GB/T 31.2-1988
Hexagon bolts with split pin hole on shank-reduced shank
GOST 7795-1970
Hexagonal head guide neck bolt with hole on shank
GOST 7795-1970
Upset type hexagonal head guide neck bolt with hole on shank
GOST 7811-1970
Hexagonal head guide neck bolt with hole on shank
GOST 7811-1970
Upset type hexagonal head guide neck bolt with hole on shank
GOST 15590-1970
Hexagonal head guide neck bolt with hole on shank
GB/T 31.2-2025
Hexagon bolts with split pin hole on shank-reduced shank