Value Collection R52001585 Hex Lock Nut 1-1/4-12 Grade 8

Product Description

The VALUE COLLECTION R52001585 is a nylon insert hex lock nut designed to resist vibration loosening in high-load fastener assemblies. It is manufactured from Grade 8 steel with a zinc yellow dichromate finish that provides corrosion resistance in demanding service environments. The nylon insert creates an interference fit against the mating thread, preventing rotation without the need for adhesives or secondary locking hardware. With a thread size of 1-1/4-12 UNF and right-hand thread direction, this nut is sized for heavy-duty mechanical and industrial applications. Licensed trades and maintenance professionals typically install this fastener in structural, equipment mounting, and drivetrain assemblies.

This hex lock nut is suited for use in heavy equipment, industrial machinery, agricultural equipment, and structural assemblies where vibration or dynamic loading is present. The 1-1/4-12 UNF thread specification is common in precision heavy-duty applications requiring fine thread pitch for controlled clamping force. The zinc yellow dichromate finish provides a baseline level of corrosion protection appropriate for indoor and sheltered outdoor use.

Key Features

• Nylon insert locking style resists vibration-induced loosening without adhesives
• Grade 8 steel construction rated for high-load fastener applications
• Zinc yellow dichromate finish for corrosion resistance
• 1-1/4-12 UNF fine thread for precise clamping control
• Right-hand thread direction for standard installation
• Hex drive profile accepts standard wrenches and impact tools

Compatibility

Designed as a standard UNF nylon insert hex lock nut for use with 1-1/4-12 right-hand threaded fastener assemblies in heavy-duty mechanical and industrial applications.

Installation Notes

Installation should be performed with a properly sized open-end, box-end, or socket wrench matched to the 1-13/16 inch across-flats dimension. Ensure the mating bolt threads are clean and free of debris before installation to avoid damaging the nylon insert. Nylon insert lock nuts are generally considered single-use fasteners — once the nylon has been compressed by a mating thread, locking effectiveness may be reduced if reused. Follow applicable torque specifications for Grade 8 fasteners as referenced in the relevant equipment service documentation.