S-92501A544 1 1/4"-12 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through top lock distorted thread design that maintains tension under extreme conditions
• Enhanced corrosion protection with zinc-plated steel construction for extended service life in harsh environments
• Reliable load-bearing capacity meeting ASTM Grade C standards for heavy-duty industrial applications
• Precision fine threading (1 1/4"-12 UNF) ensures tighter fit and better sealing capabilities
• Easy installation and removal with standard external hex drive compatible with common tools
• Consistent performance with Class 2B thread fit guaranteeing proper engagement and secure fastening
• Environmental compliance meeting both RoHS 3 and REACH regulations for safe industrial use

Professional Applications & Engineering Value

This high-performance 1 1/4"-12 UNF locknut addresses critical vibration-induced loosening challenges in industrial machinery and heavy equipment. The zinc-plated steel construction provides essential corrosion resistance while maintaining the structural integrity required for ASTM Grade C applications. The innovative top lock distorted thread technology creates consistent friction along the mating surface, ensuring maintained clamp load without compromising the Class 2B fine thread integrity. Engineered for external hex drive compatibility, this heavy-duty locknut delivers reliable performance in construction equipment, agricultural machinery, and industrial manufacturing systems where vibration resistance is paramount. The right-hand thread direction and standard profile ensure seamless integration with existing UNF threaded components.

Specification Summary & Compliance

This locknut features precision 1 1/4"-12 UNF fine threads with Class 2B thread fit tolerance, ensuring optimal engagement with mating components. Manufactured to ASTM Grade C standards for consistent strength and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting current environmental and safety standards. Physical dimensions include 1 7/8" width and 1 3/32" height, designed for standard wrench applications with external hex drive configuration.