Value Collection -31220-11/4 Hex Nut 1-1/4-12 Grade 5

Product Description

The VALUE COLLECTION -31220-11/4 is a Grade 5 steel hex nut with a 1-1/4-12 UNF thread profile and a clear zinc finish. It features a right-hand thread direction and measures 1.875 inches across the flats with a height of 1.094 inches. This nut weighs 0.54 pounds and is suited for medium-to-high-strength fastening applications in mechanical, plumbing, and general trade assembly work. The clear zinc coating provides basic corrosion resistance for indoor and light-duty outdoor installations. Installation is performed by hand and with standard open-end or socket wrenches by any trade professional working with threaded fastener assemblies.

This hex nut is appropriate for use in structural and mechanical assemblies requiring a fine-thread 1-1/4-12 UNF fastener with moderate strength characteristics. Grade 5 hardware is commonly specified in equipment mounting, pipe flange bolting, and general mechanical assembly across HVAC, plumbing, and industrial maintenance applications. It is sold individually with a minimum order quantity of 5 units per purchase.

Key Features

• Grade 5 steel construction for moderate tensile strength fastening
• 1-1/4-12 UNF fine-thread profile for precise thread engagement
• Clear zinc finish provides basic corrosion protection
• Right-hand thread direction — standard installation orientation
• 1.875 inches across flats, compatible with standard hex tooling
• Does not meet military specifications — suitable for commercial and trade use

Compatibility

Designed for use with any 1-1/4-12 UNF externally threaded fastener or bolt requiring a Grade 5 steel hex nut with a standard right-hand thread.

Installation Notes

Installation requires a standard open-end, box-end, or socket wrench sized for a 1.875-inch hex. Ensure mating bolt or stud is also rated Grade 5 or higher and uses a 1-1/4-12 UNF thread to prevent cross-threading. De-energize or depressurize any system before performing fastener assembly or service work in live mechanical or piping applications. Do not mix thread standards or grades without verifying load ratings for the specific application.