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Hex Cap Screws, Zinc/Black (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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METRO BOLnullHex Head Cap ScrewSteelZinc/Black1/4-20 x 5/8grade 5 hex cap screws are heavier duty than grade 2 steel options and are made from medium carbon steel and heat-treated. grade 5 steel has 120,000 psi tensile strength and meets asme b18.2.1 dimensional standards and sae j429 material quality standards. these screws may be used in medium-duty applications. they come in a black oxide finish or may be zinc plated or chrome plated. zinc plating helps provide durability in wet environments. chrome plating increases the hardness, durability, and corrosion resistance of screws.19000
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BHAMALHex Head Cap ScrewGrade 5Zinc/Black3/8-16 x 7/83/8-16x7/8 grade 5 hex cap bz b18.2.13705
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Irwin IndOntHex Head Cap ScrewGrade 2Zinc/Black5/16-18 x 1 1/45/16-18 x 1 1/4 unc gr 2 hhcs .0002 min zinc trivalent black b18.2.1310
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Irwin IndOntHex Head Cap ScrewGrade 2Zinc/Black5/16-18 x 15/16-18 x 1 unc gr 2 hhcs .0002 min zinc trivalent black b18.2.11438
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Irwin IndOntHex Head Cap ScrewGrade 2Zinc/Black3/8-16 x 13/8-16 x 1 unc gr 2 hhcs .0002 min zinc trivalent black b18.2.1591
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Irwin IndOntHex Head Cap ScrewGrade 2Zinc/Black3/8-16 x 1 1/43/8-16 x 1 1/4 unc gr 2 hhcs .0002 min zinc trivalent black b18.2.1748
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Irwin IndOntHex Head Cap ScrewGrade 2Zinc/Black3/8-16 x 23/8-16 x 2 unc gr 2 hhcs .0002 min zinc trivalent black b18.2.1545
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Irwin IndOntHex Head Cap ScrewGrade 2Zinc/Black3/8-16 x 1 1/23/8-16 x 1 1/2 unc gr 2 hhcs .0002 min zinc trivalent black b18.2.1536
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Irwin IndOntHex Head Cap ScrewGrade 2Zinc/Black3/8-16 x 2 3/43/8-16 x 2-3/4 hex capscrew gr2 steel zinctriv black .0002 b18.2.1300
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Irwin IndOntHex Head Cap ScrewGrade 2Zinc/Black3/8-16 x 3 1/43/8-16 x 3 1/4 unc gr 2 hhcs .0002 min zinc trivalent black b18.2.1500
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Irwin IndOntHex Head Cap ScrewGrade 5Zinc/Black1/2-13 x 3 1/21/2-13 x 3-1/2 hex capscrew grade 5 zinc tri black .0002 b18.2.1677
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AbabaCAHex Head Cap ScrewGrade 5Zinc/Black5/16-18 x 15/16-18 x 1 h/c black zinc super-seal & wax gr 5 b18.2.161
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AbabaCAHex Head Cap ScrewSteelZinc/Black5/16-18 x 1 1/45/16-18 x 1 1/4 h/c black zinc super-seal & wax g b18.2.1199
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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/Black1/2-20 x 2 1/21/2-20 x 2 1/2 h/c gr 5 blk znc b18.2.142
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EximS'poreHex Head Cap ScrewSteelZinc/Black#10-24 x 5/8screw hex c/s headsteel black zn# 10-24 x 5/8 in b18.2.1827
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EximS'poreHex Head Cap ScrewSteelZinc/Black5/8-11 x 1 3/4screw hex c/s headsteel black trivalent5/8-11 unc x 1.75 in b18.2.15
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B & K FASTPAHex Head Cap ScrewGrade 8Zinc/Black1/2-20 x 2 1/21/2-20 x 2 1/2 hex cap screws gr 8 zinc black b18.2.1144
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Pac FasTXHex Head Cap ScrewGrade 5Zinc/Black1/4-20 x 1/21/4-20 x 1/2 hex cap screw grade 5 (sae j429) coarse zinc black b18.2.1400
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WSBKYHex Head Cap ScrewGrade 5Zinc/Black5/16-18 x 1screw hcs gr5 (bz) 5/16-18x1 b18.2.14,883
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