6-13X1 3/4 Flat Head Nibbed Square Recess Deep Thread Wood Screw Type 17 2/3 Thread Zinc (Pack Qty 6,000) BC-0628DQF17D

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 C1022 case-hardened steel Rockwell C 45 minimim