10-9X2 1/2 Square Recess Round Washer Head Deep Thread Type 17 Wood Screw 2/3 Thread Black Oxide (Pack Qty 1,750) BC-1040DQRW17DB

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 minimim