Value Collection SNI2125-015BX Slotted Lock Nut 1-1/4-7

Product Description

The VALUE COLLECTION SNI2125-015BX is a slotted lock nut designed for high-load fastening applications where positive locking is required. Manufactured from Grade 2 steel with a bright, uncoated finish, this nut threads onto a 1-1/4-7 UNC right-hand thread. It measures 1-1/16 inches in height and 1-7/8 inches across the flats. The slotted design accepts a cotter pin or safety wire through the mating bolt, preventing the nut from backing off under vibration or dynamic loading. It is suited for use by millwrights, maintenance technicians, and mechanical contractors in industrial, HVAC structural, and general mechanical assembly work.

This slotted lock nut is used in applications requiring a positive mechanical lock on threaded fastener assemblies. Typical installations include shaft retention, bearing housings, machinery frames, and structural mechanical connections where vibration or cyclic loading could otherwise cause fastener loosening. The 1-1/4-7 UNC thread size makes it appropriate for heavy-duty bolted connections in both commercial and industrial settings. It is sold individually and is compatible with standard 1-1/4-inch UNC threaded fasteners.

Key Features

• 1-1/4-7 UNC right-hand thread for compatibility with standard inch-series fasteners
• Slotted design accepts a cotter pin or safety wire for positive mechanical locking
• Grade 2 steel construction for general-purpose strength requirements
• Bright, uncoated finish suitable for dry or protected indoor environments
• 1-1/16 inch height and 1-7/8 inch width across flats for standard wrench fitment

Compatibility

Designed for use with standard 1-1/4-7 UNC inch-series threaded bolts and studs in general mechanical and structural fastening assemblies.

Installation Notes

Installation is performed by millwrights, maintenance mechanics, or mechanical contractors using a standard open-end or box wrench sized to 1-7/8 inches across the flats. Always ensure the mating bolt or stud is clean and free of damage before threading the nut. After torquing to the assembly specification, align the slots with the cotter pin hole in the bolt and insert an appropriately sized cotter pin or safety wire to complete the positive lock. Follow applicable ASME or facility torque standards for the fastener grade and application.