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3/8 Hex Cap Screws (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.

Hex Head Cap Screw (b18.2.1), showing 200, (click on any line for more information)

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SupplierLocTypeMaterialFinishSizeDescriptionQty 
AbabaCAHex Head Cap ScrewGrade 8Plain3/8-16 x 103/8-16 x 10 inch h/c gr 8 pln b18.2.16
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AbabaCAHex Head Cap ScrewGrade 5Plain3/8-16 x 13/8-16 x 1 h/c al-2000 (black) gr 5 b18.2.1333
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AbabaCAHex Head Cap ScrewGrade 5Zinc/Clear3/8-16 x 13/8-16 x 1 h/c gr 5 znc b18.2.12870
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AbabaCAHex Head Cap Screw316, 317, A4 StainlessPlain3/8-16 x 13/8-16 x 1 h/c 316 s/s b18.2.182
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AbabaCAHex Head Cap ScrewGrade 8Plain3/8-16 x 13/8-16 x 1 h/c dom gr 8 pln b18.2.1650
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AbabaCAHex Head Cap ScrewGrade 8Zinc/Yellow3/8-16 x 13/8-16 x 1 h/c dom gr 8 yel znc b18.2.11664
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AbabaCAHex Head Cap ScrewGrade 9Zinc/Yellow3/8-16 x 13/8-16 x 1 h/c gr.9 yel znc b18.2.123
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AbabaCAHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-16 x 13/8-16 x 1 h/c s/s b18.2.14350
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AbabaCAHex Head Cap ScrewGrade 5Zinc/Clear3/8-16 x 1 1/43/8-16 x 1 1/4 h/c gr 5 znc b18.2.15312
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AbabaCAHex Head Cap Screw316, 317, A4 StainlessPlain3/8-16 x 1 1/43/8-16 x 1 1/4 h/c 316 s/s b18.2.1838
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AbabaCAHex Head Cap ScrewGrade 8Zinc/Yellow3/8-16 x 1 1/43/8-16 x 1 1/4 h/c dom gr 8 yel znc b18.2.11259
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AbabaCAHex Head Cap ScrewGrade 9Zinc/Yellow3/8-16 x 1 1/43/8-16 x 1 1/4 h/c gr.9 yel znc b18.2.151
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AbabaCAHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-16 x 1 1/43/8-16 x 1 1/4 h/c s/s b18.2.11749
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AbabaCAHex Head Cap ScrewGrade 5Plain3/8-16 x 1 1/23/8-16 x 1 1/2 h/c al-2000 (black) gr 5 b18.2.1585
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AbabaCAHex Head Cap ScrewGrade 5Zinc/Black3/8-16 x 1 1/23/8-16 x 1 1/2 h/c gr 5 blk znc b18.2.1390
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AbabaCAHex Head Cap ScrewGrade 5Zinc/Clear3/8-16 x 1 1/23/8-16 x 1 1/2 h/c gr 5 znc b18.2.13570
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AbabaCAHex Head Cap Screw316, 317, A4 StainlessPlain3/8-16 x 1 1/23/8-16 x 1 1/2 h/c 316 s/s b18.2.148
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AbabaCAHex Head Cap ScrewGrade 8Zinc/Yellow3/8-16 x 1 1/23/8-16 x 1 1/2 h/c dom gr 8 yel znc b18.2.11374
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AbabaCAHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-16 x 1 1/23/8-16 x 1 1/2 h/c s/s b18.2.1983
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AbabaCAHex Head Cap Screw316, 317, A4 StainlessPlain3/8-16 x 1 11/163/8-16 x 1 11/16 h/c .470 thread length 316 s/s b18.2.120293
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SIIINHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-16 x 23/8-16x2 18-8 s/s steel hex cap screw) b18.2.1117
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SIIINHex Head Cap ScrewGrade 8Zinc/Yellow3/8-16 x 43/8-16x4 grd8 yz hex cap screw) b18.2.1220
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SIIINHex Head Cap ScrewGrade 2Zinc/Clear3/8-16 x 63/8-16x6 grd2 hex cap screw/zinc) b18.2.1100
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B & K FASTPAHex Head Cap ScrewAluminumPlain3/8-16 x 33/8-16 x 3 hex cap screws aluminum b18.2.16
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B & K FASTPAHex Head Cap ScrewBrassPlain3/8-16 x 1 1/23/8-16 x 1 1/2 hex cap screws brass b18.2.11
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B & K FASTPAHex Head Cap ScrewGrade 8Zinc/Clear3/8-24 x 3 1/23/8-24 x 3 1/2 hex cap screws gr 8 zinc b18.2.110
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B & K FASTPAHex Head Cap ScrewGrade 2Plain3/8-24 x 43/8-24 x 4 hex cap screws gr 2 plain b18.2.17
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B & K FASTPAHex Head Cap ScrewGrade 5Zinc/Clear3/8-24 x 4 1/43/8-24 x 4 1/4 hex cap screws gr 5 zinc b18.2.121
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B & K FASTPAHex Head Cap ScrewGrade 2Plain3/8-24 x 53/8-24 x 5 hex cap screws gr 2 plain b18.2.120
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B & K FASTPAHex Head Cap ScrewGrade 8Plain3/8-24 x 53/8-24 x 5 hex cap screws gr 8 plain b18.2.125
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B & K FASTPAHex Head Cap ScrewGrade 8Zinc/Yellow3/8-24 x 5 3/43/8-24 x 5 3/4 hex cap screws gr 8 z yellow b18.2.12
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B & K FASTPAHex Head Cap ScrewGrade 8Plain3/8-24 x 6 1/23/8-24 x 6 1/2 hex cap screws gr 8 plain b18.2.131
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B & K FASTPAHex Head Cap ScrewGrade 8Plain3/8-24 x 73/8-24 x 7 hex cap screws gr 8 plain b18.2.11
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B & K FASTPAHex Head Cap ScrewGrade 8Zinc/Yellow3/8-24 x 73/8-24 x 7 hex cap screws gr 8 z yellow b18.2.120
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B & K FASTPAHex Head Cap ScrewGrade 5Zinc/Clear3/8-24 x 7 1/23/8-24 x 7 1/2 hex cap screws gr 5 zinc b18.2.11
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B & K FASTPAHex Head Cap ScrewGrade 8Zinc/Yellow3/8-24 x 7 1/23/8-24 x 7 1/2 hex cap screws gr 8 z yellow b18.2.11
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B & K FASTPAHex Head Cap ScrewGrade 5Plain3/8-24 x 83/8-24 x 8 hex cap screws gr 5 plain b18.2.113
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