S-91343A203 3/8"-24 Flange Nuts

Key Features & Benefits at a Glance

• Superior vibration resistance through serrated locking technology that prevents loosening under dynamic loads
• Exceptional corrosion resistance with 316 stainless steel construction for harsh industrial environments
• Integrated flange design eliminates need for separate washers and distributes load over wider surface area
• Precision Class 2B thread fit ensures smooth installation and reliable engagement with mating components
• External hex drive compatibility with standard tools for quick installation and removal
• Fine UNF thread profile provides superior holding power and resistance to vibrational loosening
• Full regulatory compliance with RoHS 3 and REACH standards for global industrial applications

Professional Applications & Engineering Value

Engineered for demanding industrial environments, these 316 stainless steel flange lock nuts combine corrosion resistance with advanced vibration-resistant locking technology. The serrated underside creates permanent bite into mating surfaces, eliminating the need for secondary locking devices in heavy machinery, transportation equipment, and marine applications. The integrated 3/4" flange diameter provides superior load distribution while the UNF fine thread configuration maintains clamping force under extreme vibration. This external hex drive flange nut solution reduces assembly time and ensures long-term reliability in corrosive or high-vibration environments where fastener failure is not an option.

Specification Summary & Compliance

Manufactured to precise Class 2B thread fit standards with 3/8"-24 UNF fine threads and right-hand thread direction. Features a 9/16" width across flats and 11/32" height with 0.13" flange thickness. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and workplace safety standards are met for industrial fastener applications.