HEX SLOTTED CASTLE NUT 1.Surface:plain,zinc plated,HD,brass 2.Size:M3- ... :Carbon Steel,SS,Brass 4.Grade:4.6,8,10 HEX SLOTTED CASTLE NUT1) Different kinds of nuts available ,M3 to ... .025Bulk in cartons then palletor According to customers' requirements DIN935 HEX SLOTTED AND CASTLE NUT