Value Collection 812100PS Hex Lock Nut M20x2.5 Din 985

Product Description

The VALUE COLLECTION 812100PS is a metric hex lock nut with a nylon insert locking mechanism, designed to resist loosening under vibration and dynamic loads. Manufactured from Class 8 steel with a zinc finish for corrosion resistance, this fastener meets DIN 985 standard. The M20x2.5 thread size and 30 mm width across flats make it suited for medium-to-heavy fastening applications across mechanical and structural assemblies. The nylon insert engages the bolt threads to create prevailing torque, eliminating the need for thread-locking compounds in most standard installations. Installed by maintenance technicians, millwrights, pipefitters, and general mechanical tradespeople.

This hex lock nut is used in a wide range of industrial, mechanical, and structural applications requiring a secure metric threaded connection. It is appropriate for both new assembly and field repair work where vibration resistance is a priority. The zinc finish provides a baseline level of protection against moisture and mild corrosive environments. Right-hand thread direction is standard for this configuration, compatible with conventional metric fastener tooling and torque procedures.

Key Features

• Nylon insert locking style provides prevailing torque without adhesives
• M20x2.5 right-hand thread, metric standard sizing
• Class 8 steel construction for high load-bearing capacity
• Zinc finish for corrosion resistance in general-duty environments
• Meets DIN 985 fastener standard
• 30 mm width across flats, 32.95 mm width across points

Compatibility

Designed as a standard DIN 985 metric hex lock nut for use with M20x2.5 metric bolts and threaded rod in general mechanical and structural assemblies.

Installation Notes

Installation requires a standard metric wrench or socket sized for a 30 mm hex. Power down and de-energize any associated equipment before working on fastened assemblies in electrical or mechanical systems. Do not reuse nylon insert lock nuts after removal, as the nylon insert loses prevailing torque effectiveness once deformed. Tighten to the torque specification defined by the assembly drawing or applicable structural code for Class 8 metric fasteners.