UN,UNc,UNF,UNEF,UNS,統一螺紋直溝絲攻,統一螺紋_全鎢鋼直溝絲攻(牙攻)#4-40UNC,#6UNC,#8UNC,#10UNC,#12UNC,1/4-20UNC,5/16-18UNC,3/8-16UNC,7/16-14UNC, ...
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