Value Collection 319550PR Hex Nut 1/2-20 Unf Grade 2 Zinc

Product Description

The VALUE COLLECTION 319550PR is a 1/2-20 UNF hex nut manufactured from Grade 2 steel with a zinc-plated finish. It features a right-hand thread and measures 0.75 inches across the flats with a height of 0.4375 inches. This standard fastener is used to secure threaded assemblies in light- to medium-duty applications across mechanical, plumbing, HVAC, and general construction work. Installation requires a standard 3/4-inch wrench or socket. The zinc coating provides basic corrosion resistance for indoor and moderately exposed environments.

This hex nut is suited for use in residential and light commercial settings where Grade 2 steel fasteners meet the load and torque requirements of the assembly. It is commonly used by plumbers, HVAC technicians, electricians, and general contractors during equipment installation, mounting, and structural fastening tasks. The 1/2-20 UNF thread pattern is a fine-thread designation, making it appropriate for applications requiring finer thread engagement than standard UNC fasteners.

Key Features

• 1/2-20 UNF right-hand thread for fine-thread fastening applications
• Grade 2 steel construction for light- to medium-duty use
• Zinc-plated finish for basic corrosion resistance
• 0.75 inches across the flats — fits standard 3/4-inch wrenches and sockets
• 0.4375 inches in height — compact profile for tight clearance assemblies

Compatibility

Designed for use with any 1/2-20 UNF threaded bolt or stud requiring a standard Grade 2 hex nut. Suitable for general mechanical and structural fastening where fine-thread UNF engagement is specified.

Installation Notes

Install using a 3/4-inch open-end, box-end, or socket wrench. Ensure mating bolt or stud thread standard matches UNF before assembly. Do not use in applications requiring Grade 5 or Grade 8 fasteners, as Grade 2 is not rated for high-tensile or safety-critical connections. Follow applicable mechanical codes and equipment manufacturer torque specifications for the assembly being serviced.