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國家標準 GB/T 5782,GB/T 5783
國際標準 ISO 4014,ISO 4017
德制標準 DIN 931,DIN 933
美制標準 /
英制標準 /
日制標準 JIS B 1180
機械性能 A2-70
表面處理 本色

   規格范圍(美、英制尺寸折算成公制尺寸,1inch=25.4mm):

M3M4M5M6M8M10M12M14M16M18M20M22M24M27M30
//10~5012~5016~5020~10020~10025~15025~15030~15040~150////
欧美黄片
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