Value Collection 39656 Hex Lock Nut 9/16-12 Grade 8

Product Description

The VALUE COLLECTION 39656 is a 9/16-12 hex lock nut with a nylon insert locking mechanism, manufactured from Grade 8 steel with a zinc yellow dichromate finish. The nylon insert creates a prevailing-torque lock that resists loosening under vibration and shock loads without requiring any secondary locking hardware. At 41/64 inches in height and 7/8 inches across the flats, this nut conforms to UNC thread standards and is suited for high-strength bolted assemblies in mechanical, HVAC, and equipment service applications. Installation requires a standard 7/8-inch wrench or socket.

This fastener is used in residential and commercial mechanical assemblies where a reliable, reusable locking nut is required on Grade 8-rated hardware. It is appropriate for structural equipment mounting, bracket retention, and service panel fastening found in HVAC equipment frames, pump assemblies, and similar trade applications. The right-hand UNC thread ensures compatibility with standard North American fastener systems. Sold individually with a minimum order quantity of 25 pieces.

Key Features

• Nylon insert provides prevailing-torque locking without secondary hardware
• Grade 8 steel construction for high-strength fastening applications
• Zinc yellow dichromate finish for corrosion resistance
• Right-hand UNC thread direction for standard North American compatibility
• 41/64-inch height fits compact fastening spaces
• Does not meet military specifications — for commercial and trade use

Compatibility

Designed as a standard UNC-thread hex lock nut compatible with 9/16-12 Grade 8 fastener assemblies in commercial and residential mechanical applications.

Installation Notes

Installation should be performed by a qualified mechanic or trade technician using a properly sized 7/8-inch wrench or socket. De-energize and lock out all equipment before servicing fastened assemblies. Nylon insert lock nuts are designed for single or limited reuse — inspect the nylon insert for deformation before reinstalling. Follow applicable mechanical and structural codes for torque and fastener grade requirements.