Midwest Fastener 1/4 in.-20 Nylon Insert Lock Nut

The Midwest Fastener 1/4 in.-20 Nylon Insert Lock Nut provides reliable locking resistance against loosening caused by vibration, torque, and movement. Constructed from premium stainless steel, this lock nut offers superior resistance against rust and corrosion, making it suitable for automotive, marine, outdoor, and heavy-duty mechanical assemblies. Featuring an integrated nylon collar that deforms elastically over the mating bolt threads, it creates a tight friction grip without damaging fastener threads. Designed for standard coarse thread applications, it ensures a tight, durable connection across a wide variety of hardware projects.