... and gr1,2,5About our factory:We are main manufacture and distributor (specialized in titanium products) in China.We have these equipments:CNC turning ... grinding,punch,rolled thread machine,argon welder.we can supply many kinds of products,we also can make products according to your ... Washer sizes:M4-M22 4)Standard:DIN,ASTM,GB,BSW,UNC,JIS DIN912,DIN931,DIN933,DIN934,DIN7991,DIN965,DIN966,ISO7380,DIN985 ...