Value Collection 88NJP Hex Jam Nut 7/8-14 Un Steel

Product Description

The VALUE COLLECTION 88NJP is a 7/8-14 UN hex jam nut machined from steel for use in threaded fastener assemblies requiring a low-profile locking nut. The right-hand thread conforms to the UN (Unified National) standard. Measuring 1-5/16 inches across the flats and 31/64 inches high, this nut is designed to back-lock against a primary nut to prevent loosening under vibration or dynamic loading. The uncoated finish is suitable for indoor or protected installations. It is a standard single-piece fastener used by machinists, millwrights, and maintenance technicians across industrial and mechanical service applications.

This jam nut is suited for general mechanical assembly, maintenance, and repair work where a 7/8-14 UN right-hand threaded fastener system is in use. Typical applications include shaft and bearing retention, threaded rod assemblies, and machinery adjustment mechanisms. It is used in both light and heavy industrial environments wherever a thin locking nut is required to secure an adjacent standard hex nut in place.

Key Features

• 7/8-14 UN right-hand thread form for standard Unified National thread engagement
• Low-profile jam nut design at 31/64 inches high for space-constrained locking applications
• 1-5/16 inches across flats for use with standard hex wrenches and sockets
• Steel construction provides strength and durability under mechanical load
• Uncoated finish for straightforward use in protected or indoor environments

Compatibility

Designed as an OEM-style replacement or service fastener for any threaded assembly using a 7/8-14 UN right-hand thread specification.

Installation Notes

Installation is typically performed by a machinist, millwright, or qualified maintenance technician. Thread the jam nut onto the fastener first, then install the primary hex nut and back-tighten the jam nut against it using two wrenches simultaneously. Ensure threads are clean and free of debris before assembly. Always de-energize or lock out equipment before performing fastener service on mechanical assemblies.