S-93126A120 1 1/2"-12 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through nylon insert locking technology that maintains secure fastening under dynamic loads
• Enhanced corrosion protection with black-phosphate steel coating for extended service life in demanding environments
• High-temperature performance with nylon insert rated for continuous operation up to 250°F (121°C)
• Precise thread engagement with Class 2B thread fit ensuring reliable, consistent installation and removal
• Optimized profile design featuring extra-wide thin hex configuration for improved wrench access and space efficiency
• Proven structural integrity meeting ASTM Grade C strength requirements for heavy-duty applications
• Regulatory compliance with REACH and RoHS 3 standards for environmentally responsible manufacturing

Professional Applications & Engineering Value

This 1 1/2"-12 UNF nylon insert locknut delivers critical vibration resistance in high-stress industrial environments where loosening under dynamic loads poses significant safety risks. The black-phosphate steel construction provides essential corrosion protection while maintaining the structural integrity required for heavy machinery, automotive assemblies, and construction equipment. The extra-wide thin profile offers superior wrench clearance in confined spaces, while the fine UNF threads ensure precise engagement with mating components. With temperature resistance up to 250°F, this locknut maintains its locking capability in elevated temperature applications, making it ideal for engine components, industrial motors, and power transmission systems where thermal cycling is common.

Specification Summary & Compliance

Manufactured to exacting standards with Class 2B thread fit for precise engagement and consistent performance. The locknut features UNF fine threads (1 1/2"-12) with right-hand direction and meets ASTM Grade C strength requirements. Compliant with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) environmental regulations, ensuring safe use across various industrial sectors. Dimensions include 2 3/8" width and 1 5/16" height with external hex drive for standard tool compatibility.