Keps Nuts

Keps nuts, also known as Keps K lock nuts or K-lock nuts, feature a unique design that combines a standard hexagonal nut with an integrated free-spinning washer that has serrations on its inner surface.

Frequently Asked Questions About Keps Nuts

What are Keps nuts used for?

Keps nuts are often used in applications where a secure joint is required and where there may be a risk of loosening due to vibrations or dynamic loads. They are frequently used in automotive and industrial applications.

How do Keps nuts work?

The serrations on the washer grip the mating surface, providing resistance to loosening caused by vibrations. When tightened, the teeth on the washer bite into the material, creating a lock that helps prevent the nut from backing off.

What is the difference between a Keps nut and a lock washer?

A Keps nut is a single integrated fastener that features both a hex nut and a lock washer, whereas a lock washer is a standalone piece placed between the standard nut and the mating surface.

What sizes do Keps nuts come in?

AFT offers Keps nuts in both metric and imperial sizing. Diameter-thread sizes range from #4-40 to 3/8”-24 or M3-0.50 to M10-1.50.

What materials and finishes are Keps nuts available in?

Keps nuts are made of steel or stainless steel and come in either plain or zinc Cr+3 finishes. Choosing stainless steel or a zinc finish provides additional corrosion resistance.