E-Z LOK is a manufacturer and master distributor of threaded inserts for metal, plastic and wood. Inserts for metal include solid wall and helical, wire-thread inserts. Inserts for plastic are available in press-in and ultrasonic designs. Inserts for wood include die cast zinc alloy hex drives for soft wood and brass knife threads for hard wood. Founded in 1956, E-Z LOK sells through local, regional, and national industrial distributors.