S-90099A031 3/8"-16 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through nylon insert locking technology that maintains secure fastening in high-motion environments
• Exceptional corrosion resistance with 18-8 stainless steel construction for long-term reliability in harsh industrial conditions
• Enhanced installation torque capability due to extra wide hex profile providing better grip and reduced tool slippage
• High-temperature performance with nylon insert rated up to 250°F for demanding thermal applications
• Precise thread engagement with Class 2B thread fit ensuring consistent, reliable mating with mating components
• Industry-standard compatibility through UNC coarse thread design that matches common industrial fastening systems
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for global industrial applications

Professional Applications & Engineering Value

This nylon insert lock nut delivers critical vibration-resistant performance for demanding industrial applications where constant motion and mechanical stress threaten fastener integrity. The 18-8 stainless steel construction provides excellent corrosion resistance in harsh environments, while the extra wide hex profile enables higher torque application without tool slippage, reducing installation time and improving worker safety. The UNC coarse thread design ensures compatibility with standard industrial components, making it ideal for assembly lines, heavy machinery, transportation equipment, and structural applications where permanent fastening solutions are essential. The nylon insert maintains consistent locking force through thermal cycles up to 250°F, preventing loosening in temperature-fluctuating environments.

Specification Summary & Compliance

This lock nut features 3/8"-16 UNC coarse threads with Class 2B thread fit for precise dimensional accuracy and reliable mating. Manufactured to industrial standards for external hex drive applications with right-hand thread direction. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and workplace safety standards are met for global industrial distribution and use.