8-15X2 1/4 Square Recess Trim Head Drywall Screw Fine Thread Black Phosphate (Pack Qty 2,000) BC-0836YQFT by Shorpioen

For attaching wood trim to wood framing of up to 20 gage thick. The square drive variety is preferred when greater torque is required during installation | AISI 1018 or equivalent steel | Screws shall be quenched in liquid and then tempered by reheating to 650F minimum