兑水 发表于 2009-12-4 09:32:37

ASTM F 1941M-2005 螺纹紧固件（统一标准英制螺纹（UN/UN...

F1941-00 Standard Specification for Electrodeposited Coatings on Threaded Fasteners (Unified Inch Screw Threads (UN/UNR))
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