S-90949A229 3/8"-24 Flange Nuts

Key Features & Benefits at a Glance

• Superior vibration resistance through distorted thread locking technology that maintains secure fastening in high-stress environments
• Enhanced load distribution with 13/16" flange design that reduces surface pressure and prevents damage to connected materials
• Exceptional durability provided by Grade G steel construction, ensuring reliable performance in demanding industrial applications
• Precise thread engagement with Class 2B fine UNF threads (3/8"-24) for secure, vibration-resistant connections
• Corrosion protection from black-oxide surface treatment that extends service life in various operating conditions
• Easy installation and removal with standard external hex drive design compatible with common wrench tools
• Regulatory compliance meeting both RoHS 3 and REACH standards for safe, environmentally responsible manufacturing

Professional Applications & Engineering Value

This Grade G black-oxide steel flange lock nut delivers exceptional engineering value through its combination of distorted thread locking technology and integrated flange design. The 3/8"-24 UNF fine threads with Class 2B fit provide precise engagement that effectively counters vibration-induced loosening in machinery, automotive assemblies, and heavy equipment. The 13/16" flange distributes clamping force over a wider area, reducing stress concentration and preventing surface damage to softer materials. The black-oxide coating offers corrosion resistance while maintaining dimensional stability, making these industrial lock nuts ideal for applications where reliability and long-term performance are critical. This engineered solution addresses common fastening challenges in manufacturing, construction, and transportation sectors where vibration and dynamic loads compromise joint integrity.

Specification Summary & Compliance

This flange lock nut features 3/8"-24 UNF fine threads with Class 2B thread fit for precise mating with corresponding male threads. The nut complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and workplace safety. Manufactured from Grade G steel with black-oxide surface treatment, it maintains dimensional accuracy with a 13/16" flange diameter, 9/16" width, and 27/64" height. The right-hand thread direction and external hex drive style follow industry standards for compatibility with common installation tools and procedures.