Hexagonal bolt
ASME B18.2.1 steel GR5 zinc-plated UNC
SCR-HCS-GR5-(ZN)-1/4_20X3 1/4
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The mechanical properties are regulated in SAE J429
The thread length is based on the standard ASME B18.2.1
1 INCH (in) = 25.4 mm
Datasheets(X)
 | |
Nominal diameter (d1) | 1/4 in |
Length (l1) | 3-1/4 in |
Thread type | UNC |
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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