Introducing the high-quality OEM Locknut 1/2 20 Nylon Insert. This locknut is specifically designed to provide secure and reliable fastening for a wide range of applications. With its durable construction and nylon insert, it offers enhanced grip and resistance to vibrations. Trust in the Mfg. Part Number 101903101 – LOCKNUT- 1/2-20 NYLON INSERT for all your fastening needs.