Value Collection 125NJ Hex Jam Nut 1-1/4-7 Un Steel

Product Description

The VALUE COLLECTION 125NJ is a 1-1/4-7 UN steel hex jam nut designed for right-hand threaded fastening applications. Jam nuts are thin profile nuts used to lock a standard nut in place or to secure a threaded assembly where low-profile fastening is required. This nut measures 1-7/8 inches across the flats and 23/32 inches high, with an uncoated steel finish. It is commonly installed by maintenance technicians, millwrights, and general tradespeople in mechanical and structural fastening work.

This hex jam nut is suited for use in machinery, equipment frames, conveyor systems, and general mechanical assemblies where right-hand UN threaded connections are specified. The 1-1/4-7 thread designation indicates a coarse-thread Unified National profile, widely used in industrial and trade applications. The uncoated steel finish makes it compatible with standard plating or coating processes if secondary finishing is required on site.

Key Features

• 1-1/4-7 UN right-hand thread for use with standard coarse-thread fasteners
• Low-profile jam nut design for locknut and thread-securing applications
• 1-7/8 inches across the flats for standard hex wrench fitment
• 23/32 inches high — thinner profile than a standard full nut
• Uncoated steel construction suitable for secondary finishing if needed
• Does not meet military specifications — rated for standard commercial use

Compatibility

Designed as a standard replacement or supplemental jam nut for mechanical assemblies using 1-1/4-7 UN right-hand threaded fasteners in industrial and commercial applications.

Installation Notes

Hex jam nuts are typically installed by mechanics, millwrights, or maintenance technicians using standard open-end or combination wrenches. De-energize and lock out any equipment before servicing threaded fastener assemblies on machinery. Torque the jam nut against the primary nut using two wrenches to prevent loosening under vibration. Inspect threads for damage or contamination before installation.