Value Collection 59NE8-242 Dn Hex Lock Nut 1-1/2-12 Grade 8

Product Description

The VALUE COLLECTION 59NE8-242 DN is a hex lock nut with a nylon insert, designed to resist loosening under vibration and dynamic loads. Machined from Grade 8 steel with a bright, uncoated finish, this nut follows UNF thread standards at a 1-1/2-12 thread size. It measures 1-39/64 inches in height and 2-3/16 inches across the flats. The nylon insert creates a prevailing-torque locking action that does not rely on adhesives or deforming the metal thread. This hardware is used by industrial maintenance technicians, millwrights, and mechanical contractors wherever a reliable, reusable lock nut is required in inch-standard fastener applications.

This nut is suited for heavy-duty mechanical assemblies, equipment frames, shaft retention, and structural fastening applications where standard hex nuts are insufficient. The UNF 1-1/2-12 thread pitch is common in precision and fine-thread applications across industrial machinery, agricultural equipment, and heavy transportation. The right-hand thread direction is the conventional standard for most mechanical assemblies. Sold individually, this nut fits applications calling for a single, large-diameter prevailing-torque fastener without the need to purchase in bulk.

Key Features

• Nylon insert provides prevailing-torque locking action resistant to vibration loosening
• Grade 8 steel construction for high tensile strength in demanding load applications
• UNF 1-1/2-12 fine thread for precise engagement and reduced backlash
• Right-hand thread direction per standard mechanical convention
• Bright, uncoated finish suitable for indoor or protected mechanical environments
• Reusable design — nylon insert retains function through multiple installations

Compatibility

Designed as a standard UNF replacement or service lock nut for any 1-1/2-12 inch-thread bolt or stud requiring a nylon-insert prevailing-torque hex lock nut in Grade 8 steel.

Installation Notes

Installation is performed by qualified mechanical technicians using the appropriate open-end or box wrench sized to 2-3/16 inches across the flats. De-energize and lock out any equipment before accessing fastener locations on live machinery. Nylon-insert lock nuts are not recommended for applications with sustained heat above approximately 250 degrees F, as elevated temperatures degrade the nylon insert and reduce locking torque. Inspect the nylon insert prior to reinstallation — replace the nut if the insert shows visible wear, cracking, or no longer provides resistance when threaded by hand.