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indented hex washer self drilling /tapping screw
with anti-loose indented
material:c1018 ; c1022
standard: JIS ;ANSI; DIN ; GB;
Finish :zinc plated ,ruspert; dacrotized;
package:small corlor box ; box+carton +pallet;or customer request
ndented hex washer self drilling/tapping screw,indented,hex washer screw,self drilling screw