Standard Code | Standard Title | Standard Class | Order |
---|---|---|---|
GB/T 152.4-1988 |
Fasteners--Counterbores for hexagonbolts and nuts 紧固件 六角头螺栓和六角螺母用沉孔 |
China National Standards Fasteners Counterbores hexagon |
English PDF |
GB/T 152.3-1988 |
Fasteners--Counterbores for hexagon socket head screws and slotted cheese head screws 紧固件 圆柱头用沉孔 |
China National Standards Fasteners Counterbores hexagon |
English PDF |
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