8X5/8 Square Recess Round Washer Head Deep Thread Wood Screw Full Thread Black Oxide (Pack Qty 6,000) BC-0810DQRWDB

The deeper thread design offers greater resistance to pull-out forces. The head offers a greater bearing surface than a countersunk design. Used to attach surface-mounted door hinges or lock hasps into dense woods or when attaching two pieces of wo C1022 case-hardened steel Rockwell C 45 minimim