GB/T 32.2-1988
Hexagon head bolts with reduced shank
TB/T 1479-1991
Axle end bolt for rail vehicle axle-hexagon head with hole bolts for fine rod
GOST 7795-1970
Hexagonal head guide neck bolts with hole on head
GOST 7811-1970
Hexagonal head guide neck bolts with hole on head
GOST 15590-1970
Hexagonal head guide neck bolts with hole on head
DS 51417-1999
Metric hexagon bolts fine thread with wire holes on head
GB/T 32.2-2025
Hexagon head bolts with reduced shank
