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3/8 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.

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SupplierLocTypeMaterialFinishSizeDescriptionQty 
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GLFOHHex Head Cap ScrewGrade 5Zinc/Clear1/4-20 x 3/81/4-20x3/8 hhcs grade 5 stl zc b18.2.1 () () ()5862,000
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GLFOHHex Head Cap ScrewGrade 8Zinc/Yellow1/4-20 x 3/81/4-20x3/8 hex cap-full thread-grade 8-zinc yellow-cr6 b18.2.1 () () ()1811,000
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GLFOHHex Head Cap ScrewGrade 5Zinc/Clear5/16-18 x 3/85/16-18x3/8 hhcs grade 5 stl zc b18.2.1 () () ()200,000
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Irwin IndOntHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 3/81/4-20x3/8 hex hd cap screw 18-8 304 steel b18.2.15000
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AbabaCAHex Head Cap ScrewGrade 5Zinc/Clear1/4-20 x 3/81/4-20 x 3/8 h/c gr 5 znc b18.2.1400
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AbabaCAHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 3/81/4-20 x 3/8 h/c s/s b18.2.1765
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AbabaCAHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-28 x 3/81/4-28 x 3/8 h/c s/s b18.2.1241
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AbabaCAHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 3/85/16-18 x 3/8 h/c s/s b18.2.1125
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AbabaCAHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 3/81/4-20 x 3/8 h/c s/s b18.2.1200
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Field FasILHex Head Cap ScrewGrade 5Zinc/Clear5/16-18 x 3/85/16-18x3/8 hex cap screw grade 5 zc manufactured to asme b18.2.1 and sae j429 specifications4,000
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XL ScrewGAHex Head Cap ScrewGrade 5Zinc/Clear1/4-20 x 3/8hex c/s SAE j429 zp asme b18.2.14,000
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XL ScrewGAHex Head Cap ScrewGrade 5Zinc/Clear5/16-18 x 3/8hex c/s SAE j429 zp asme b18.2.12,500
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EximS'poreHex Head Cap ScrewBrassNickel Plated#8-32 x 3/8screw hex c/s headbrass nickel# 8-32 x 3/8 in b18.2.19777
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EximS'poreHex Head Cap ScrewSteelZinc/Clear#8-32 x 3/8screw hex c/s headsteel clear zn#8-32 x 3/8 in b18.2.141421
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EximS'poreHex Head Cap ScrewSteelZinc/Clear#10-32 x 3/8screw hex c/s headsteel clear zinc# 10-32 x 3/8 in b18.2.12849
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EximS'poreHex Head Cap ScrewSteelZinc/Clear#1/4-20 x 3/8screw hex c/s head (large head)steel blue zn#1/4-20 x 3/8 in ansi std b18.2.15466
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EximS'poreHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Passivated#1/4-20 x 3/8screw hex c/s heads/s passivated# 1/4-20 x 3/8 in b18.2.12134
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QFCTXHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 3/81/4-20x3/8 hex c/s 18-8 b18.2.1163
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QFCTXHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 3/81/4-20x3/8 hex c/s 18-8 b18.2.13770
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QFCTXHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-16 x 3/83/8-16x3/8 hex c/s 18-8 b18.2.17
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QFCTXHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#8-32 x 3/88-32x3/8 hex c/s 18-8 b18.2.166
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QFCTXHex Head Cap ScrewGrade 2Zinc/Clear1/4-20 x 3/81/4-20x3/8 hex c/s gr2 zinc b18.2.12500
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QFCTXHex Head Cap ScrewGrade 5Zinc/Clear1/4-20 x 3/81/4-20x3/8 hex c/s gr5 zinc b18.2.11000
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B & K FASTPAHex Head Cap ScrewGrade 8Zinc/Yellow1/4-20 x 3/81/4-20 x 3/8 hex cap screws gr 8 z yellow b18.2.1443
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B & K FASTPAHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 3/81/4-20 x 3/8 hex cap screws 18-8 stainless b18.2.13210
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OSSCORIHex Head Cap ScrewGrade 5Zinc/Clear1/4-20 x 3/81/4-20x3/8 hex cap screw grade 5 plated b18.2.1624
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Pac FasTXHex Head Cap ScrewGrade 5Zinc/Clear1/4-20 x 3/81/4-20 x 3/8 hex cap screw grade 5 (sae j429) coarse zinc usa /canada b18.2.13700
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Pac FasTXHex Head Cap ScrewGrade 5Zinc/Clear1/4-20 x 3/81/4-20 x 3/8 hex cap screw grade 5 (sae j429) coarse zinc (import) b18.2.13300
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THRDFASTFLHex Head Cap ScrewGrade 2Zinc/Clear5/16-18 x 3/8gr2 hex c/s b18.2.11,096
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THRDFASTFLHex Head Cap ScrewGrade 2Zinc/Clear1/4-20 x 3/8gr2 hex c/s b18.2.1376
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THRDFASTFLHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#10-24 x 3/818-8 ss hex c/s b18.2.1315
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THRDFASTFLHex Head Cap ScrewBrassPlain1/4-20 x 3/8hex c/s b18.2.1300
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THRDFASTFLHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 3/818-8 ss hex c/s b18.2.123
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THRDFASTOKHex Head Cap ScrewGrade 5Zinc/Clear1/4-20 x 3/8gr5 hex c/s b18.2.167
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THRDFASTOKHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 3/818-8 ss hex c/s b18.2.150
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THRDFASTALHex Head Cap Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 3/818-8 ss hex c/s b18.2.13
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THRDFASTALHex Head Cap ScrewBrassPlain1/4-20 x 3/8hex c/s b18.2.157
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WSBKYHex Head Cap ScrewGrade 5Zinc/Clear1/4-28 x 3/8screw hcs gr5 (zt) 1/4-28x3/8 b18.2.14,594
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