8-11X1 Square Phillips Drive Round Washer Deep Thread Type17 Full Thread Black Oxide (Pack Qty 4,000) BC-0816DXRW17B

The deeper thread design offers greater resistance to pull-out forces. The chip cavity (or auger point) enables the fastener to drive—especially in denser woods—without pre-drilling a pilot hole. 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 wood through a pocket hole. C1022 case-hardened steel Rockwell C 45 minimimYou may also like M20-2.5X55 Metric Socket Head Cap Screw Class 12.9 ISO 4762 Black Oxide (Pack Qty 10) BC-M20055CSP.