Value Collection NL5XX02000-010BX Hex Lock Nut M20x2.5

Product Description

The VALUE COLLECTION NL5XX02000-010BX is a metric hex lock nut with a nylon insert locking mechanism, manufactured from Grade 316 A4 stainless steel with a bright uncoated finish. Sized at M20x2.5 with a right-hand thread direction, it meets DIN 985 standards and delivers reliable vibration-resistant fastening in corrosion-demanding environments. The 316-grade stainless construction offers superior resistance to chlorides and marine atmospheres compared to 304-series material, making this nut well suited for harsh or wet service conditions. Plumbers, pipefitters, marine installers, and industrial maintenance technicians are the primary installers of this fastener.

This hex lock nut is appropriate for use in residential and commercial mechanical assemblies, marine hardware, pool and water treatment equipment, and chemical process piping where vibration and corrosion resistance are both required. The nylon insert engages the mating thread as the nut is driven down, creating a prevailing-torque locking action that resists loosening under dynamic loads. It is sold individually and is intended for single-use locking applications per standard fastener practice.

Key Features

• Grade 316 A4 stainless steel construction for high corrosion resistance including chloride and saltwater environments
• Nylon insert provides prevailing-torque locking action without the need for thread-locking compounds
• Right-hand thread, M20x2.5 pitch, compatible with standard metric M20 fasteners
• Conforms to DIN 985 fastener standard
• Bright uncoated finish — no risk of coating interference with thread tolerance
• Sold individually, minimum order quantity of 1

Compatibility

Designed as a DIN 985 compliant prevailing-torque hex lock nut for use with standard M20x2.5 metric threaded fasteners and bolts in corrosion-resistant assemblies.

Installation Notes

Installation is typically performed by maintenance technicians, pipefitters, or marine hardware installers using a standard open-end or box wrench sized for 30 mm across flats. As a prevailing-torque fastener, the nylon insert is intended for single-use service — remove and discard after any disassembly rather than reinstalling. Do not exceed thread engagement limits of the mating bolt, and ensure thread cleanliness before installation to avoid damaging the nylon insert.