Value Collection 99803 7/8-14 Unf Steel Hex Nut

Product Description

The VALUE COLLECTION 99803 is a 7/8-14 UNF steel hex nut with a right-hand thread direction and a black oxide finish. It measures 1-5/16 inches across the flats and stands 3/4 inches high. This fastener is used to secure threaded assemblies in mechanical, HVAC, plumbing, and general trade applications where a unified fine thread is specified. The black oxide finish provides mild corrosion resistance and reduces light reflection. Installation is performed by hand or with a standard wrench, making it a straightforward component for licensed tradespeople and maintenance professionals working with fine-threaded fastener systems.

This hex nut is suited for use in residential and light commercial applications where a 7/8-14 UNF thread engagement is required. It is commonly found in mechanical assemblies, equipment mounting, and structural fastening tasks that call for a fine-thread profile. The unified fine thread pattern provides tighter thread engagement than coarse-thread equivalents, making it appropriate for applications subject to vibration or where precise load control is needed. Tradespeople working on HVAC equipment supports, piping hangers, and mechanical frames will find this nut a standard fit for common fastener requirements.

Key Features

• 7/8-14 UNF thread form for fine-thread engagement and vibration resistance
• Right-hand thread direction — standard installation orientation
• Steel construction for reliable tensile and shear strength
• Black oxide finish for mild corrosion resistance and low reflectivity
• 1-5/16 inches across flats — fits standard hex wrenches and sockets
• 3/4 inches height for full thread engagement depth

Compatibility

Designed as a standard replacement or supplemental fastener for any 7/8-14 UNF right-hand threaded bolt or stud in steel fastener applications.

Installation Notes

Installation is performed by qualified tradespeople using a standard open-end, box-end, or socket wrench sized for 1-5/16 inches across flats. De-energize or depressurize the assembly before servicing any fastener connection in live mechanical or utility systems. Do not over-torque; refer to the equipment manufacturer's fastener torque specifications for the specific assembly. Inspect threads on both the nut and mating bolt for damage or contamination before installation.