S-90640A131 3/8"-16 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance with a nylon insert that maintains locking force in high-motion environments, reducing maintenance needs.
• Enhanced corrosion protection from zinc-plated steel, ensuring long-term durability in industrial settings.
• Reliable thread engagement with UNC coarse threads and Class 2B fit for quick assembly and secure fastening.
• High-temperature resilience up to 220°F, ideal for applications exposed to moderate heat without performance loss.
• Easy installation and removal using standard external hex drive, compatible with common wrenches for efficient workflow.
• Compliance with environmental standards including RoHS 3 and REACH, meeting global regulatory requirements for safe use.
• Right-hand threading design for straightforward integration with standard components, minimizing installation errors.

Professional Applications & Engineering Value

This 3/8"-16 nylon insert lock nut is engineered to address critical challenges in machinery and equipment subjected to constant vibration and thermal stress. The zinc-plated steel construction provides robust resistance to rust and wear, extending service life in harsh industrial environments like automotive assemblies, conveyor systems, and heavy-duty manufacturing. Its UNC coarse threads and Class 2B fit ensure precise alignment and strong holding power, reducing the risk of loosening under dynamic loads. By incorporating a nylon insert locking mechanism, it delivers consistent performance up to 220°F, making it a reliable choice for applications where temperature fluctuations and vibrational forces compromise fastener integrity. This nut is ideal for B2B procurement in sectors requiring vibration-resistant and temperature-rated fasteners that uphold operational safety and efficiency.

Specification Summary & Compliance

This lock nut features a 3/8"-16 UNC coarse thread with Class 2B fit for standard dimensional accuracy, ensuring compatibility with common mating components. It adheres to industry specifications for external hex drive and right-hand thread direction, with precise dimensions of 9/16" width and 29/64" height. The product is manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for global industrial applications without hazardous substances.