Value Collection 34349 Hex Lock Nut 1/4-20 Nylon Insert

Product Description

The VALUE COLLECTION 34349 is a 1/4-20 hex lock nut with a nylon insert locking style, manufactured from Grade 2 steel with a zinc-plated finish. The nylon insert deforms around mating threads under torque, creating resistance to loosening from vibration and rotation. At 5/16 inches high with a 7/16 inches width across flats, this nut follows UNC thread standards with a right-hand thread direction. It is a standard fastener used across HVAC, plumbing, electrical, and general mechanical assembly applications where a low-profile, vibration-resistant fastener is required. Licensed trades and maintenance technicians install this type of nut as part of equipment mounting, panel assembly, and structural fastening work.

This hex lock nut is suited for residential and light commercial applications where UNC-threaded 1/4-20 fasteners are specified. Typical install scenarios include securing HVAC cabinet panels, electrical enclosure components, plumbing bracket assemblies, and general mechanical equipment. The zinc-plated finish provides basic corrosion resistance for indoor and sheltered environments. This nut is sold individually but carries a minimum order quantity of 50 units, making it appropriate for stocking in service vehicles or shop inventory.

Key Features

• Nylon insert locking style resists loosening under vibration without thread damage
• 1/4-20 UNC right-hand thread for compatibility with standard inch-system fasteners
• Grade 2 steel construction provides adequate tensile strength for general mechanical use
• Zinc-plated finish offers basic corrosion resistance in indoor and sheltered environments
• Compact profile: 5/16 inches high, 7/16 inches across flats, 0.505 inches across points

Compatibility

Designed for use with any 1/4-20 UNC-threaded male fastener in inch-measurement applications across general mechanical, HVAC, electrical, and plumbing assembly contexts.

Installation Notes

Installation requires a standard 7/16-inch wrench or socket. Power down or de-energize any equipment before fastening or removing hardware on electrical or HVAC assemblies. The nylon insert is single-use by design — once fully seated and removed, the locking torque value is reduced and replacement is recommended. Fastener installation should follow the torque requirements of the specific assembly drawing or equipment manufacturer guidelines.