S-91853A041 1 1/2"-6 Locknuts

Key Features & Benefits at a Glance

• Secure Locking Mechanism: Designed with a castle slot for 1/4" cotter pins, ensuring vibration-resistant fastening in high-stress environments.
• Corrosion Resistance: Made from 18-8 stainless steel, offering excellent durability and resistance to rust in harsh industrial conditions.
• Heavy-Duty Construction: With a 2 1/4" width and 1 1/2" height, this locknut provides robust performance for demanding applications.
• Precise Thread Fit: Class 2B thread ensures smooth assembly and reliable engagement with mating components, reducing installation time.
• Standard Coarse Threads: 1 1/2"-6 UNC coarse threads enable quick installation and are less prone to cross-threading in field operations.
• External Hex Drive: Allows for easy tightening with standard tools, improving efficiency in maintenance and assembly tasks.
• Environmental Compliance: REACH and RoHS 3 compliant, meeting stringent regulations for safe use in various industries.

Professional Applications & Engineering Value

This heavy-duty castle locknut is engineered to address critical challenges in industrial settings where vibration and dynamic loads can compromise fastener integrity. The 18-8 stainless steel material provides superior corrosion resistance, making it ideal for applications in marine, automotive, and construction equipment exposed to moisture and chemicals. The castle design with a 1/4" cotter pin slot ensures positive locking, preventing loosening under extreme conditions. With coarse UNC threads and Class 2B fit, it offers reliable performance in assembly lines and field maintenance, reducing downtime and enhancing safety. Its external hex drive simplifies installation, while compliance with REACH and RoHS 3 standards ensures environmental safety, making it a trusted choice for engineers seeking durable and compliant fastening solutions.

Specification Summary & Compliance

This locknut features a 1 1/2"-6 UNC coarse thread with Class 2B thread fit for precise tolerance, ensuring compatibility with standard components. It adheres to industry standards for external hex drive and right-hand thread design, with dimensions including a 2 1/4" width and 1 1/2" height. The product is fully compliant with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) regulations, guaranteeing it meets environmental and safety requirements for industrial use.