#6-32 x 5/8 Inch Coarse Black Oxide Medium Carbon Steel Button Head Socket Cap Screw USA Best Seller Back up washers are flat

Back up washers are flat washers for rivets

Red color indicator

BLUE WINDSHIELD TWL 2PL 2240CS

Ideal for fasteners ranging from #2 to 1/2" (2

#6-32 x 5/8 Inch Coarse Black Oxide Medium Carbon Steel Button Head Socket Cap Screw USA Best Seller Back up washers are flatSocket head cap screws are commonly used in machine assembly for removable panels and parts. They have a round cap with a hex head and are tightened with a socket wrench drive. Longer caps are easier to see when fastened while button and flat head caps are less likely to snag clothing or linkages. Cap screws with a black oxide or armor coat finish resist corrosion.