S-95195A290 1 1/4"-12 Hex Nuts

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh environments and reducing replacement frequency
• Reliable reverse-threading performance through left-hand thread direction, preventing unintended loosening in specific rotational applications
• Precise thread engagement with Class 2B thread fit and UNF fine thread spacing, ensuring secure, vibration-resistant connections
• Easy installation and removal using standard wrenches on the external hex drive, saving time and labor in assembly
• Durable, standardized dimensions (1 7/8" width, 1 1/16" height) for consistent performance and compatibility with standard tools
• Environmental compliance assurance as RoHS 3 compliant, meeting strict regulatory standards for hazardous substance restrictions
• Optimized for inch-system assemblies with unified fine (UNF) threading, providing high tensile strength in precision engineering applications

Professional Applications & Engineering Value

This left-hand thread hex nut in 18-8 Stainless Steel addresses critical challenges in industrial settings where standard right-hand threads may loosen under counter-clockwise rotation. Its UNF fine thread design and Class 2B thread fit deliver superior clamping force and vibration resistance, essential for machinery, automotive, and aerospace components. The corrosion-resistant material ensures longevity in moist or chemical-exposed environments, while the external hex drive allows for quick servicing with common tools. Engineers value this nut for maintaining assembly integrity in reverse-thread applications, reducing downtime and enhancing safety in high-stress systems.

Specification Summary & Compliance

This hex nut adheres to UNF fine thread standards with a Class 2B thread fit for consistent dimensional accuracy. It is manufactured to inch-system specifications (1 1/4"-12 thread size, 1 7/8" width, 1 1/16" height) and complies with RoHS 3 (2015/863/EU) regulations, ensuring it is free from restricted hazardous substances. The nut meets general industry standards for left-hand thread fasteners, providing reliable performance in assemblies requiring reverse threading.