The Buyers 0.75" x 3/8-16" Thread Size Square Head Set Screw is a great choice for a variety of applications. Made from steel or other durable materials, this set screw is designed to provide a secure fit and hold. The square head design allows for easy tightening and loosening with a wrench or pliers, making it ideal for use in a variety of applications. Whether you're securing handles, knobs, pulleys, gears or other components, this set screw is sure to provide a secure fit and hold. FleetPride is your First Click in Heavy Duty®.