Value Collection 93629 Hex Lock Nut 5/8-11 18-8 Ss 25pk

Product Description

The VALUE COLLECTION 93629 is a 5/8-11 UNC hex lock nut with a nylon insert locking mechanism, manufactured from 18-8 stainless steel. The nylon insert compresses against the bolt thread when the nut is driven down, creating resistance that prevents loosening under vibration or dynamic load. At 49/64 inches in height with a 15/16-inch width across flats, this is a standard-profile prevailing-torque nut sized for 5/8-inch fastener applications. Sold in a package of 25, it is suited for plumbers, pipefitters, HVAC technicians, electricians, and mechanical contractors who need corrosion-resistant fasteners for field assemblies.

This nut is used wherever a 5/8-11 UNC thread form is required and resistance to vibration-induced loosening is a priority. Common applications include equipment mounting, pipe hanger assemblies, electrical enclosure hardware, fan and blower mounting, and general mechanical assemblies in wet or corrosive environments. The 18-8 stainless steel construction makes it appropriate for indoor and outdoor installations where mild corrosive exposure is expected.

Key Features

• Nylon insert locking style provides prevailing-torque resistance without thread deformation
• 18-8 stainless steel construction resists corrosion in wet and outdoor environments
• 5/8-11 UNC thread size with right-hand thread direction
• 49/64 inch height and 15/16 inch width across flats for standard hex tooling
• Packaged in quantities of 25 for job-site and shop inventory use

Compatibility

Designed for use with any 5/8-11 UNC right-hand threaded fastener or bolt in applications requiring a prevailing-torque nylon insert lock nut.

Installation Notes

Installation should be performed with a standard 15/16-inch hex wrench or socket. Verify that the mating bolt thread is clean and free of debris before driving the nut, as the nylon insert is a single-use locking element and may lose prevailing-torque effectiveness if removed and reused. Nylon insert lock nuts are not recommended for applications where service temperatures consistently exceed the rated limit of the insert material. Follow applicable mechanical and structural codes for fastener torque requirements on the specific assembly.