Value Collection 1-THN-25C Hex Lock Nut 1/4-20 18-8 Ss

Product Description

The VALUE COLLECTION 1-THN-25C is a 1/4-20 hex lock nut with a nylon insert locking mechanism, manufactured from 18-8 stainless steel with a bright uncoated finish. The nylon insert deforms around mating threads when tightened, creating resistance to vibration loosening without the need for thread-locking compounds. At 13/64 inches high with a 7/16 inch width across flats, this nut is sized for standard UNC fastener applications. HVAC technicians, plumbers, electricians, and mechanical contractors use nylon insert lock nuts anywhere a vibration-resistant, corrosion-resistant threaded connection is required in light-duty to medium-duty assemblies.

This lock nut is suited for indoor and outdoor mechanical assemblies where stainless steel corrosion resistance is a priority. Common applications include equipment panel fastening, pipe support bracketing, electrical enclosure hardware, and HVAC component mounting. The right-hand thread direction matches standard UNC fastener systems. This nut is sold individually with a minimum order quantity of 50 pieces.

Key Features

• Nylon insert locking style resists vibration loosening without adhesives or secondary locking hardware
• 18-8 stainless steel construction provides corrosion resistance in wet or outdoor environments
• 1/4-20 UNC thread size with right-hand thread direction for standard fastener compatibility
• Bright uncoated finish maintains dimensional accuracy and allows visual inspection of seating
• Width across flats of 7/16 inch accepts standard 7/16 inch wrenches and sockets
• Compact height of 13/64 inches suits installations with limited axial clearance

Compatibility

Designed for use with 1/4-20 UNC threaded fasteners in standard inch-measurement mechanical assemblies.

Installation Notes

Nylon insert lock nuts are installed by mechanical and trade technicians using standard open-end, box, or socket wrenches sized to 7/16 inch across flats. The nylon insert is a single-use locking feature — once fully engaged and removed, the insert loses a portion of its locking torque and the nut should be replaced. Ensure mating threads are clean and free of debris before installation to prevent cross-threading or damage to the nylon insert.