Keps nut

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Keps nuts

A Keps nut, (also called a K-nut[1] or washer nut), is a nut with an attached, free-spinning washer.

It is used to make assembly more convenient. Common washer types are star-type lock washers, conical, and flat washers.[1]

'Keps' trademark[edit]

Keps is a trademark of ITW Shakeproof. The name comes from "kep" in Shakeproof, and the "s" is because usually more than one are purchased.[2]



  1. ^ a b McMaster, p. 3125.
  2. ^ Glossary of Terminology Related to Nuts and Bolts, retrieved 2008-11-25.


  • McMaster-Carr catalog (114th ed.), McMaster-Carr.