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The VALUE COLLECTION NL5X00400-100BX is an M4x0.7 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, resisting loosening caused by vibration and dynamic loads without requiring thread-locking compounds. At 5.00 mm in height with a 7.00 mm width across flats, this fastener conforms to DIN 985 dimensional standards. It features a right-hand thread direction and is suited for general mechanical assembly, light structural connections, and corrosion-resistant fastening applications. Sold in a minimum order quantity of 100 pieces.
This nut is used in applications where vibration resistance and corrosion resistance are both required. The 18-8 A2 stainless steel construction makes it appropriate for marine, food service, chemical-adjacent, and outdoor environments where carbon steel fasteners would corrode prematurely. Typical installation scenarios include panel assemblies, HVAC equipment frames, plumbing support hardware, and electrical enclosure fabrication. The DIN 985 standard ensures dimensional interchangeability with other compliant M4x0.7 hardware.
Designed for use with M4x0.7 right-hand threaded fasteners and bolts conforming to DIN or ISO metric standards. Dimensionally interchangeable with other DIN 985 compliant M4 hex lock nuts.
Install using a 7 mm wrench or hex nut driver. Hand-thread the nut onto the mating bolt until the nylon insert engages, then tighten with a tool to the appropriate torque for the joint design. Do not reuse nylon insert lock nuts after full removal, as the locking force of the insert degrades with each installation cycle. Stainless fasteners are susceptible to galling — apply an appropriate anti-seize compound if torque consistency is critical.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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