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International Standard Category: Bolts, screws, studs

GB 32.1-1988    Hexagon Bolts with Wire Holes on Head
六角头头部带孔螺栓 A和B级;
Category No.: Valid Status:valid
Issued Organization: Issued Date:
Implemented Date:1905-6-10 Abolished Date:
Superseded Standard.: Superseded Date:
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