6-13X5/8 #2 Square Recess Flat Head No Nibs Deep Thread Type 17 Full Thread Nickel (Pack Qty 9,000) BC-0610DQF17NNN

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