Hillman Headless SAE Steel Socket Set Screws 5/16-24 x 3/8", 20 Pack

Product Description Hillman Socket Set Screws are headless fasteners built to lock a rotating or sliding part onto a shaft. Sized 5/16-24 x 3/8", they thread through a tapped hole in a collar, gear, pulley, knob, or hub so the point bears firmly against the shaft, holding the part in position and preventing it from slipping or spinning under load. The headless design seats fully below the surface so nothing protrudes to catch or snag, while the internal hex socket drive lets you apply high torque with an Allen key, even in tight or recessed spots. The fine thread and blunt point grip the shaft securely without heavily marring it, so parts can be repositioned when needed. Machined from steel with a plain, dark finish, these set screws offer the strength to hold firmly under torque and vibration. They are made for dry indoor drivetrains, machinery, and assemblies, standing up to everyday operation and repeated adjustment while keeping parts locked in their set position over time. Use them for fastening pulleys, gears, sprockets, collars, knobs, and levers to shafts in motors, machinery, tools, and equipment. They are a staple for drivetrain assembly, repair, and routine maintenance in the shop and workshop. This 20-piece pack keeps a handy supply on hand for machinery and equipment upkeep around the shop. From the Manufacturer A Set Screw is a type of screw generally used to secure an object within or against another object. Set screws are most often headless, meaning that the screw is fully threaded and has no head projecting past the major diameter of the screw thread. The set screw passes through a threaded hole in the outer object and is tightened against the inner object to prevent it from moving relative to the outer object.

• SECURE SHAFT HOLD: These set screws lock a collar, gear, pulley, knob, or hub onto a shaft, threading through a tapped hole so the point bears firmly against the shaft to prevent slipping and hold the part in position under load.
• HEADLESS, SOCKET DRIVE: The headless body seats fully below the surface so nothing protrudes, while the internal hex socket drive delivers high torque in tight spots and the fine thread with a blunt point grips the shaft without chewing it up.
• STEEL, PLAIN FINISH: Machined from steel with a plain, dark finish, these set screws offer the strength to hold parts firmly under torque and vibration, standing up to everyday use in dry indoor drivetrains and assemblies.
• MACHINERY AND DRIVE USE: Ideal for fastening pulleys, gears, sprockets, collars, knobs, and levers to shafts in motors, machinery, and equipment, a dependable choice for drivetrain assembly, repair, and maintenance work.
• TRUSTED HILLMAN QUALITY: Hillman supplies dependable fasteners and hardware that homeowners and pros rely on for everyday projects. Keep these set screws on hand for machinery, motor, and equipment repairs and adjustments.