Value Collection NL5X01800-025BX Hex Lock Nut M18x2.5

Product Description

The VALUE COLLECTION NL5X01800-025BX is a metric hex lock nut with a nylon insert, manufactured from 18-8 A2 stainless steel with a bright uncoated finish. The nylon insert provides prevailing-torque locking action, resisting loosening caused by vibration or dynamic loading without damaging the mating thread. The nut conforms to DIN 985 and carries a right-hand thread in M18x2.5. It measures 18.50 millimeters in height with a 27.00-millimeter width across flats. This fastener is suited for mechanical assemblies, structural connections, and equipment fabrication where corrosion resistance and reliable thread retention are required.

This hex lock nut is used in applications where stainless steel is specified for corrosion resistance — including marine hardware, food-processing equipment, chemical processing assemblies, outdoor structural connections, and general industrial fastening. The nylon insert is appropriate for static and low-to-moderate vibration environments. It is installed by millwrights, maintenance technicians, pipefitters, and general tradespeople working with metric M18 fastener assemblies.

Key Features

• Nylon insert provides prevailing-torque locking without a separate locking device
• 18-8 A2 stainless steel construction offers corrosion resistance in wet and chemical environments
• Right-hand M18x2.5 thread per DIN 985 standard
• Bright uncoated finish — no coating thickness to account for in thread fit
• 18.50 mm height and 27.00 mm width across flats for standard metric tooling

Compatibility

Designed as a DIN 985-compliant hex lock nut for use with M18x2.5 right-hand-threaded metric bolts and studs in standard metric fastener assemblies.

Installation Notes

Install with a standard metric wrench or socket sized for 27.00 mm across flats. The nylon insert is single-use — once fully torqued and removed, the insert may not provide reliable locking force if reused. Torque to the fastener assembly specification for the applicable material and bolt class. Do not use in continuous service above temperatures that degrade nylon inserts, as the locking element may soften and lose retention force.