![Indent Hex Washer Head Tapping Screw, Unslotted](http://www.sterlinghardware.com/cdn/shop/products/00683_450_6a388fc8-cf61-4705-b421-e423392d810e_{width}x.jpg?v=1575439626)
Indent Hex Washer Head Tapping Screw, Unslotted
Has an indented top surface, six flat sides, and a flat bearing surface. Preferred in high volume assembly where pneumatic equipment is used to drive the screw. Can transmit significantly higher tightening torque levels than other head styles. *ZB - BLUE ZINC