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1 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.

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BIG BOLTILHex Head Cap ScrewGrade 8Plain1 3/8-12 x 4bolt & c/s hex str/b (a325 a490 ) 1/2b18.2.1650
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BIG BOLTILHex Head Cap ScrewGrade 5Plain1 3/8-6 x 12bolt & c/s hex str/b (a325 a490 )square b18.2.1106
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BIG BOLTILHex Head Cap ScrewGrade 5Plain1 3/8-6 x 4bolt & c/s hex str/b (a325 a490 )square b18.2.1114
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BIG BOLTILHex Head Cap ScrewGrade 5Plain1 3/8-6 x 8bolt & c/s hex str/b (a325 a490 )square b18.2.146
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BIG BOLTILHex Head Cap ScrewGrade 5Plain1 3/8-6 x 6bolt & c/s hex str/b (a325 a490 )square b18.2.1106
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XL ScrewGAHex Head Cap ScrewGrade 8Plain1 3/8-6 x 5hex c/s SAE j429 asme b18.2.115
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XL ScrewGAHex Head Cap ScrewGrade 8Plain1 3/8-6 x 5 1/2hex c/s SAE j429 asme b18.2.115
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B & K FASTPAHex Head Cap ScrewGrade 5Plain1 3/8-6 x 31 3/8-6 x 3 hex cap screws gr 5 plain b18.2.111
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B & K FASTPAHex Head Cap ScrewGrade 2Plain1 3/8-6 x 3 1/41 3/8-6 x 3 1/4 hex cap screws gr 2 plain b18.2.13
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B & K FASTPAHex Head Cap ScrewGrade 2Plain1 3/8-6 x 3 1/21 3/8-6 x 3 1/2 hex cap screws gr 2 plain b18.2.19
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B & K FASTPAHex Head Cap ScrewGrade 5Plain1 3/8-6 x 3 1/21 3/8-6 x 3 1/2 hex cap screws gr 5 plain b18.2.14
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B & K FASTPAHex Head Cap ScrewGrade 5Plain1 3/8-6 x 51 3/8-6 x 5 hex cap screws gr 5 plain b18.2.12
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B & K FASTPAHex Head Cap ScrewGrade 5Plain1 3/8-6 x 5 11 3/8-6 x 5 3/8 hex cap screws gr 5 plain w/1 3/4 thread b18.2.138
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B & K FASTPAHex Head Cap ScrewGrade 2Plain1 3/8-6 x 5 1/21 3/8-6 x 5 1/2 hex cap screws gr 2 plain b18.2.16
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B & K FASTPAHex Head Cap ScrewGrade 2Plain1 3/8-6 x 6 1/41 3/8-6 x 6 1/4 hex cap screws gr 2 plain b18.2.122
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B & K FASTPAHex Head Cap ScrewGrade 8Plain1 3/8-6 x 9 1/21 3/8-6 x 9 1/2 hex cap screws gr 8 plain b18.2.15
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B & K FASTPAHex Head Cap ScrewGrade 8Zinc/Yellow1 3/8-12 x 81 3/8-12 x 8 hex cap screws gr 8 z yellow b18.2.110
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B & K FASTPAHex Head Cap ScrewGrade 8Plain1 3/8-6 x 61 3/8-6x6 hex cap screws grade 8 plain b18.2.12
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B & K FASTPAHex Head Cap ScrewGrade 2Plain1 3/8-6 x 21 3/8-6 x 2 hex cap screw gr 2 plain b18.2.112
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B & K FASTPAHex Head Cap ScrewGrade 8Plain1 3/8-6 x 51 3/8-6 x 5 hex cap screws gr.8 b18.2.14
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B & K FASTPAHex Head Cap ScrewGrade 8Plain1 3/8-6 x 6 1/21 3/8-6 x 6 1/2 hex cap screws gr 8 plain b18.2.12
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B & K FASTPAHex Head Cap ScrewGrade 8Plain1 3/8-6 x 101 3/8-6 x 10 hex cap screws gr 8 plain b18.2.126
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B & K FASTPAHex Head Cap ScrewGrade 5Plain1 3/8-6 x 121 3/8-6 x 12 hex cap screws gr 5 plain b18.2.14
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B & K FASTPAHex Head Cap ScrewGrade 8Plain1 3/8-6 x 121 3/8-6 x 12 hex cap screws gr 8 plain b18.2.14
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B & K FASTPAHex Head Cap ScrewGrade 8Zinc/Yellow1 3/8-12 x 8 x 51 3/8-12 x 8 hex cap screws gr 8 x 5 thread z yellow b18.2.13
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B & K FASTPAHex Head Cap ScrewGrade 8Plain1 3/8-12 x 9 1/21 3/8-12 x 9 1/2 unf-3a hex cap screws gr 8 plain 5 thread with 30 deg chamfer b18.2.11
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OSSCORIHex Head Cap ScrewGrade 8Plain1 3/8-6 x 51 3/8-6x5 hex cap screw grade 8 b18.2.14
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THRDFASTFLHex Head Cap ScrewGrade 8Plain1 3/8-6 x 5gr8 hex c/s b18.2.13
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THRDFASTFLHex Head Cap ScrewGrade 5Plain1 3/8-6 x 8gr5 hex c/s b18.2.12
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THRDFASTFLHex Head Cap ScrewGrade 5Plain1 3/8-6 x 4gr5 hex c/s b18.2.12
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THRDFASTFLHex Head Cap ScrewGrade 5Plain1 3/8-6 x 5gr5 hex c/s b18.2.11
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THRDFASTFLHex Head Cap ScrewGrade 8Plain1 3/8nf-12x6 gr8 hex c/s b18.2.110
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THRDFASTFLHex Head Cap ScrewGrade 8Plain1 3/8nf-12x12 gr8 hex c/s b18.2.14
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THRDFASTFLHex Head Cap ScrewGrade 8Plain1 3/8-6 x 5gr8 hex c/s b18.2.12
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THRDFASTFLHex Head Cap ScrewGrade 8Plain1 3/8-6 x 5 1/2gr8 hex c/s b18.2.16
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THRDFASTFLHex Head Cap ScrewGrade 5Plain1 3/8-6 x 4 1/2gr5 hex c/s b18.2.16
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THRDFASTFLHex Head Cap ScrewGrade 8Plain1 3/8-6 x 8gr8 hex c/s b18.2.14
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THRDFASTFLHex Head Cap ScrewGrade 8Plain1 3/8-6 x 12gr8 hex c/s b18.2.12
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THRDFASTFLHex Head Cap ScrewGrade 8Plain1 3/8-6 x 14gr8 hex c/s b18.2.11
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THRDFASTALHex Head Cap ScrewGrade 8Plain1 3/8-6 x 4gr8 hex c/s b18.2.115
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KBSTNHex Head Cap ScrewGrade 8Plain1 3/8-12 x 41 3/8-12 x 4 1/2 hex cap/s alloy gr-8 b18.2.116
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THRDFASTFLHex Head Cap ScrewGrade 8Plain1 3/8-6 x 4gr8 hex c/s b18.2.14
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THRDFASTFLHex Head Cap Screw316, 317, A4 StainlessPlain1 3/8-6 x 4t-316 ss hex c/s b18.2.12
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THRDFASTOKHex Head Cap ScrewGrade 8Zinc/Yellow1 3/8-6 x 6gr8 hex c/s b18.2.1 domestic26
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THRDFASTOKHex Head Cap ScrewGrade 5Zinc/Clear1 3/8-6 x 9gr5 hex c/s b18.2.11
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THRDFASTALHex Head Cap Screw316, 317, A4 StainlessPlain1 3/8-6 x 3t-316 ss hex c/s b18.2.16
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THRDFASTFLHex Head Cap ScrewGrade 8Plain1 3/8-6 x 5gr8 hex c/s b18.2.12
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THRDFASTALHex Head Cap ScrewGrade 5Plain1 3/8-6 x 5 1/2gr5 hex c/s b18.2.18
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THRDFASTALHex Head Cap ScrewGrade 5Plain1 3/8-6 x 4 1/2gr5 hex c/s b18.2.11
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