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Hexagon head bolt
ASME B18.2.1, grade 5 steel, zinc-plated, blue-passivated (A2K)
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Variants
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The mechanical properties are regulated in SAE J429
The thread length is based on standard ASME B18.2.1
1 INCH (in) = 25.4 mm
Standard thread tolerance in accordance with ASME B1.1 = 2A (for external thread)
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