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12 Point Flange Screw (CounterBore), Grade 8
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
96 member results, (click on any line for more information)
| Search Results Sponsored by Metric Threaded Products, Inc., your source for Counterbore Screws. For more results, visit www.metric-threaded.com | ||||||||
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| Supplier | Loc | Type | Material | Finish | Size | Description | Qty | |
| MetricThrd | CA | 12 Point Flange Screw (CounterBore) | Grade 8 | Zinc/Yellow | 9/16-18 x 4 | 9/16-18 x 4 alloy 170psi 12 point flange bolts yellow zinc 8u hrc 38-43 | 5,373 |
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| MetricThrd | CA | 12 Point Flange Screw (CounterBore) | Grade 8 | Zinc/Yellow | 9/16-18 x 5 | 9/16-18 x 5 alloy 170psi 12 point flange bolts yellow zinc 8u hrc 38 - 43 | 2,978 |
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| MetricThrd | CA | 12 Point Flange Screw (CounterBore) | Grade 8 | Zinc/Yellow | 9/16-18 x 4 1/2 | 9/16-18 x 4 1/2 alloy 170psi 12 point flange bolts yellow zinc 8u hrc 38 - 43 | 4,225 |
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| Buy Counterbore Screws from one of our FCH Network Members | ||||||||
| 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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| ACCURATE | IL | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 3/8-24 x 1 3/4 | 12-pt flange scr gr8 counter-bor | 184 |
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| ACCURATE | IL | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 5/16-18 x 1 1/2 | 12-pt flange scr gr8 counter-bor | 26 |
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| ACCURATE | IL | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 5/16-24 x 5/8 | 12-pt flange scr gr8 counter-bor | 30 |
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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 1/4 | 3/8-16x1 1/4 gr8 12pt hd flange bolt plain | 300 |
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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 2 | 3/8-16x2 gr8 12pt hd flange bolt plain | 200 |
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| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 3/8-24 x 1 | 3/8-24x1 gr8 12pt hd flange bolt plain | 40 |
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| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 3/8-24 x 1 1/4 | 3/8-24x1 1/4 gr8 12pt hd flange bolt plain | 50 |
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| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 3/8-24 x 1 1/2 | 3/8-24x1 1/2 gr8 12pt hd flange bolt plain | 42 |
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| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 3/8-24 x 2 | 3/8-24x2 gr8 12pt hd flange bolt plain | 50 |
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| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 7/16-14 x 1 | 7/16-14x1 gr8 12pt hd flange bolt plain | 100 |
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| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 7/16-14 x 1 1/4 | 7/16-14x1 1/4 gr8 12pt hd flange bolt plain | 100 |
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| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 7/16-14 x 1 1/2 | 7/16-14x1 1/2 gr8 12pt hd flange bolt plain | 96 |
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| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 7/16-14 x 2 | 7/16-14x2 gr8 12pt hd flange bolt plain | 100 |
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| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 7/16-20 x 1 | 7/16-20x1 gr8 12pt hd flange bolt plain | 50 |
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| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-13 x 1 | 1/2-13x1 gr8 12pt hd flange bolt plain | 125 |
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| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-13 x 1 1/4 | 1/2-13x1 1/4 gr8 12pt hd flange bolt plain | 125 |
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| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-13 x 1 1/2 | 1/2-13x1 1/2 gr8 12pt hd flange bolt plain | 196 |
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| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-13 x 2 | 1/2-13x2 gr8 12pt hd flange bolt plain | 150 |
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| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-13 x 2 1/2 | 1/2-13x2 1/2 gr8 12pt hd flange bolt plain | 100 |
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| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-20 x 1 1/4 | 1/2-20x1 1/4 gr8 12pt hd flange bolt plain | 15 |
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| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-20 x 1 1/2 | 1/2-20x1 1/2 gr8 12pt hd flange bolt plain | 25 |
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| Active | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-20 x 2 1/2 | 1/2-20 x 2-1/2 12-point flange screw coarse 170m psi plain special turned down center per sample gr8 | 220 |
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| Optimas | IL | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 7/16-14 x 1 1/4 | 7/16-14 unc x 1 1/4 12-point cntrbore screw gr 8 cl 3a thread per dwg ppap | 35940.164871215798 |
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| Optimas | IL | 12 Point Flange Screw (CounterBore) | Grade 8 | Phosphate | 5/8-11 x 2 | 5/8-11 x 2.000 12-pt cntrbore screw gr 8 zinc phos/oil class 3a thread per dwg (p) | 149552062988281 |
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| Optimas | IL | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 9/16-12 x 2 1/4 | 9/16-12 unc x 2 1/4 12-point counterbore screw grade 8 ppap ifi 115 | 336.87660217290068 |
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| Optimas | IL | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 7/16-14 x 1 1/2 | 7/16-14 unc x 1 1/2 12-point counterbore screw gr 8 cl 3a thread per dwg ppap | 126.90347051620481 |
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| Optimas | IL | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-13 x 1 1/2 | 1/2-13 unc x 1 1/2 12-point counterbore screw grade 8 per drawing ppap | 1370 |
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| Optimas | IL | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 7/16-14 x 1 1/2 | 7/16-14 unc x 1 1/2 12-point counterbore screw gr 8 cl 3a thread per dwg ppap | 253 |
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| Optimas | IL | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 5/8-11 x 1 1/4 | 5/8-11 unc x 1 1/4 12-point counterbore screw gr 8 cl 3a thread per dwg ppap | 871 |
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| Optimas | IL | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 5/8-11 x 1 3/4 | 5/8-11 unc x 1 3/4 12-point counterbore screw gr 8 cl 3a thread per dwg ppap | 4619 |
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| Optimas | IL | 12 Point Flange Screw (CounterBore) | Grade 8 | Phosphate | 5/8-11 x 2 1/4 | 5/8-11 x 2 1/4 12-pt cntrbore screw gr 8 zinc phos/oil patch class 3a thread ppap | 160 |
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| Optimas | IL | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 3/8-16 x 1 3/4 | 3/8-16 unc x 1 3/4 12-point counterbore screw gr 8 cl 3a thread per dwg ppap | 3471 |
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| Optimas | IL | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-13 x 1 3/4 | 1/2-13 unc x 1 3/4 12-point counterbore screw gr 8 cl 3a thread per dwg ppap | 501 |
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| Century | FL | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 5/16-24 x 1 1/2 | screw cap 5/16-24 x 1 1/2 12pt grade 8 | 1000 |
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| Optimas | IL | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-13 x 1 1/4 | 1/2-13 unc x 1 1/4 12-point counterbore screw gr 8 cl 3a thread per dwg ppap | 22648 |
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| IndexFast | CA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 12 | p037f01508s 3/8-24 x 1 1/2 point flange screw grade 8 full thread | inquire |
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| IndexFast | CA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 12 | p050c03008s 1/2-13x3-pt fl/b | inquire |
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| MetricThrd | CA | 12 Point Flange Screw (CounterBore) | Grade 8 | Zinc/Yellow | 9/16-18 x 4 | 9/16-18 x 4 alloy 170psi 12 point flange bolts yellow zinc 8u hrc 38-43 | 5,373 |
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| MetricThrd | CA | 12 Point Flange Screw (CounterBore) | Grade 8 | Zinc/Yellow | 9/16-18 x 5 | 9/16-18 x 5 alloy 170psi 12 point flange bolts yellow zinc 8u hrc 38 - 43 | 2,978 |
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| MetricThrd | CA | 12 Point Flange Screw (CounterBore) | Grade 8 | Zinc/Yellow | 9/16-18 x 4 1/2 | 9/16-18 x 4 1/2 alloy 170psi 12 point flange bolts yellow zinc 8u hrc 38 - 43 | 4,225 |
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| GLF | OH | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 5/8-11 x 1 3/4 | 5/8-11 x 1-3/4 12 point flange screw-grade 8-plain | 15 |
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| GLF | OH | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 7/16-20 x 1 1/4 | 7/16-20 x 1-1/4 12-pt flange bolt gr 8 stl pln | 102 |
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| GLF | OH | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-13 x 3 | 1/2-13 x 3 hex cap-partialthread-grade 8-12 point-plain | 6 |
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| Liberty | IL | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 3/4-10 x 3 | 12-pt bolt gr8 | 51 |
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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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| Liberty | IL | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 5/8-18 x 1 1/2 | 12-pt c/s | 100 |
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| Liberty | IL | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 3/8-24 x 1 | 12-pt c/s | 50 |
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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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| Liberty | IL | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/4-28 x 1/2 | 12pt bolt gr8 | 1 |
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| 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 |
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| Liberty | IL | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 7/8-9 x 4 1/4 | 12-point c/s | 29 |
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| Liberty | IL | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1 1/4-7 x 6 1/2 | 12-pt c/s | 12 |
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| Liberty | IL | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 3/8-24 x 1 3/4 | 12-pt c/s | 100 |
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| GUIDON | NJ | 12 Point Flange Screw (CounterBore) | Gra de 8 | Plain | 1/4-20 x 1 | 500 |
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| CIF | IL | 12 Point Flange Screw (CounterBore) | Grade 8 | Phosphate | 9/16-18 x 4.906 | 9/16-18 x 4.906 12 point flange bolt grade 8 phos coated | 2880 |
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| CIF | IL | 12 Point Flange Screw (CounterBore) | Grade 8 | Phosphate | 5/8-18 x 2.58 | 5/8-18 x 2.58 12 point flange bolt special grade 8 1.15 flange od zinc phos coated | 13 |
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| CIF | IL | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 3/8-16 x 3 | 3/8-16 x 3 12 point flange bolt grade 8 plain with .700 flange od | 7 |
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| CIF | IL | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 1/2-20 x 2.440 | 1/2-20 x 2.440 12 point flange bolt grade 8 plain | 10800 |
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| CIF | IL | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 3/4-10 x 4 1/2 | 3/4-10 x 4 1/2 12 point flange bolt grade 8 plain | 80 |
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| CIF | IL | 12 Point Flange Screw (CounterBore) | Grade 8 | Black Oxide | 9/16-18 x 2.350 | 9/16-18 x 2.350 12 point flange bolt grade 8 black oxide | 4708 |
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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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| API | IA | 12 Point Flange Screw (CounterBore) | Grade 8 | Phosphate | 3/8-24 x 1 | screw 12-point flange 3/8-24x1 f/t gr8 phos | 50 |
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| Optimas | IL | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 3/8-16 x 5 | 3/8-16 unc x 5.000 12-point counterbore screw grade 8 per dwg ppap | 79 |
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| Coburn Myers Fastening Systems | PA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 12 point flange screw (counterbore) grade 8 plain | 39 |
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| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 3/4-16 x 2 | 3/4-16x2 gr8 12pt hd flange bolt plain | 10 |
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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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| 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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| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 7/16-20 x 1 1/2 | 7/16-20x1 1/2 gr8 12pt hd flange bolt plain | 16 |
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| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 5/8-18 x 2 1/2 | 5/8-18x2 1/2 gr8 12pt hd flange bolt plain | 5 |
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| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 5/8-18 x 3 | 5/8-18x3 gr8 12pt hd flange bolt plain | 25 |
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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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| Weaver | WA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 5/8-18 x 4 | 5/8-18x4 gr8 12pt hd flange bolt plain | 25 |
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| B & K FAST | PA | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 9/16-18 x 1 1/2 | 9/16-18 x 1 1/2 12 pt flange bolts gr 8 plain b18.2.1 | 1 |
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| General F | MI | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 29 | -20 x 1.75 12-pt flange scr gr8 q29 b18.2.1 | 900 |
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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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| OSSCO | RI | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 3/8-24 x 1 | 3/8-24x1 ferry ctrbore cap screw gr8 b18.2.1 | 50 |
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| OSSCO | RI | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 3/4-10 x 4 | 3/4-10x4 ferry ctrbore cap screw gr8 b18.2.1 | 30 |
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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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| 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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| 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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| OBRIEN | OH | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 5/16-18 x 1 3/4 | 12 pt flange scr gr8 black | 24 |
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| OBRIEN | OH | 12 Point Flange Screw (CounterBore) | Grade 8 | Plain | 5/16-18 x 1 | 12 pt flange scr gr8 black | 12 |
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