S-90715A215 1 1/4"-7 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance with nylon insert locking technology that maintains secure fastening in high-motion environments
• Exceptional corrosion resistance thanks to 316 stainless steel construction, ideal for harsh or marine applications
• Reliable high-temperature performance with nylon insert rated up to 220°F, ensuring locking integrity in thermal cycling conditions
• Easy installation and removal with standard external hex drive design compatible with common wrench tools
• Precise thread engagement with Class 2B thread fit providing consistent mating with male threaded components
• Coarse thread advantage with UNC 1 1/4"-7 configuration offering quick assembly and reduced cross-threading risk
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for global industrial applications

Professional Applications & Engineering Value

This 316 stainless steel nylon insert locknut delivers critical vibration resistance where conventional fasteners fail. The nylon insert locking mechanism creates consistent friction against mating threads, preventing loosening under continuous stress while allowing for reusable installation. With its coarse UNC thread profile and Class 2B thread fit, this external hex locknut ensures rapid assembly in manufacturing lines and maintenance operations. The 220°F maximum temperature rating makes it suitable for engine components, industrial machinery, and outdoor equipment exposed to thermal expansion. Engineered for heavy-duty applications requiring reliable locking performance, this fastener solves common challenges in automotive, marine, and construction industries where vibration and corrosion compromise joint integrity.

Specification Summary & Compliance

This locknut features UNC 1 1/4"-7 coarse threads with Class 2B thread fit precision, ensuring dimensional accuracy per industry standards. The external hex drive (1 13/16" width) and standard profile (1 25/64" height) provide compatibility with standard tooling. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming environmental responsibility and material safety for global supply chain requirements.