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3/8 inch length 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.
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| Buy Hex Cap Screws from one of our FCH Network Members | ||||||||
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| Supplier | Loc | Type | Material | Finish | Size | Description | Qty | |
| Jackson | MS | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 1/4 x 3/8 | nc hex c/s | 4409 |
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| Jackson | MS | Hex Head Cap Screw | Grade 8 | Zinc/Yellow | 1/4 x 3/8 | nc hex c/s | 2945 |
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| Jackson | MS | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4 x 3/8 | nc hex c/s 18-8 ss | 700 |
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| MAINSOURC | NH | Hex Head Cap Screw | Grade 5 | Plain | 1/4-20 x 3/8 | 1/4-20x3/8 hex cap screw grade 5 z/clr | 3839 |
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| MAINSOURC | NH | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 3/8 | 1/4-20x3/8 hex cap screw 18-8 ss | 954 |
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| Weaver | WA | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 3/8 | 1/4-20x3/8 hex c/s 18-8 ss | 268 |
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| Weaver | WA | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-28 x 3/8 | 1/4-28x3/8 hex c/s 18-8 ss | 1000 |
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| Weaver | WA | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/8-16 x 3/8 | 3/8-16x3/8 hex c/s 18-8 ss | 200 |
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| Weaver | WA | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 1/4-20 x 3/8 | 1/4-20x3/8 gr5 hex c/s zinc | 1000 |
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| MESAFAST | CA | Hex Head Cap Screw | Grade 5 | Plain | 1/4-20 x 3/8 | hex c/s gr5 steel | 300.0 |
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| Set Screw | IL | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #10-24 x 3/8 | 18-8 304 c/s | inquire |
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| Century | FL | Hex Head Cap Screw | Steel | Plain | 1/4-20 x 3/8 | 1/4-20 x 3/8 head cap screw (GRADE 5 STEEL ZINC) (GRADE 5 STEEL ZINC) | 52 |
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| Century | FL | Hex Head Cap Screw | Steel | Plain | 1/4-20 x 3/8 | 1/4-20 x 3/8 hex hd cap screw (18-8) (18-8) | 467 |
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| Century | FL | Hex Head Cap Screw | Steel | Plain | 1/4-20 x 3/8 | 1/4-20 x 3/8 hex hd cap screw (GRADE 5 ZY) (GRADE 5 ZY) | 1355 |
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| Century | FL | Hex Head Cap Screw | Steel | Plain | 1/4-20 x 3/8 | 1/4-20 x 3/8 hex hd cap screw (STEEL ZINC PLT) (STEEL ZINC PLT) | 10110 |
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| Century | FL | Hex Head Cap Screw | Grade 5 | Plain | 1/4-20 x 3/8 | 1/4-20 x 3/8 grade 5 hex hd cap sc (STEEL TRIVALENT ZINC ROHS COMPLIANT) (STEEL TRIVALENT ZINC ROHS COMPLIANT) | 3800 |
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| Century | FL | Hex Head Cap Screw | Steel | Plain | 1/4-20 x 3/8 | 1/4-20 x 3/8 hex hd cap screw (316 SS) (316 SS) | 206 |
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| Century | FL | Hex Head Cap Screw | Steel | Plain | 1/4-28 x 3/8 | 1/4-28 x 3/8 hex hd cap screw (18-8) (18-8) | 78 |
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| Century | FL | Hex Head Cap Screw | Steel | Plain | 5/16-18 x 3/8 | 5/16-18 x 3/8 hex hd cap screw (18-8) (18-8) | 150 |
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| Century | FL | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #6-32 x 3/8 | 6-32 x 3/8 trimmed hex hd (18-8) (18-8) | 1075 |
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| Century | FL | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #2-56 x 3/8 | nas1635-02-6 | 890 |
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| Century | FL | Hex Head Cap Screw | Grade 5 | Cadmium/Yellow | 1/4-20 x 3/8 | ms90725-1 | 136 |
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| Century | FL | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Passivated | #6-32 x 3/8 | nas1301c6-6 | 50 |
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| Endries | WI | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 1/4-20 x 3/8 | 1/4-20x3/8 grade 5 hex head cap screw trivalent clear zinc source controlled | 10000 |
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| Endries | WI | Hex Head Cap Screw | Grade 5 | Nickel Plated | 1/4-20 x 3/8 | 1/4-20x3/8 hex c/s grade 5 nickel plate | 563 |
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| YANKEE | NH | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #10-24 x 3/8 | 10-24 x 3/8 hex cap screw stain steel | 238 |
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| YANKEE | NH | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #10-32 x 3/8 | 10-32 x 3/8 hex cap scr s/s black | 150 |
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| YANKEE | NH | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 1/4-20 x 3/8 | 1/4-20 x 3/8 hex head cap screw grade 5 zinc plated | 2900 |
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| YANKEE | NH | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 3/8 | 5/16-18 x 3/8 hex cap screw stain steel | 129 |
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| YANKEE | NH | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/8-16 x 3/8 | 3/8-16 x 3/8 hex cap screw stain steel | 50 |
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| YANKEE | NH | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 3/8 | hex c/s 18-8 s/s | 680 |
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| YANKEE | NH | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-28 x 3/8 | hex c/s 18-8 s/s | 992 |
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| YANKEE | NH | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #10-32 x 3/8 | hex c/s stain | 1160 |
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| R&S Indus | OR | Hex Head Cap Screw | Steel | Zinc/Clear | #10-32 x 3/8 | 10/32 x 3/8 hex cap screw zinc | 600 |
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| R&S Indus | OR | Hex Head Cap Screw | Grade 8 | Zinc/Yellow | 1/4-20 x 3/8 | 1/4-20 x 3/8 hex cap screw gr-8 nc yellow zinc | 3,390 |
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| GLF | OH | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 1/4-20 x 3/8 | 1/4-20x3/8 hhcs grade 5 stl zc b18.2.1 () () () | 3721 |
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| GLF | OH | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 3/8 | 1/4-20x3/8 hhcs 18-8 s/s b18.2.1 () () () | 297 |
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| GLF | OH | Hex Head Cap Screw | Grade 5 | Zinc/Black | 1/4-20 x 3/8 | 1/4-20x3/8 hhcs grade 5 stl ams 2417/astmb841 bzn b18.2.1 () () () | 1622 |
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| GLF | OH | Hex Head Cap Screw | Grade 8 | Zinc/Yellow | 1/4-20 x 3/8 | 1/4-20x3/8 hex cap-full thread-grade 8-zinc yellow-cr6 b18.2.1 () () () | 2211 |
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| Cal Fastenrs | CA | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 3/8 | 4-40 x 3/8 hex hd unsltd ss | 1,000 |
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| American | NY | Hex Head Cap Screw | Steel | Zinc/Clear | 1/4-28 x 3/8 | hex cap pl | 200 |
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| Ababa | CA | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 1/4-20 x 3/8 | 1/4-20 x 3/8 h/c gr 5 znc b18.2.1 | 400 |
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| Ababa | CA | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 3/8 | 1/4-20 x 3/8 h/c s/s b18.2.1 | 765 |
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| Ababa | CA | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-28 x 3/8 | 1/4-28 x 3/8 h/c s/s b18.2.1 | 241 |
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| Ababa | CA | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 3/8 | 5/16-18 x 3/8 h/c s/s b18.2.1 | 125 |
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| TownCountry | AR | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 1/4-20 x 3/8 | hex c/s gr.5 | 2975 |
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| Ababa | CA | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 3/8 | 1/4-20 x 3/8 h/c s/s b18.2.1 | 200 |
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| ACCURATE | IL | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 1/4-20 x 3/8 | coar hex c/sr gr5 | 11750 |
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| ACCURATE | IL | Hex Head Cap Screw | Steel | Plain | 1/4-28 x 3/8 | fine button c/s | 448 |
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| ACCURATE | IL | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 5/16-18 x 3/8 | coar hex c/sr gr5 | 1398 |
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| ACCURATE | IL | Hex Head Cap Screw | Steel | Plain | #8-32 x 3/8 | coarse button c/s | 250 |
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| ACCURATE | IL | Hex Head Cap Screw | Steel | Plain | #10-32 x 3/8 | fine button c/s | 218 |
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| ACCURATE | IL | Hex Head Cap Screw | Steel | Plain | #6-32 x 3/8 | coarse button c/s | 467 |
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| ACCURATE | IL | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/8-16 x 3/8 | hex c/sr 18-8 s/s | 199 |
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| ACCURATE | IL | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 3/8 | hex c/sr 18-8 s/s | 199 |
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| ACCURATE | IL | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 3/8 | hex c/sr 18-8 s/s | 700 |
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| Alma Bolt | MI | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 1/4-20 x 3/8 | 1/4-20 X 3/8 GRADE 5 HCS ZP b18.2.1 | 790 |
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| METRO IND | OH | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #4-40 x 3/8 | c/s trimmed s/s | 200 |
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| METRO IND | OH | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 1/4-20 x 3/8 | hex c/s | 500 |
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| METRO IND | OH | Hex Head Cap Screw | Nylon (Polyamide) | Plain | #10-24 x 3/8 | hex c/s | 1499 |
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| METRO IND | OH | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #10-24 x 3/8 | hex c/s s/s | 210 |
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| METRO IND | OH | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #6-32 x 3/8 | hex c/s s/s trimmed | 297 |
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| METRO IND | OH | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #8-32 x 3/8 | hex c/s s/s trimmed | 47 |
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| METRO IND | OH | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #10-32 x 3/8 | hex c/s SAE s/s trimmed | 347 |
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| HBBOLT | CA | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 1/4-20 x 3/8 | hc gr.5 z/p | 500 |
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| WDMB | IA | Hex Head Cap Screw | 316, 317, A4 Stainless | Plain | 1/4-20 x 3/8 | hex cap screw 316 1/4-20x3/8 (W0J0) | 1,750 |
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| WDMB | IA | Hex Head Cap Screw | Grade 8 | Zinc/Clear | 5/16-24 x 3/8 | hex cap screw grade 8 (zn) 5/16-24x3/8 (W010) | 175 |
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| QFC | TX | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 3/8 | 1/4-20x3/8 hex c/s 18-8 b18.2.1 | 163 |
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| QFC | TX | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 3/8 | 1/4-20x3/8 hex c/s 18-8 b18.2.1 | 3770 |
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| QFC | TX | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/8-16 x 3/8 | 3/8-16x3/8 hex c/s 18-8 b18.2.1 | 7 |
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| QFC | TX | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #8-32 x 3/8 | 8-32x3/8 hex c/s 18-8 b18.2.1 | 66 |
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| QFC | TX | Hex Head Cap Screw | Grade 2 | Zinc/Clear | 1/4-20 x 3/8 | 1/4-20x3/8 hex c/s gr2 zinc b18.2.1 | 2500 |
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| QFC | TX | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 1/4-20 x 3/8 | 1/4-20x3/8 hex c/s gr5 zinc b18.2.1 | 1000 |
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| Delta Secondary | IL | Hex Head Cap Screw | Grade 8 | Zinc/Yellow | 1/4-28 x 3/8 | 6000 |
| |
| B & K FAST | PA | Hex Head Cap Screw | Grade 8 | Zinc/Yellow | 1/4-20 x 3/8 | 1/4-20 x 3/8 hex cap screws gr 8 z yellow b18.2.1 | 443 |
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| B & K FAST | PA | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 3/8 | 1/4-20 x 3/8 hex cap screws 18-8 stainless b18.2.1 | 3210 |
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| TSF | TX | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 3/8 | hex cap screw 18-8 ss 5/16-18 x 3/8 | 75 |
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| ACF | CA | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 3/8 | 1/4-20x3/8 s/s hex head cap screw | 11460 |
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| ACF | CA | Hex Head Cap Screw | Grade 2 | Zinc/Yellow | 1/4-20 x 3/8 | 1/4-20x3/8 hex head cap screw gr2 zinc ii | 1700 |
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| ACF | CA | Hex Head Cap Screw | Grade 5 | Plain | 1/4-20 x 3/8 | 1/4-20x3/8 gr5 hex head cap screw plain thermal black | 465 |
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| ACF | CA | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 1/4-28 x 3/8 | 1/4-28x3/8 gr5 hex head cap screw z/p domestic | 9066 |
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| ACF | CA | Hex Head Cap Screw | Grade 8 | Zinc/Yellow | 1/4-20 x 3/8 | 1/4-20x3/8 hex head cap screw gr8 zinc ii domestic | 2070 |
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| ACF | CA | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 3/8 | 1/4-20x3/8 s/s hex hd cap screw | 2550 |
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| Wurth Ada | MN | Hex Head Cap Screw | Steel | Zinc/Clear | 1/4-20 x 3/8 | scr t/c/s type-f hexwhd-steel (zt) 1/4-20x3/8 | 15,800 |
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| Wurth Ada | MN | Hex Head Cap Screw | Grade 5 | Zinc/Yellow | 5/16-18 x 3/8 | scr hhcs grade 5 (zy) 5/16-18x3/8 | 7,075 |
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| Wurth Ada | MN | Hex Head Cap Screw | 316, 317, A4 Stainless | Plain | 1/4-20 x 3/8 | scr hhcs 316 1/4-20x3/8 | 1,433 |
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| Wurth Ada | MN | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 1/4-28 x 3/8 | scr hhcs grade 5 (zt) 1/4-28x3/8 | 3,300 |
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| Wurth Ada | MN | Hex Head Cap Screw | Steel | Zinc/Clear | #6-32 x 3/8 | scr t/c/s type-f hexwhd-steel (zt) 6-32x3/8 | 15,705 |
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| Wurth Ada | MN | Hex Head Cap Screw | Steel | Zinc/Clear | #8-32 x 3/8 | scr t/c/s type-23 hex steel (zn) #8-32x3/8 | 10,000 |
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| Wurth Ada | MN | Hex Head Cap Screw | Grade 5 | Zinc/Yellow | 1/4-20 x 3/8 | scr hhcs grade 5 (zy) 1/4-20x3/8 | 3,748 |
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| Wurth Ada | MN | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 3/8 | scr hhcs (18 8) 1/4-20x3/8 | 1,450 |
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| Wurth Ada | MN | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4-20 x 3/8 | scr hhcs (18 8) 1/4-20x3/8 | 500 |
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| THRDFAST | FL | Hex Head Cap Screw | Grade 2 | Zinc/Clear | 5/16-18 x 3/8 | gr2 hex c/s b18.2.1 | 1,096 |
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| THRDFAST | FL | Hex Head Cap Screw | Grade 2 | Zinc/Clear | 1/4-20 x 3/8 | gr2 hex c/s b18.2.1 | 376 |
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| THRDFAST | FL | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | #10-24 x 3/8 | 18-8 ss hex c/s b18.2.1 | 315 |
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| THRDFAST | FL | Hex Head Cap Screw | Brass | Plain | 1/4-20 x 3/8 | hex c/s b18.2.1 | 300 |
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| THRDFAST | FL | Hex Head Cap Screw | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 5/16-18 x 3/8 | 18-8 ss hex c/s b18.2.1 | 23 |
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| Hewes | NY | Hex Head Cap Screw | Grade 5 | Zinc/Clear | 1/4-20 x 3/8 | hhc plate w/ nylon patch | 785 |
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| Hewes | NY | Hex Head Cap Screw | Grade 5 | Plain | 5/16-18 x 3/8 | cap w/patch | 125 |
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| Davis | IL | Hex Head Cap Screw | Grade 2 | Zinc/Clear | 1/4-20 x 3/8 | 1/4-20 x 3/8 grade 2 hex cap screw-steel zinc b18.2.1 | 600 |
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