Hexagonal bolt with thread up to the head ASME B18.2.1, blue passivated zinc plated GR2 steel (A2K), UNF (fine thread)
ASME B18.2.1 steel GR2 zinc plated UNF
SCR-HCS-FT-GR2-(ZN)-1/2_20X4
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The thread length deviates from the standard ASME B18.2.1 thread to head
1 INCH (in) = 25.4 mm
FT = full thread
The mechanical properties are regulated in SAE J429.
Datasheets(X)
 | |
Nominal diameter (d1) | 1/2 in |
Length (kl1) | 4 in |
Width across flats (s1) | 3/4 inch |
External drive | WS3/4 |
Material | Steel |
Surface | Zinc plated |
Head type | Hexagon head |
Thread type | UNF |
Property class | GR2 |
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