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5/16-18 Hex Cap Screws
Hex Cap Screws are hex headed fasteners with external machine screw threads and differ from hex machine bolts by having a washer surface on the underside or bearing side of the head and a chamfered thread end. Hex cap screws have tighter dimensional tolerances than bolts. Metric hex cap screws are specified by various DIN, ISO and JIS standards, and US/Imperial hex cap screws are dimensionally specified by the ASME B18.2.1 specification.
176,732 Hex Head Cap Screw, showing 200, (click on any line for more information)
| Buy Hex Cap Screws from one of our FCH Network Members | ||||||||
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| Supplier | Loc | Type | Material | Finish | Size | Description | Qty | |
| MESAFAST | CA | Hex Head Cap Screw | Grade 2 | Zinc/Clear | 5/16-18 x 1 1/4 | hex c/s gr2 | 22.0 |
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| MESAFAST | CA | Hex Head Cap Screw | Grade 2 | Zinc/Clear | 5/16-18 x 3/4 | hex c/s gr2 | 740.0 |
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| MESAFAST | CA | Hex Head Cap Screw | Grade 2 | Zinc/Clear | 5/16-18 x 6 | hex c/s gr2 | 28.0 |
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| MESAFAST | CA | Hex Head Cap Screw | Grade 2 | Zinc/Clear | 5/16-18 x 5/8 | hex c/s gr2 | 40.0 |
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| MESAFAST | CA | Hex Head Cap Screw | Grade 2 | Galvanized | 5/16-18 x 1 | hex c/s gr2 hot dip | 50.0 |
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| MESAFAST | CA | Hex Head Cap Screw | Grade 2 | Zinc/Clear | 5/16-18 x 8 | hex c/s gr2 | 240.0 |
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| MESAFAST | CA | Hex Head Cap Screw | Grade 2 | Zinc/Clear | 5/16-18 x 3 | hex c/s gr2 | 20.0 |
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| MESAFAST | CA | Hex Head Cap Screw | Grade 2 | Zinc/Clear | 5/16-18 x 2 1/2 | hex c/s gr2 | 22.0 |
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| MESAFAST | CA | Hex Head Cap Screw | Grade 2 | Zinc/Clear | 5/16-18 x 3 1/4 | hex c/s gr2 | 45.0 |
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| MESAFAST | CA | Hex Head Cap Screw | Grade 2 | Zinc/Clear | 5/16-18 x 3 1/2 | hex c/s gr2 | 7.0 |
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| MESAFAST | CA | Hex Head Cap Screw | Grade 2 | Zinc/Clear | 5/16-18 x 1/2 | hex c/s gr2 | 28.0 |
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| MESAFAST | CA | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 1 | hex c/s gr5 | 70.0 |
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| MESAFAST | CA | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 8 | hex c/s gr5 | 35.0 |
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| MESAFAST | CA | Hex Head Cap Screw | Grade 5 | Plain | 5/16-18 x 2 | hex c/s gr5 | 2.0 |
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| MESAFAST | CA | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 2 3/4 | hex c/s gr5 | 231.0 |
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| MESAFAST | CA | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 1 1/2 | hex c/s gr5 | 31.0 |
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| MESAFAST | CA | Hex Head Cap Screw | Grade 8 | Plain | 5/16-18 x 2 1/4 | hex c/s gr8 | 108.0 |
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| MESAFAST | CA | Hex Head Cap Screw | Grade 8 | Zinc/Yellow | 5/16-18 x 1 | hex c/s gr8 zc | 135.0 |
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| MESAFAST | CA | Hex Head Cap Screw | Grade 8 | Plain | 5/16-18 x 3/4 | hex c/s gr8 | 28.0 |
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| MESAFAST | CA | Hex Head Cap Screw | Grade 8 | Plain | 5/16-18 x 2 | hex c/s gr8 | 30.0 |
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| Century | FL | Hex Head Cap Screw | Steel | Plain | 5/16-18 x 1 1/4 | 5/16-18 x 1 1/4 hex head cap screw grade (5/16 X 1 1/4 HEX HEAD CAP SCREW GRADE 5) (5/16 X 1 1/4 HEX HEAD CAP SCREW GRADE 5) | 3 |
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| Cal Fastenrs | CA | Hex Head Cap Screw | Grade 5 | Cadmium | 5/16-18 x 3/4 | hex c/s cad pl | 19 |
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| Cal Fastenrs | CA | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 2 1/2 | hex c/s 18-8 304 | 150 |
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| Cal Fastenrs | CA | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 2 1/4 | hex c/s cr3 | 1,184 |
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| ASMC | IL | Hex Head Cap Screw | Grade 5 | Plain | 5/16-18 x 3 | 5/16-18x3 (pt) coarse gr5 hex cap screw-usa med carb pln b18.2.1 | 54 |
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| Endries | WI | Hex Head Cap Screw | Grade 5 | Zinc/Black | 5/16-18 x 1 | 5/16-18x1 hex cap screw p136 blk grade 5 znc | 584 |
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| Endries | WI | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 3 | 5/16-18x3 grade 5 hex head cap screw trivalent clear zinc certified material test report | 600 |
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| Endries | WI | Hex Head Cap Screw | Grade 5 | Zinc/Yellow | 5/16-18 x 3/4 | 5/16-18x3/4 grade 5 hex head cap screw tri ylw 96hr wh f1941 .0002 | 8550 |
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| Endries | WI | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 2 | 5/16-18x2 grade 5 hex head cap screw tri clr zinc 120 wh/144 red rust | 2700 |
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| Endries | WI | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 1 1/2 | 5/16-18x1-1/2 grade 5 hex head cap screw trivalent clear zinc certified material test report | 1873 |
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| Endries | WI | Hex Head Cap Screw | Grade 8 | Zinc/Clear | 5/16-18 x 1 1/4 | 5/16-18x1-1/4 grade 8 hex head cap screw trivalent clear zinc | 17600 |
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| Endries | WI | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 4 1/4 | 5/16-18x4-1/4 grade 5 hex head cap screw zinc | 400 |
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| Liberty | IL | Hex Head Cap Screw | Grade 2 | Zinc/Yellow | 5/16-18 x 2 | c/s | 1,000 |
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| Liberty | IL | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 3 | c/s rohs | 1,100 |
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| Liberty | IL | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 3/4 | hex c/s rohs | 562 |
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| Liberty | IL | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 1 3/4 | c/s 18-8 s/s | 80 |
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| Liberty | IL | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 2 1/4 | c/s 18-8 s/s | 50 |
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| Liberty | IL | Hex Head Cap Screw | Silicon Bronze | Plain | 5/16-18 x 1 | c/s | 3 |
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| MESAFAST | CA | Hex Head Cap Screw | Grade 5 | Plain | 5/16-18 x 1 1/2 | hex c/s gr5 | 50.0 |
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| Alma Bolt | MI | Hex Head Cap Screw | Grade 8 | Plain | 5/16-18 x 1 1/4 | 5/16-18 x 1 1/4 grade 8 alloy hex cap screw b18.2.1 | 624 |
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| Alma Bolt | MI | Hex Head Cap Screw | Steel | Galvanized | 5/16-18 x 2 | 5/16-18 x 2 hdg hex cap screw b18.2.1 | 888 |
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| MESAFAST | CA | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 2 | hex c/s gr5 | 19.0 |
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| SWACO | OH | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 2 1/4 | 5/16-18x2 1/4 hhcs gr5 zinc | 299 |
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| SWACO | OH | Hex Head Cap Screw | 316, 317, A4 Stainless | Plain | 5/16-18 x 3/4 | 5/16-18x3/4 hex cap sc 316 ss | 799 |
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| SWACO | OH | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 5 | 5/16-18x5 hex hd c/s grade 5 full thread zinc | 51 |
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| Purchase | MO | Hex Head Cap Screw | Grade 2 | Plain | 5/16-18 x 1 | 5/16-18 x 1 hex c/s gr 2 steel plain | 2100 |
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| Purchase | MO | Hex Head Cap Screw | Grade 5 | Zinc/Yellow | 5/16-18 x 1 | 5/16-18 x 1 hex c/s gr 5 zinc & yellow | 98 |
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| Purchase | MO | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 3/4 | 5/16-18 x 3/4 hex c/s gr.5 steel zinc | 200 |
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| Purchase | MO | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 3/4 | 5/16-18 x 3/4 hex c/s gr. 5 steel zinc | 4500 |
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| Purchase | MO | Hex Head Cap Screw | Grade 8 | Plain | 5/16-18 x 3/4 | 5/16-18 x 3/4 hex c/s gr. 8 plain | 2600 |
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| Purchase | MO | Hex Head Cap Screw | Grade 2 | Plain | 5/16-18 x 3/4 | 5/16-18 x 3/4 hex c/s gr 2 steel plain | 1971 |
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| Purchase | MO | Hex Head Cap Screw | Grade 2 | Plain | 5/16-18 x 1 1/2 | 5/16-18 x 1 1/2 hex c/s gr 2 steel plain | 3114 |
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| Purchase | MO | Hex Head Cap Screw | Grade 8 | Zinc/Yellow | 5/16-18 x 3/4 | 5/16-18 x 3/4 hex c/s gr. 8 zinc & yellow | 1231 |
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| Purchase | MO | Hex Head Cap Screw | Grade 8 | Zinc/Yellow | 5/16-18 x 1/2 | 5/16-18 x 1/2 hex c/s gr. 8 zinc & yellow | 2090 |
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| Purchase | MO | Hex Head Cap Screw | Grade 8 | Plain | 5/16-18 x 1 3/4 | 5/16-18 x 1 3/4 hex c/s gr. 8 plain | 2600 |
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| Purchase | MO | Hex Head Cap Screw | Grade 8 | Zinc/Yellow | 5/16-18 x 2 1/2 | 5/16-18 x 2 1/2 hex c/s gr. 8 zinc & yellow | 379 |
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| Purchase | MO | Hex Head Cap Screw | Grade 8 | Zinc/Yellow | 5/16-18 x 2 | 5/16-18 x 2 hex c/s gr 8 zinc yellow & bake | 378 |
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| Purchase | MO | Hex Head Cap Screw | Steel | Zinc/Clear | 5/16-18 x 1 1/4 | 5/16-18 x 1 1/4 hex c/s stl zn | 800 |
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| Purchase | MO | Hex Head Cap Screw | Grade 8 | Zinc/Yellow | 5/16-18 x 1 1/2 | 5/16-18 x 1 1/2 hex c/s gr. 8 zinc & yellow | 6000 |
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| Purchase | MO | Hex Head Cap Screw | Steel | Zinc/Clear | 5/16-18 x 3 1/4 | 5/16-18 x 3 1/4 hex c/s stl zinc | 460 |
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| Purchase | MO | Hex Head Cap Screw | Grade 8 | Zinc/Yellow | 5/16-18 x 1 | 5/16-18 x 1 hex c/s gr8 zinc & yel | 1095 |
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| Purchase | MO | Hex Head Cap Screw | Steel | Zinc/Clear | 5/16-18 x 2 1/2 | 5/16-18 x 2 1/2 hex c/s stl zn | 200 |
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| HBBOLT | CA | Hex Head Cap Screw | Nylon (Polyamide) | Plain | 5/16-18 x 1 | hex c/s | 500 |
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| WDMB | IA | Hex Head Cap Screw | Grade 5 | Plain | 5/16-18 x 2 1/4 | hex cap screw grade 5 (zf) 5/16-18x2 1/4 (W0I0) | 408 |
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| WDMB | IA | Hex Head Cap Screw | Grade 5 | Plain | 5/16-18 x 2 1/4 | hex cap screw grade 5 (pl) 5/16-18x2 1/4 (W000) | 2,187 |
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| ACF | CA | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 1/2 | 5/16-18x1/2 s/s hex head cap screw | 46 |
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| ACF | CA | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 5/8 | 5/16-18x5/8 s/s hex head cap screw | 873 |
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| ACF | CA | Hex Head Cap Screw | 316, 317, A4 Stainless | Plain | 5/16-18 x 3/4 | 5/16-18x3/4 type-316 s/s hex c/s | 46 |
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| ACF | CA | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304 ,310 etc.) | Plain | 5/16-18 x 7/8 | 5/16-18x7/8 s/s hex head cap screw | 5699 |
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| ACF | CA | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 1 1/8 | 5/16-18x1-1/8 s/s hex head cap screw | 1189 |
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| ACF | CA | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 1 3/4 | 5/16-18x1-3/4 s/s hex head cap screw | 108 |
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| ACF | CA | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Black Oxide | 5/16-18 x 1 1/4 | 5/16-18x1-1/4 s/s hex c/s black oxide | 594 |
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| ACF | CA | Hex Head Cap Screw | 316, 317, A4 Stainless | Plain | 5/16-18 x 1 | 5/16-18x1 type-316 s/s hex c/s | 2045 |
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| ACF | CA | Hex Head Cap Screw | Silicon Bronze | Plain | 5/16-18 x 1 1/2 | 5/16-18x1-1/2 silicon bronze hex head cap screw | 200 |
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| ACF | CA | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 1 | 5/16-18x1 s/s hex head cap screw | 1338 |
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| ACF | CA | Hex Head Cap Screw | Brass | Plain | 5/16-18 x 1 3/4 | 5/16-18x1-3/4 brass hex head cap screw | 1483 |
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| ACF | CA | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 1 1/2 | 5/16-18x1-1/2 s/s hex head cap screw | 1425 |
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| ACF | CA | Hex Head Cap Screw | 316, 317, A4 Stainless | Plain | 5/16-18 x 1 1/4 | 5/16-18x1-1/4 type-316 s/s hex c/s | 394 |
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| ACF | CA | Hex Head Cap Screw | Brass | Plain | 5/16-18 x 1 1/2 | 5/16-18x1-1/2 brass hex head cap screw | 110 |
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| ACF | CA | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 2 | 5/16-18x2 s/s hex head cap screw | 802 |
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| ACF | CA | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 3 1/2 | 5/16-18x3-1/2 s/s hex head cap screw | 2639 |
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| ACF | CA | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 3 1/4 | 5/16-18x3-1/4 s/s hex head cap screw | 54 |
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| ACF | CA | Hex Head Cap Screw | Grade 2 | Zinc/Clear | 5/16-18 x 3/4 | 5/16-18x3/4 hex cap screw grade 2 z/p rohs | 52 |
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| ACF | CA | Hex Head Cap Screw | Grade 2 | Zinc/Clear | 5/16-18 x 1 | 5/16-18x1 hex head cap screw gr2 z/p rohs compliant | 450 |
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| ACF | CA | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 1/2 | 5/16-18x1/2 gr5 hex head cap screw z/p domestic | 200 |
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| Hewes | NY | Hex Head Cap Screw | Grade 2 | Zinc/Clear | 5/16-18 x 2 | hhc gr2 pl | 900 |
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| Hewes | NY | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 1 3/4 | hhc gr5 pl | 1388 |
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| Hewes | NY | Hex Head Cap Screw | Grade 8 | Zinc/Yellow | 5/16-18 x 1 1/2 | hhc gr8 | 675 |
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| Hewes | NY | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 2 | hhc 18-8 s/s | 235 |
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| Hewes | NY | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 1 1/2 | hhc gr5 plate with patch | 2650 |
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| Hewes | NY | Hex Head Cap Screw | Grade 8 | Plain | 5/16-18 x 1 3/4 | hhc gr8 finish | 3 |
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| Hewes | NY | Hex Head Cap Screw | Grade 5 | Plain | 5/16-18 x 2 | hhc gr5 finish | 104 |
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| Hewes | NY | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 2 | hhc gr5 pl | 595 |
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| Hewes | NY | Hex Head Cap Screw | Grade 8 | Plain | 5/16-18 x 2 1/2 | hhc gr8 finish | 200 |
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| Hewes | NY | Hex Head Cap Screw | Grade 2 | Zinc/Clear | 5/16-18 x 2 1/4 | hhc pl | 387 |
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| Hewes | NY | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 2 1/2 | hhc gr5 pl | 125 |
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| Hewes | NY | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 2 3/4 | hhc gr5 pl | 445 |
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| Hewes | NY | Hex Head Cap Screw | Grade 8 | Zinc/Yellow | 5/16-18 x 2 1/2 | hhc gr8 | 19 |
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| Hewes | NY | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 2 1/2 | hhc 18-8 s/s | 320 |
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| Hewes | NY | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 2 1/4 | hhc gr5 pl | 300 |
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| Hewes | NY | Hex Head Cap Screw | Grade 5 | Plain | 5/16-18 x 2 1/2 | hhc gr5 | 24 |
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| Hewes | NY | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 5 1/2 | 5/16-18x 5-1/2 hhc gr5 plate / infasco | 104 |
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| Hewes | NY | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 3 | hhc gr5 pl | 137 |
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| Hewes | NY | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 3 1/2 | hhc gr5 pl. | 215 |
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| Hewes | NY | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 3 3/4 | hhc gr5 plate / infasco | 26 |
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