S-95030A380 1 1/2"-12 Locknuts

Key Features & Benefits at a Glance

• Secure cotter pin locking mechanism prevents loosening under extreme vibration and dynamic loads
• Zinc-plated steel construction provides excellent corrosion resistance for extended service life in harsh environments
• UNF fine thread spacing ensures superior clamping force and vibration resistance compared to coarse threads
• Class 2B thread fit delivers reliable, consistent engagement with mating components
• Standard external hex drive allows for easy installation and removal with common tools
• Heavy-duty 2 1/4" width profile withstands high torque applications without deformation
• Comprehensive compliance with REACH and RoHS 3 environmental standards for global industrial use

Professional Applications & Engineering Value

This 1 1/2"-12 UNF castle locknut delivers critical safety in high-vibration industrial environments where fastener failure is not an option. The zinc-plated steel construction provides durable corrosion protection while the cotter pin locking system creates a positive mechanical lock that cannot vibrate loose. Engineered with UNF fine threads and Class 2B thread fit, this heavy-duty fastener maintains precise clamping force in demanding applications such as agricultural machinery, construction equipment, and transportation systems. The standard hex profile ensures compatibility with standard wrenches, streamlining maintenance procedures while the castle design accommodates standard 5/16" cotter pins for quick, reliable securing.

Specification Summary & Compliance

This castle locknut features 1 1/2"-12 UNF fine threads with Class 2B thread fit and right-hand thread direction. Dimensions include 2 1/4" width across flats and 1 5/16" height with cotter pin slot dimensions of 0.457" minimum depth and 0.37" minimum width. The product is manufactured in compliance with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) environmental standards, ensuring suitability for industrial applications worldwide.