Hexagon head bolt ASME B18.2.1, blue passivated zinc plated GR5 steel (A2K)
ASME B18.2.1 steel GR5 zinc-plated UNF
SCR-HCS-GR5-(ZN)-1/4_28X2
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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)
Datasheets(X)
 | |
Nominal diameter (d1) | 1/4 in |
Length (l1) | 2 in |
Thread type | UNF |
Head height (k1) | 0.156 in |
External drive (s1) | WS7/16 |
Material | Steel |
Property class | GR5 |
Surface | Zinc plated |
Width across flats | 7/16 inch |
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