Dan-Loc | TX | 12 Point Flange Screw (CounterBore) | Grade B7 | Plain | 5/8-11 x 2 1/2 | 5/8-11x2-1/2 c/s 12 pt b7/l7 pl full thread | 20590 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Grade B7M | Plain | 5/8-11 x 2 1/2 | 12 pt countr-bor dom. lb7m 5/8-11x2 1/2 (W/PC) | 96 |
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| Set Screw | IL | 12 Point Flange Screw (CounterBore) | Grade B7 | Nickel | 5/8-11 x 2 3/4 | 12-pt fl/b astma193 b7 material plate & bake per print | inquire |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 2 3/4 | 12 pt countr-bor plain 5/8-11 x 2 3/4 | 61 |
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| Wurth | IN | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 2 3/4 | 5/8-11x2 3/4 counter-bor alloy pack 45 per poly bag | 302 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 2 3/4 | coarse 12-point fl/b | 15 |
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| Future Fastener | TX | 12 Point Flange Screw (CounterBore) | Steel | Black Oxide | 5/8-11 x 3 | 5/8-11 x 3 ferry head cap screw blk | 50 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Fluoropolymer-Based (Xylan, Fluorokote, Teflon) | 5/8-11 x 3 | 12 pt lb7 xylan green 5/8-11 x 3 | 61 |
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| OSSCO | RI | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 5/8-11 x 3 | 5/8-11x3 ferry ctrbore cap screw gr8 b18.2.1 | 17 |
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| Dan-Loc | TX | 12 Point Flange Screw (CounterBore) | Grade B7 | Plain | 5/8-11 x 3 | 5/8-11x3 c/s 12 pt b7/l7 pl full thread | 5494 |
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| Delta | TX | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 3 | 12 pt countr-bor 5/8-11x3 | 100 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 3 1/4 | 5/8-11x3 1/4 coarse 12-point flange screw alloy pln clearance unc | 20 |
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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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| 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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| 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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| 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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| 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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| 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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| 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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| Set Screw | IL | 12 Point Flange Screw (CounterBore) | Grade B7 | Nickel | 5/8-11 x 3 3/4 | 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 | 5/8-11 x 4 | 5/8-11 x 4 alloy blk 12 pt flange screws | 224 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 4 | coarse 12-point fl/b | 9 |
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| Wurth | IN | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 4 | 5/8-11 x 4 countr-bor 12pt screw alloy pack 25 per poly bag | 420 |
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| ASFCORP | MI | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 4 | 5/8-11 x 4 counter bore scw alloy | 1,005 |
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| Bostwick | IN | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 4 | 5/8-11 x 4 12 pt. counterbore screw alloy b18.2.1 | 9 |
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| Bostwick | IN | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 4 1/2 | 5/8-11 x 4 1/2 12 pt. counterbore screw alloy b18.2.1 | 12 |
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| CNB | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 5 | 12-pt c/s | 100 |
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| MidStates | MI | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 5 | in 12pt fl/b sc-cntrbore | 13 |
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| ASMC | IL | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 5 1/2 | 5/8-11x5 1/2 coarse 12-point flange screw alloy pln unc | 38 |
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| MidStates | MI | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 6 | in 12pt fl/b sc-cntrbore | 9 |
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| Ababa | CA | 12 Point Flange Screw (CounterBore) | Steel | Plain | 5/8-11 x 6 1/2 | 5/8-11 x 6 1/2 inch 12 point cap screw alloy b18.2.1 | 5 |
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