Back Home / Fasteners / Nuts / LOCK NUT NYLON UNC ZINC 3/8″-16 GR 8 LOCK NUT NYLON UNC ZINC 3/8″-16 GR 8 SKU: X8LN3816 Categories: Fasteners, Nuts Hex nut with a nylon-filled collar at its back end. When a screw reaches the collar, the threads and nylon engage for a tight, frictional fit. Restricts movement of the screw when it is subjected to vibration. Designed to be used in structural application with Grade 8 cap screws or bolts. Applications include engines, turbines, hydraulic cylinders, railroads and aerospace. Nylon inserts nuts are not designed to be used at temperatures over 250° F. Made from heat treated steel. Proof load: 150,000 psi. Size: 3/8″-16. Yellow zinc plated. Case Quantity: 100 Log In For Pricing