Push Nut Bolt Retainers

A push nut is a thin spring-steel retainer that pushes onto a stud, shaft, or bolt and grips one way to hold a part in place — no threading required. Push nuts (and pal-nut style retainers) are used to secure wheels, casters, knobs, axles, and light assemblies quickly and cheaply. Eugene Fastener & Supply stocks push nut bolt retainers in common shaft and stud sizes.

The dished spring teeth bite into the shaft and resist pull-off in one direction, making them ideal for high-volume, light-duty retention. They are generally single-use. By the piece or in bulk, same-day shipping before 2pm Pacific.

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Push Nuts & Bolt Retainers

Need these for a production run or a specific size?

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How Push Nuts Work

Push the retainer over a stud or unthreaded shaft; the angled spring teeth flex on and then bite back, resisting removal in the pull-off direction. No thread is needed, which makes push nuts fast and inexpensive for light retention — toys, casters, wheels, knobs, and panel assemblies. They are one-way and usually single-use; for a removable, load-rated shaft retainer consider a retaining ring.

FAQ

What is a push nut?

A push nut is a thin spring-steel retainer that pushes onto a stud or unthreaded shaft and grips one way to hold a part in place without threading. It is used for fast, light-duty retention of wheels, casters, knobs, and axles.

Are push nuts removable?

Generally no. Push nuts are one-way and usually single-use; removing one typically deforms it. For a removable shaft retainer, use a retaining ring.

Do push nuts need threads?

No. They grip an unthreaded stud or shaft (or the smooth shank of a bolt) by biting spring teeth, which is what makes them fast and low-cost for light assemblies.

How much can a push nut hold?

Light-duty retention only. They are designed to keep a part captive, not to carry significant load. For load-bearing joints use a threaded nut or a retaining ring rated for the application.

Why Buy from Eugene Fastener

  • By the piece or in bulk, with cross-reference help.
  • Same-day shipping on orders placed before 2pm Pacific.
  • Since 1969 — serving Pacific Northwest manufacturers, contractors, and equipment makers for over 55 years.

Push nuts complement our speed nuts and retaining rings. Browse all nut types or contact our sales team for sizing, cross-references, or bulk pricing. Eugene Fastener & Supply — serving the Pacific Northwest since 1969.

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