Value Collection T51NE168 Hex Lock Nut Grade 5 1-8

Product Description

The VALUE COLLECTION T51NE168 is a nylon insert hex lock nut designed to resist loosening under vibration and dynamic loads. Manufactured from Grade 5 steel with a zinc trivalent chromate finish, it provides corrosion resistance in standard industrial and mechanical applications. The nut features a 1-8 inch thread size, right-hand thread direction, and measures 1-3/64 inches in height with a 1-7/16 inch width across flats. The nylon insert creates interference with mating threads, maintaining clamp load without the need for additional locking hardware. This fastener is installed by mechanics, millwrights, electricians, and HVAC technicians in equipment assembly and structural fastening tasks.

This hex lock nut is suited for general-purpose fastening applications in residential, commercial, and light industrial settings. It is commonly used in equipment mounting, mechanical assemblies, and structural connections where thread-locking performance is required without adhesives or split washers. The 1-8 thread size makes it compatible with standard coarse-thread fastener assemblies. Installers working on HVAC equipment frames, electrical enclosures, plumbing supports, and mechanical equipment supports will find this nut appropriate for typical field and shop applications.

Key Features

• Nylon insert locking style resists loosening from vibration without secondary hardware
• Grade 5 steel construction provides adequate tensile strength for general mechanical use
• Zinc trivalent chromate finish offers corrosion resistance and meets current RoHS-compatible finishing standards
• 1-8 coarse thread size fits standard inch-series fastener assemblies
• Right-hand thread direction for standard installation with conventional tools
• Hex profile accepts standard wrenches and sockets for field installation

Compatibility

Designed as a standard inch-series nylon insert hex lock nut for use with 1-8 coarse-thread bolts and studs in general mechanical and structural fastening assemblies.

Installation Notes

Installation requires a standard hex wrench or socket sized for a 1-7/16 inch width across flats. Nylon insert lock nuts are single-use by industry convention — the nylon insert loses locking effectiveness after removal and should not be reused in critical applications. Ensure mating bolt threads are free of debris and damage before installation. Torque to the value specified by the equipment manufacturer or applicable fastening standard for Grade 5 hardware.