Midwest Fastener 1/4 in.-20 Keps Lock Nut

The Midwest Fastener 1/4 in.-20 Keps Lock Nut is designed to provide secure fastening and resist loosening under vibration in a wide variety of hardware, machinery, and automotive applications. Engineered with an attached free-spinning external tooth star washer, this nut creates consistent tension and positive locking grip against mating surfaces without requiring a separate lock washer. Constructed from durable steel with a protective zinc finish and Grade 2 strength rating, this coarse thread keps nut delivers dependable performance and corrosion resistance for everyday mechanical and structural fastening needs.