 | 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 29.2-88 | 代替 GB29-76 | | 十字槽凹穴六角头螺栓 | | Cross recessed hexagon bolts with indentation |
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 | UDC 621.882.6 | GB 32.1-88 | 代替 GB32、25、26-76 | | 六角头头部带孔螺栓 A 和 B级 | | Hexagon bolts with wire holes on head-product grade A and B |
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