S-90715A148 3/8"-24 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through the nylon insert, which maintains locking force under dynamic loads and prevents loosening in high-motion environments.
• Excellent corrosion resistance provided by 316 stainless steel construction, ideal for harsh or marine applications where moisture and chemicals are present.
• Reliable performance at elevated temperatures, with the nylon insert rated up to 220°F, ensuring consistent locking in thermally demanding settings.
• Precise and secure thread engagement due to the Class 2B thread fit, offering smooth assembly and reduced risk of cross-threading.
• Easy installation and removal with the external hex drive design, allowing for standard wrench or socket tool compatibility and efficient maintenance.
• Fine thread spacing (UNF) for enhanced clamping force and improved load distribution in critical assembly joints.
• Compliance with environmental regulations, meeting RoHS 3 and REACH standards for safe use in regulated industrial sectors.

Professional Applications & Engineering Value

This 3/8"-24 UNF nylon insert locknut is engineered to address common industrial challenges such as vibration-induced fastener failure and corrosion in demanding environments. The 316 stainless steel material offers exceptional resistance to pitting and crevice corrosion, making it suitable for chemical processing, marine, and outdoor applications. The nylon insert provides a reusable locking mechanism that absorbs shocks and maintains clamp load without damaging threads, ideal for machinery, automotive, and aerospace assemblies where reliability is critical. With its external hex drive and fine thread design, it ensures quick installation and superior tension control, reducing downtime and enhancing operational safety in high-temperature settings up to 220°F.

Specification Summary & Compliance

This locknut features a Class 2B thread fit for consistent accuracy and smooth engagement, adhering to UNF fine thread standards with a size of 3/8"-24. Dimensions include a 9/16" width and 29/64" height for standardized tool use. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for global industrial supply chains. Manufactured to precise engineering specifications, it guarantees durability and performance in rigorous applications.