Value Collection MPC712208 Hex Lock Nut 1/2-13 Unc Grade B 25 Pack

Product Description

The VALUE COLLECTION MPC712208 is a 1/2-13 UNC Grade B hex lock nut with a distorted thread locking design. The distorted thread profile creates resistance against loosening caused by vibration and torque, eliminating the need for a separate locking element. The nut carries a zinc and wax plated finish that provides basic corrosion resistance for general-purpose fastening applications. The 3/4-inch width across flats fits standard hex tooling. This fastener is used by HVAC technicians, plumbers, electricians, and general tradespeople wherever a reliable, self-locking nut is needed in a threaded assembly.

The MPC712208 is suited for light to medium-duty fastening tasks in residential and commercial mechanical, electrical, and plumbing installations. The 1/2-13 UNC thread specification is one of the most common coarse-thread sizes in trade work, making this nut a standard fit across a wide range of equipment mounting, bracketing, and structural fastening scenarios. The package contains 25 nuts, making it practical for service trucks, job-site bins, and maintenance stock.

Key Features

• Distorted thread design resists loosening under vibration without a secondary locking element
• 1/2-13 UNC coarse thread — one of the most widely used thread sizes in trade applications
• Grade B steel construction for general-purpose fastening duty
• Zinc and wax plated finish for basic corrosion and galling resistance
• 3/4-inch width across flats fits standard hex wrenches and sockets
• Sold in a 25-count package for stocking and job-site use

Compatibility

Designed for use with 1/2-13 UNC threaded fasteners and bolts in general mechanical, HVAC, plumbing, and electrical installation applications.

Installation Notes

Installation requires a standard 3/4-inch open-end, box, or socket wrench. Distorted thread lock nuts are typically single-use — once fully torqued and removed, the locking effectiveness may be reduced and replacement is recommended. Always de-energize and isolate equipment before accessing fastener assemblies on live systems. Follow applicable codes such as NEC, IPC, or IFGC as relevant to the system being serviced.