... Forming; 1.title:washer;2.all kinds of standard nuts such as GB,ISO.DIN.JIS,ANSI,BS,UNI,AS ... ,etc and non-standard nuts;3.size range:Mm3-Mm36;4.we manufacture non- ... standard nuts according to customers'drawings or samples;5.grade:4 ... :hot treatment;10.our main products include flat washer,spring washer,metal washer,etc;11.competive price for FOB ...