S-90715A125 1/4"-20 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through nylon insert locking mechanism that maintains secure fastening in high-motion environments
• Exceptional corrosion resistance with 316 stainless steel construction, ideal for harsh industrial and marine applications
• High-temperature performance with nylon insert rated up to 220°F for reliable operation in demanding thermal conditions
• Quick installation and removal with standard external hex drive profile and coarse UNC threads for efficient assembly
• Precise thread engagement with Class 2B fit ensuring consistent performance and reduced cross-threading risk
• Comprehensive compliance meeting RoHS 3 and REACH environmental standards for global industrial use
• Durable locking performance with right-hand thread design that maintains tension through multiple installation cycles

Professional Applications & Engineering Value

This 316 stainless steel nylon insert lock nut delivers critical vibration resistance where conventional fasteners fail. The nylon insert locking mechanism creates consistent friction against mating threads, preventing loosening from machinery vibration, thermal cycling, and dynamic loads. With UNC coarse threads and Class 2B thread fit, installation is streamlined while maintaining precision alignment in automotive assemblies, industrial equipment, marine hardware, and processing machinery. The external hex drive accommodates standard tools for efficient maintenance in confined spaces. 316 stainless steel construction provides superior chloride resistance compared to 304 grade, making these lock nuts ideal for chemical processing, coastal installations, and food processing equipment where corrosion threatens fastener integrity.

Specification Summary & Compliance

This lock nut features 1/4"-20 UNC coarse threads with Class 2B thread fit for standard industrial applications. Dimensions include 7/16" width across flats and 5/16" height. The product complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and workplace safety. Manufacturing follows industry standards for nylon insert locknuts with right-hand thread direction and external hex drive configuration.