Automotive engineering; hexagon head bolts with small widths across flats (not for new constructions)
汽车工程；平面宽度较小的六角头螺栓（不适用于新结构）

1989-12-01

Hexagon nuts with small widths across flats for use in automotive engineering (not intended for new designs)
用于汽车工程的小宽度六角螺母（不适用于新设计）

1990-03-01

Hexagon thin nuts with small widths across flats for use in automotive engineering (not intended or new designs)
汽车工程中使用的小宽度六角薄螺母（非预期或新设计）

1990-03-01

Hexagon slotted nuts with small widths across flats for use in automotive engineering (not intended for new designs)
汽车工程用小宽度平头六角开槽螺母（不适用于新设计）

1990-03-01

Hexagon thin slotted nuts with small widths across flats for use in automotive engineering (not intended for new designs)
汽车工程用小宽度平头六角薄开槽螺母（不适用于新设计）

1990-03-01