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Hex Cap Screws, Black Oxide (ASME B18. 2.1)

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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SupplierLocTypeMaterialFinishSizeDescriptionQty 
Irwin IndOntHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Black Oxide4 x 5/164x5/16 ind hex wsh slotted ty 25 t/c/s 18.8 s/s b/o b18.2.111200
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AbabaCAHex Head Cap ScrewSteelBlack Oxide1/4-20 x 1 1/41/4-20 x 1 1/4 h/c black nylon b18.2.11500
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AbabaCAHex Head Cap ScrewGrade 5Black Oxide1/4-20 x 5/81/4-20 x 5/8 h/c gr 5 blk ox wax b18.2.1419
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AbabaCAHex Head Cap ScrewGrade 5Black Oxide1/2-13 x 11/2-13 x 1 h/c black luster gr 5 b18.2.160
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Alma BoltMIHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Black Oxide1/4-20 x 7/81/4-20 X 7/8 BLACK OXIDE ST ST HCS 18-8 b18.2.11058
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EximS'poreHex Head Cap ScrewSteelBlack Oxide#10-24 x 1/2screw hex c/s headsteel black oxide# 10-24 x 1/2 in b18.2.154
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EximS'poreHex Head Cap ScrewSteelBlack Oxide#10-24 x 5/16screw hex c/s headsteel black oxide# 10-24 x 5/16 in b18.2.15480
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EximS'poreHex Head Cap ScrewSteelBlack Oxidescrew hex c/s washer headsteel hardened black oxide unc 2a#6-19 x 3/4 in p-tite b18.2.12325
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EximS'poreHex Head Cap ScrewSteelBlack Oxide10 x 3/4screw hex c/s headsteel hardened black oxide# 10 x 3/4 in. b18.2.151000
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JET FITTINGCAHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Black Oxide3/8-16 x 3/43/8-16x3/4 hex cap screw stainless steel 18-8 black oxide 616C12HCS SSBO b18.2.12215
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JET FITTINGCAHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Black Oxide1/4-20 x 11/4-20x1 hex cap screw stainless steel 18-8 black oxide 416C16HCS SSBO b18.2.11487
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JET FITTINGCAHex Head Cap ScrewGrade 2Black Oxide1/4-20 x 3/41/4-20x3/4 hex cap screw steel grade 2 black oxide 416C12HCSG2 SBO b18.2.150
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JET FITTINGCAHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Black Oxide3/8-16 x 1 1/23/8-16x1-1/2 hex cap screw stainless steel 18-8 black oxide 616C24HCS SSBO b18.2.117
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JET FITTINGCAHex Head Cap ScrewGrade 5Black Oxide3/8-16 x 2 1/43/8-16x2-1/4 hex cap screw steel grade 5 black oxide 616C36HCSG5 BO b18.2.1500
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JET FITTINGCAHex Head Cap ScrewGrade 2Black Oxide3/8-16 x 33/8-16x3 hex cap screw steel grade 2 black oxide 3748CH2B b18.2.1129
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JET FITTINGCAHex Head Cap ScrewGrade 2Black Oxide5/16-18 x 2 1/45/16-18x2 1/4 hhcs gr2 stl blk ox 3136CH2B b18.2.1500
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JET FITTINGCAHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Black Oxide3/8-16 x 13/8-16x1 hex cap screw stainless steel 18-8 black oxide 616C16HCS SSBO b18.2.137
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JET FITTINGCAHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Black Oxide3/8-16 x 1 1/43/8-16x1-1/4 (ft) hex cap screw stainles steel 18-8 black oxide and wax b18.2.1500
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JET FITTINGCAHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Black Oxide3/8-16 x 7/83/8-16x7/8 hex cap screw stainless steel 18-8 black oxide 616C14HCS SSBO b18.2.11500
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General FMIHex Head Cap ScrewSteelBlack Oxide5/165/16 hex dome cap blk polyethylene b18.2.14821
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OSSCORIHex Head Cap ScrewSteelBlack Oxide1/2-13 x 1 3/41/2-13x1 3/4 hex cap screw black ox b18.2.1381
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OSSCORIHex Head Cap ScrewSteelBlack Oxide1/2-13 x 41/2-13x4 hex cap screw black ox b18.2.199
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QFCTXHex Head Cap ScrewGrade 5Black Oxide1/2-13 x 1 3/41/2-13 x 1 3/4 hex cap gr5 blk oxide ft b18.2.15
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QFCTXHex Head Cap ScrewSteelBlack Oxide1/2-13 x 11/2-13x1 hex c/s black nylon b18.2.12900
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JET FITTINGCAHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Black Oxide5/16-18 x 1 1/45/16-18x1-1/4 hex cap screw stainless steel black oxide b18.2.1510
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JET FITTINGCAHex Head Cap ScrewGrade 2Black Oxide5/16-18 x 2 1/45/16-18x2 1/4 hex cap screws grade 2 black oxide quantity 600 b18.2.1500
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JET FITTINGCAHex Head Cap ScrewGrade 2Black Oxide3/8-16 x 2 1/23/8-16x2 1/2 hex cap screws grade 2 black oxide quantity 400 b18.2.150
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WSBKYHex Head Cap ScrewGrade 2Black Oxide3/8-16 x 3 1/2screw hcs gr2 (bo) 3/8-16x3 1/2 b18.2.152,441
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WSBKYHex Head Cap ScrewGrade 2Black Oxide3/8-16 x 4 1/2screw hcs gr2 (bo) 3/8-16x4 1/2 b18.2.113,577
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WSBKYHex Head Cap ScrewGrade 2Black Oxide1/4-20 x 3 1/4screw hcs gr2 (bo) 1/4-20x3 1/4 b18.2.114,400
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WSBKYHex Head Cap ScrewGrade 2Black Oxide1/4-20 x 2 1/2screw hcs gr2 (bo) 1/4-20x2 1/2 b18.2.1127,909
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WSBKYHex Head Cap ScrewGrade 5Black Oxide1/4-20 x 5/8screw hcs gr5 (bo) 1/4-20x5/8 b18.2.1185,390
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DavisILHex Head Cap ScrewGrade 2Black Oxide1/4-20 x 1/21/4-20 x 1/2 grade 2 hex cap screw-steel black oxide b18.2.12,800
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DavisILHex Head Cap ScrewGrade 2Black Oxide3/8-16 x 2 1/43/8-16 x 2-1/4 grade 2 hex cap screw-steel black oxide b18.2.1350
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DavisILHex Head Cap ScrewGrade 5Black Oxide5/16-18 x 25/16-18 x 2 grade 5 hex cap screw-steel black oxide fully threaded b18.2.1140
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FACCAOntHex Head Cap ScrewGrade 2Black Oxide7/16-14 x 2hex head cap screw 7/16-14 unc x 2 lg grade 2 black finish b18.2.1401
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