12-24 x 7/8 Hex Washer Head TEKS® Self Drilling Screw (T4) Climaseal® . The premier fastener for heavy duty steel attachments.
Ideal for attaching metal deck, clips and roof panels to purlin, girt or bar joist
Unique double fluted point has precise cutting edges to improve drill performance in 1/4" and 1/2" steel.
Climaseal® finish provides excellent corrosion resistance and lowers tapping torque