1.Rail washer 2.Competitive price Rail washerWe supply kinds of rail ... lex nut, square nut, heavy and normal. 2) Specification: 4.6, 4.8, 8.8, 9.8, 10.9, 12.9, M20*230, M24 ... ), black paint, color paint, zinc, hdg; ect5. Spring Washer/Lock washer/one coil /two coil 1) Size: from 3/4-1 ... ; UIs6, UIs7.ect 2) Specification: one/two/more coin spring washer 3) Raw material: 60Si2Mn, 65Mn, 70#. ...