MIDWEST FASTENER CORP 71921 1/16" Black Phosphate Steel Pushnut Washers 50PK

Secure 1/16" Shaft Fastening

These black phosphate steel pushnut washers grip a 1/16" diameter shaft using inward-facing flanges instead of threads. They are designed for applications where a permanent, vibration-resistant hold is needed without tapping holes. The pack contains 50 pieces for production or repair work. Install by pushing or lightly tapping onto the shaft.

Flanged Grip Eliminates Threading

The flanged design acts as teeth that bite into the shaft surface, creating a secure hold that resists loosening from vibration. This removes the need for threaded shafts, nuts or separate locking washers, simplifying assembly on unthreaded rods or studs. The black phosphate coating provides a base level of corrosion resistance for indoor or protected environments.

Removal Requires Cutting The Washer

Because the flanges deform to lock in place, the washer cannot be unscrewed or pried off without damaging the shaft; it must be cut away for removal. Verify your shaft diameter is exactly 1/16" before ordering, as the grip depends on precise interference fit. Ensure the application can accept a permanent fastener that cannot be adjusted or reused.