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Hexagonal bolt ASME B18.2.1, trivalent blue passivated zinc plated GR8 steel, UNC (comparable with ISO metric thread)
Hexagonal bolt ASME B18.2.1, trivalent blue passivated zinc plated GR8 steel, UNC (comparable with ISO metric thread) - 1
Hexagonal bolt ASME B18.2.1, trivalent blue passivated zinc plated GR8 steel, UNC (comparable with ISO metric thread) - 2

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Hexagonal bolt ASME B18.2.1, trivalent blue passivated zinc plated GR8 steel, UNC (comparable with ISO metric thread)

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Mechanical properties are regulated in SAE J429



Thread length based on standard ASME B18.2.1



1 INCH (in) = 25.4 mm



Standard thread tolerance according to ASME B1.1 = 2A (for male thread)