 | UDC 621.882.6 | GB 8-88 | 代替 GB8-76 | | 方头螺栓 C级 | | Square head bolts-Product grade C |
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 | UDC 621.882.6 | GB 10-88 | 代替 GB10-76 | | 沉头方颈螺栓 | | Flat countersunk square neck bolts |
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 | UDC 621.882.6 | GB 11-88 | 代替 GB11-76 | | 沉头带榫螺拴 | | Flat countersunk nib bolts |
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 | UDC 621.882.6 | GB 12-88 | 代替 GB12-76 | | 半圆头方颈螺栓 | | Cup head square neck bolts |
|