

Manufacturer pricing rules prevent us from advertising our discount — no account or email required to see it.
Secure Payments
Easy Returns
Expert Advice
Fast Shipping
The VALUE COLLECTION R57500124 is a standard acorn nut machined from 18-8 stainless steel and threaded to a 5/16-24 UNF right-hand specification. Acorn nuts, also called cap nuts, enclose the end of a bolt or threaded stud with a domed head, protecting the thread from damage and eliminating a sharp exposed end. This nut measures 9/16 inches across the flats and stands 17/32 inches overall in height. The 18-8 stainless steel grade provides good corrosion resistance in general industrial, marine, and plumbing-adjacent environments. It weighs approximately 0.05 pounds per piece and ships with a silver, uncoated finish. Machinists, plumbers, electricians, and maintenance technicians commonly use hardware of this type where a finished appearance or thread protection is required.
This acorn nut is suited for use on 5/16-24 UNF threaded fasteners across a wide range of light industrial, mechanical, and trade-service applications. The fine UNF thread pitch is common in automotive, HVAC, and instrumentation assemblies where vibration resistance or precise clamping is a priority. The stainless steel construction makes it appropriate for installations exposed to moisture or mild corrosives, such as conduit fittings, pump housings, or panel enclosures.
Designed as a standard replacement or stocking acorn nut for any 5/16-24 UNF threaded bolt or stud requiring thread protection and a domed cap finish.
Install using a 9/16 inch hex wrench or socket driver. Ensure the mating bolt or stud is clean and free of damaged threads before engagement. Power down or de-energize any electrical assembly before accessing fasteners on live panels. Do not overtighten stainless steel nuts on stainless fasteners — galling can occur; apply an appropriate anti-seize compound when specified by the assembly manufacturer.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
Add install kit to cart
—
Thanks for subscribing!
This email has been registered!