6-13X7/8 #2 Square Recess Flat Head No Nibs Deep Thread Type 17 Full Thread Zinc (Pack Qty 6,000) BC-0614DQF17NN

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