Impact sockets from Apex® Fastener Tools, formally Cooper Tools, have hex tolerances that are on average 48% tighter than DIN and 35% tighter than ANSI requirements. Apex® impact sockets provide an exact, sure fit every time. Impact sockets from Apex® Fastener Tools provide the tightest tolerances for straightness and concentricity available.

High-strength fasteners in the aviation industry or high-performance automotive field often require the use of an impact wrench or impact driver to deliver the amount of torque required to tighten or loosen them.