Value Collection R57500122 Acorn Nut 1/4-28 Unf Ss

Product Description

The VALUE COLLECTION R57500122 is a standard acorn nut machined from 18-8 stainless steel and threaded to a 1/4-28 UNF specification. Acorn nuts, also called cap nuts, close off the end of a threaded fastener to protect the thread and provide a finished, rounded appearance. This nut measures 7/16 inches across the flats and stands 15/32 inches in overall height. The uncoated 18-8 stainless steel construction provides solid corrosion resistance in wet or chemically exposed environments. Electricians, plumbers, HVAC technicians, and general trade professionals reach for this fastener when a capped, finished thread end is needed on a 1/4-28 UNF bolt or stud.

This acorn nut is suited for light-gauge panel assemblies, enclosure cover fastening, terminal board hardware, and any application where thread protection and a clean finished profile are required. The 1/4-28 UNF thread pitch is common in precision mechanical assemblies and instrument-grade hardware across HVAC, electrical, and plumbing trade work. The 18-8 stainless steel grade performs well in both indoor and outdoor service environments where mild corrosion resistance is a requirement. This part is sold individually; minimum order quantity is 100 pieces.

Key Features

• 1/4-28 UNF right-hand thread for precise, fine-pitch engagement
• 18-8 stainless steel construction for corrosion resistance without coating
• 7/16 inch width across flats fits standard hex tooling
• 15/32 inch overall height provides full thread coverage and a domed cap profile
• Uncoated finish eliminates coating thickness variables on tight-tolerance assemblies

Compatibility

Designed as a standard replacement or new-installation acorn nut for any 1/4-28 UNF threaded fastener application requiring a closed, capped hex nut in 18-8 stainless steel.

Installation Notes

Install with a 7/16 inch hex wrench or open-end wrench; avoid power-driving to prevent galling, which is common with stainless steel fasteners. Apply an anti-seize compound when torquing stainless hardware in stainless or aluminum mating threads to reduce the risk of thread seizing. Follow applicable fastener torque guidelines for the 1/4-28 thread class in the assembly being serviced. No specialized trade license is required for fastener installation, but the surrounding system should be de-energized or depressurized before any hardware service.