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3/4 inch length 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 5Plain1/4-20 x 3/41/4-20 x 3/4 h/c al-2000 (black) gr 5 b18.2.1395
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AbabaCAHex Head Cap ScrewGrade 5Zinc/Clear1/4-20 x 3/41/4-20 x 3/4 h/c gr 5 znc b18.2.13822
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AbabaCAHex Head Cap Screw316, 317, A4 StainlessPlain1/4-20 x 3/41/4-20 x 3/4 h/c 316 s/s b18.2.11110
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AbabaCAHex Head Cap ScrewGrade 9Zinc/Yellow1/4-20 x 3/41/4-20 x 3/4 h/c gr.9 yel znc b18.2.1200
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AbabaCAHex Head Cap ScrewAluminumPlain1/4-20 x 3/41/4-20 x 3/4 h/c alum b18.2.124
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AbabaCAHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 3/41/4-20 x 3/4 h/c s/s b18.2.12500
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AbabaCAHex Head Cap ScrewGrade 5Zinc/Clear1/4-28 x 3/41/4-28 x 3/4 h/c gr 5 znc b18.2.11845
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AbabaCAHex Head Cap ScrewGrade 8Zinc/Yellow1/4-28 x 3/41/4-28 x 3/4 h/c dom gr 8 yel znc b18.2.1836
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AbabaCAHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-28 x 3/41/4-28 x 3/4 h/c s/s b18.2.1131
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AbabaCAHex Head Cap ScrewGrade 5Zinc/Clear5/16-18 x 3/45/16-18 x 3/4 h/c gr 5 znc b18.2.16400
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AbabaCAHex Head Cap Screw316, 317, A4 StainlessPlain5/16-18 x 3/45/16-18 x 3/4 h/c 316 s/s b18.2.1122
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AbabaCAHex Head Cap ScrewGrade 8Zinc/Yellow5/16-18 x 3/45/16-18 x 3/4 h/c dom gr 8 yel znc b18.2.1375
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AbabaCAHex Head Cap ScrewGrade 9Zinc/Yellow5/16-18 x 3/45/16-18 x 3/4 h/c gr.9 yel znc b18.2.1180
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AbabaCAHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 3/45/16-18 x 3/4 h/c s/s b18.2.12625
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AbabaCAHex Head Cap ScrewGrade 5Zinc/Clear5/16-24 x 3/45/16-24 x 3/4 h/c gr 5 znc b18.2.1805
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AbabaCAHex Head Cap ScrewGrade 8Zinc/Yellow5/16-24 x 3/45/16-24 x 3/4 h/c dom gr 8 yel znc b18.2.11600
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AbabaCAHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-24 x 3/45/16-24 x 3/4 h/c s/s b18.2.13
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AbabaCAHex Head Cap ScrewGrade 5Zinc/Clear3/8-16 x 3/43/8-16 x 3/4 h/c gr 5 znc b18.2.12394
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AbabaCAHex Head Cap Screw316, 317, A4 StainlessPlain3/8-16 x 3/43/8-16 x 3/4 h/c 316 s/s b18.2.1547
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AbabaCAHex Head Cap ScrewGrade 8Zinc/Yellow3/8-16 x 3/43/8-16 x 3/4 h/c dom gr 8 yel znc b18.2.11104
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ASMCILHex Head Cap ScrewGrade 5Plain5/16-18 x 3/45/16-18x3/4 (ft) coarse gr5 hex cap screw med carb pln b18.2.11,650
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ASMCILHex Head Cap ScrewGrade 5Plain5/16-24 x 3/45/16-24x3/4 (ft) fine gr5 hex c/s -usa med carb b18.2.1478
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AbabaCAHex Head Cap ScrewGrade 5Zinc/Clear1/4-20 x 3/41/4-20 x 3/4 h/c gr 5 znc b18.2.1100
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AbabaCAHex Head Cap ScrewGrade 5Zinc/Clear1/4-20 x 3/41/4-20 x 3/4 h/c dom gr 5 znc b18.2.1300
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AbabaCAHex Head Cap ScrewGrade 8Zinc/Yellow1/4-20 x 3/41/4-20 x 3/4 h/c dom gr 8 yel znc b18.2.12061
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AbabaCAHex Head Cap ScrewGrade 8Zinc/Yellow1/4-20 x 3/41/4-20 x 3/4 h/c dom gr 8 yel znc b18.2.1600
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AbabaCAHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 3/41/4-20 x 3/4 h/c s/s b18.2.1800
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AbabaCAHex Head Cap ScrewGrade 5Zinc/Clear1/4-28 x 3/41/4-28 x 3/4 h/c gr 5 znc b18.2.1200
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AbabaCAHex Head Cap ScrewGrade 8Zinc/Yellow1/4-28 x 3/41/4-28 x 3/4 h/c dom gr 8 yel znc b18.2.1200
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AbabaCAHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-28 x 3/41/4-28 x 3/4 h/c s/s b18.2.150
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AbabaCAHex Head Cap ScrewGrade 5Zinc/Clear5/16-18 x 3/45/16-18 x 3/4 h/c gr 5 znc b18.2.1300
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AbabaCAHex Head Cap ScrewGrade 8Zinc/Yellow5/16-18 x 3/45/16-18 x 3/4 h/c dom gr 8 yel znc b18.2.1400
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AbabaCAHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 3/45/16-18 x 3/4 h/c s/s b18.2.1500
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AbabaCAHex Head Cap ScrewGrade 8Zinc/Yellow5/16-24 x 3/45/16-24 x 3/4 h/c dom gr 8 yel znc b18.2.1100
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AbabaCAHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-24 x 3/45/16-24 x 3/4 h/c s/s b18.2.150
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AbabaCAHex Head Cap ScrewGrade 8Zinc/Yellow3/8-16 x 3/43/8-16 x 3/4 h/c dom gr 8 yel znc b18.2.1350
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AbabaCAHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-16 x 3/43/8-16 x 3/4 h/c s/s b18.2.1200
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AbabaCAHex Head Cap ScrewGrade 8Zinc/Yellow7/16-14 x 3/47/16-14 x 3/4 h/c dom gr 8 yel znc b18.2.1150
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AbabaCAHex Head Cap ScrewGrade 8Zinc/Yellow7/16-20 x 3/47/16-20 x 3/4 h/c dom gr 8 yel znc b18.2.1595
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AbabaCAHex Head Cap ScrewGrade 8Zinc/Yellow7/16-20 x 3/47/16-20 x 3/4 h/c dom gr 8 yel znc b18.2.125
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AbabaCAHex Head Cap ScrewGrade 8Zinc/Yellow1/2-13 x 3/41/2-13 x 3/4 h/c dom gr 8 yel znc b18.2.150
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AbabaCAHex Head Cap ScrewGrade 8Zinc/Yellow1/2-20 x 3/41/2-20 x 3/4 h/c dom gr 8 yel znc b18.2.150
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SIIINHex Head Cap ScrewGrade 8Zinc/Yellow1/4-20 x 3/41/4-20 x 3/4 grd8 yellow zinc hex cap screw) b18.2.1562
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SIIINHex Head Cap ScrewGrade 2Zinc/Clear1/4-20 x 3/41/4-20 x 3/4 g2 zinc hex cap screw b18.2.14868
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SIIINHex Head Cap ScrewGrade 8Zinc/Yellow5/16-24 x 3/45/16-24 x 3/4 grd8 yellow zinc hex cap screw) b18.2.11330
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SIIINHex Head Cap ScrewGrade 5Zinc/Clear3/8-16 x 3/43/8-16 x 3/4 grd5 zinc hex cap screw usa) b18.2.11006
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SIIINHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 3/41/4-20 x 3/4 18-8 stainless steel hex cap screw) b18.2.1800
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SIIINHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-16 x 3/43/8-16x3/4 (ft) unc hex cap screws coarse stain a2 (18-8) b18.2.125
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QFCTXHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 3/41/4-20x3/4 hex cap screw 18-8 304 steel domestic b18.2.1904
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QFCTXHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 3/41/4-20x3/4 hex cap screw 18-8 304 steel domestic b18.2.1325
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QFCTXHex Head Cap ScrewGrade 2Zinc/Clear1/4-28 x 3/41/4-28x3/4 hex cap screw grade 2 zinc b18.2.11870
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QFCTXHex Head Cap ScrewGrade 2Zinc/Clear1/4-28 x 3/41/4-28x3/4 hex cap screw grade 2 zinc b18.2.11868
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QFCTXHex Head Cap ScrewGrade 5Zinc/Clear1/4-28 x 3/41/4-28x3/4 hex cap screw grade 5 zinc b18.2.1800
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QFCTXHex Head Cap ScrewGrade 5Plain5/16-18 x 3/45/16-18x3/4 hex cap screw grade 5 b18.2.13282
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QFCTXHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 3/45/16-18x3/4 hex cap screw 304 s/s domestic b18.2.183
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QFCTXHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 3/45/16-18x3/4 hcs s/s w/drilled head b18.2.11411
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QFCTXHex Head Cap ScrewGrade 5Plain5/16-24 x 3/45/16-24x3/4 hhcs grade 5 plain b18.2.12096
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QFCTXHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 3/41/2-13x3/4 hex cap screw ss domestic b18.2.11463
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QFCTXHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 3/41/2-13x3/4 hex cap screw ss domestic b18.2.1275
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QFCTXHex Head Cap ScrewBrassPlain1/2-13 x 3/41/2-13x3/4 hex c/s brass b18.2.1200
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QFCTXHex Head Cap ScrewBrassPlain1/2-13 x 3/41/2-13x3/4 hex c/s brass b18.2.1610
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QFCTXHex Head Cap ScrewGrade AGalvanized1/2-13 x 3/41/2-13x3/4 hex c/s a307 hdg 100% domestic b18.2.1650
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QFCTXHex Head Cap ScrewGrade AGalvanized1/2-13 x 3/41/2-13x3/4 hex c/s a307 hdg 100% domestic b18.2.1399
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QFCTXHex Head Cap ScrewGrade AGalvanized1/2-13 x 3/41/2-13x3/4 hex c/s a307 hdg 100% domestic b18.2.11414
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QFCTXHex Head Cap ScrewGrade AGalvanized1/2-13 x 3/41/2-13x3/4 hex c/s a307 hdg 100% domestic b18.2.16009
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QFCTXHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 3/41/4-20x3/4 hex c/s 304 s/s domestic b18.2.1432
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QFCTXHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 3/41/4-20x3/4 hex c/s 304 s/s domestic b18.2.1283
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QFCTXHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 3/41/4-20x3/4 hex c/s 304 s/s domestic b18.2.1452
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B & K FASTPAHex Head Cap ScrewSilicon BronzePainted1/2-13 x 3/41/2-13 x 3/4 hex cap screws sil bronze b18.2.112
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B & K FASTPAHex Head Cap ScrewGrade 2Plain7/16-14 x 3/47/16-14 x 3/4 hex cap screws gr 2 plain b18.2.141
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B & K FASTPAHex Head Cap ScrewGrade 2Zinc/Clear7/16-14 x 3/47/16-14 x 3/4 hex cap screws gr 2 zinc b18.2.161
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B & K FASTPAHex Head Cap ScrewGrade 2Zinc/Yellow7/16-20 x 3/47/16-20 x 3/4 hex cap screws gr 2 z yellow b18.2.115
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B & K FASTPAHex Head Cap ScrewGrade 9Zinc/Clear7/16-20 x 3/47/16-20 x 3/4 hex cap screws gr 9 (mc12) zinc b18.2.123
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B & K FASTPAHex Head Cap ScrewGrade 5Zinc/Clear1/2-20 x 3/41/2-20 x 3/4 hex cap screws gr 5 zinc b18.2.13022
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B & K FASTPAHex Head Cap ScrewGrade 8Plain1/2-20 x 3/41/2-20 x 3/4 hex cap screws gr 8 plain b18.2.1100
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B & K FASTPAHex Head Cap ScrewGrade 5Zinc/Clear3/4-16 x 3/43/4-16 x 3/4 hex cap screws gr 5 zinc b18.2.11
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B & K FASTPAHex Head Cap ScrewBrassPlain1/4-20 x 3/41/4-20 x 3/4 hex cap screws brass b18.2.11606
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B & K FASTPAHex Head Cap ScrewSilicon BronzePainted1/4-20 x 3/41/4-20 x 3/4 hex cap screws sil bronze b18.2.1300
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B & K FASTPAHex Head Cap ScrewSilicon BronzePainted5/16-18 x 3/45/16-18 x 3/4 hex cap screws sil bronze b18.2.1187
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B & K FASTPAHex Head Cap ScrewBrassPlain3/8-16 x 3/43/8-16 x 3/4 hex cap screws brass b18.2.1209
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B & K FASTPAHex Head Cap ScrewGrade 2Zinc/Clear1/4-20 x 3/41/4-20 x 3/4 hex cap screws gr 2 zinc b18.2.11798
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B & K FASTPAHex Head Cap ScrewGrade 5Plain1/4-20 x 3/41/4-20 x 3/4 hex cap screws gr 5 plain b18.2.18363
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B & K FASTPAHex Head Cap ScrewGrade 5Zinc/Clear1/4-20 x 3/41/4-20 x 3/4 hex cap screws gr 5 zinc b18.2.13066
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B & K FASTPAHex Head Cap ScrewGrade 8Zinc/Yellow1/4-20 x 3/41/4-20 x 3/4 hex cap screws gr 8 z yellow b18.2.11651
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B & K FASTPAHex Head Cap ScrewGrade 5Zinc/Yellow1/4-28 x 3/41/4-28 x 3/4 hex cap screws gr 5 z yellow b18.2.11633
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B & K FASTPAHex Head Cap ScrewGrade 5Zinc/Clear5/16-18 x 3/45/16-18 x 3/4 hex cap screws gr 5 zinc b18.2.12082
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B & K FASTPAHex Head Cap ScrewGrade 8Zinc/Yellow5/16-18 x 3/45/16-18 x 3/4 hex cap screws gr 8 z yellow b18.2.14351
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B & K FASTPAHex Head Cap ScrewGrade 8Zinc/Yellow5/16-24 x 3/45/16-24 x 3/4 hex cap screws gr 8 z yellow b18.2.110010
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Marine FastenersFLHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-20 x 3/41/2-20x3/4 hex hd cs ss f593c b18.2.112200
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Marine FastenersFLHex Head Cap ScrewSilicon BronzePlain1/2-13 x 3/41/2-13x3/4 hex hd c/s sil brz b18.2.11728
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Marine FastenersFLHex Head Cap ScrewSilicon BronzeZinc/Black1/4-20 x 3/41/4-20x3/4 hex hd cs sil bz b18.2.18608
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Marine FastenersFLHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain7/16-20 x 3/47/16-20x3/4 hex hd cs ss f593c b18.2.18785
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Marine FastenersFLHex Head Cap Screw316, 317, A4 StainlessPlain7/16-14 x 3/47/16-14x3/4 hex head cs 316ss 316ss b18.2.15100
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Marine FastenersFLHex Head Cap Screw316, 317, A4 StainlessPlain1/4-20 x 3/41/4-20x3/4 hex head cs 316ss 100 per box 316ss b18.2.1106
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Marine FastenersFLHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/8-18 x 3/45/8-18x3/4 hex hd cs 18-8 f593c b18.2.11150
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Marine FastenersFLHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#10-32 x 3/410-32x3/4 hex head cap screw 18-8 ss 100 per small bag 5 small bags per master pack-generic brand b18.2.110000
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Marine FastenersFLHex Head Cap Screw316, 317, A4 StainlessPlain1/4-20 x 3/41/4-20x3/4 hex head cap screw 316 ss 100 per small bag 5 small bags per master pack-generic brand 316ss b18.2.15000
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Marine FastenersFLHex Head Cap Screw316, 317, A4 StainlessPlain5/16-18 x 3/45/16-18x3/4 hex head cap screw 316 ss 25 per small bag 5 small bags per master pack-generic brand 316ss b18.2.13000
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Marine FastenersFLHex Head Cap Screw316, 317, A4 StainlessPlain3/8-16 x 3/43/8-16x3/4 hex head cap screw 316 ss 25 per small bag 5 small bags per master pack-generic brand 316ss b18.2.12000
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JET FITTINGCAHex Head Cap ScrewGrade 2Zinc/Clear5/16-18 x 3/45/16-18x3/4 hex cap screw steel grade-2 zinc plated b18.2.1700
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JET FITTINGCAHex Head Cap ScrewGrade 8Zinc/Yellow5/16-18 x 3/45/16-18x3/4 (ft) hex cap screw steel grade-8 zinc plated yellow b18.2.1175
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JET FITTINGCAHex Head Cap ScrewGrade 5Zinc/Clear3/8-16 x 3/43/8-16x3/4 hex cap screw steel grade-5 zinc plated b18.2.1500
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JET FITTINGCAHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 3/41/4-20x3/4 (ft) hex cap screw stainless steel 18-8 b18.2.11410
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