Value Collection 34285 Hex Lock Nut 7/16-20 Nylon Insert

Product Description

The VALUE COLLECTION 34285 is a 7/16-20 UNF hex lock nut with a nylon insert locking mechanism, manufactured from Grade 2 steel with a zinc-plated finish for corrosion resistance. The nylon insert deforms around mating threads under torque, creating a prevailing-torque lock that resists loosening from vibration without damaging the fastener. Standing 15/32 inches high with a width across flats of 11/16 inches, this nut follows a right-hand thread direction and conforms to inch measurement standards. It is suited for mechanical assemblies where vibration resistance is required and reusability is acceptable.

This lock nut is used across a wide range of trade and industrial applications including HVAC equipment mounting, plumbing fixture securing, electrical panel assembly, and general mechanical fastening. The zinc-plated finish provides light-duty corrosion protection appropriate for indoor or protected outdoor environments. Its 7/16-20 UNF thread pitch is a fine-thread specification commonly found in automotive, HVAC, and light structural assemblies where thread engagement strength is important.

Key Features

• Nylon insert locking style provides vibration-resistant prevailing torque without thread damage
• 7/16-20 UNF fine-thread specification for high thread engagement strength
• Grade 2 steel construction for general-purpose fastening applications
• Zinc-plated finish for light corrosion resistance in protected environments
• Right-hand thread direction per standard UNF fastener convention
• Height of 15/32 inches and width across flats of 11/16 inches for standard wrench fitment

Compatibility

Designed as an OEM-style replacement or general-use hex lock nut for any application requiring a 7/16-20 UNF nylon insert prevailing-torque nut in Grade 2 steel with a zinc-plated finish.

Installation Notes

Installation is performed with a standard open-end or box wrench sized for an 11/16-inch across-flats dimension. Ensure mating bolt threads are clean and free of damage before installation, as nylon insert nuts are sensitive to contaminated or damaged threads. Nylon insert lock nuts are intended for single-use or limited-reuse applications — inspect the nylon insert for deformation before reusing. Follow applicable mechanical or structural codes for torque requirements based on the specific assembly.