S-91855A112 9/16"-12 Cap Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and outdoor applications.
• High-strength, coarse UNC thread ensures quick assembly and reliable holding power in demanding mechanical setups.
• Precise Class 2B thread fit guarantees smooth engagement and consistent performance with standard male threads.
• External hex drive design provides excellent torque transmission and easy installation using common wrenches.
• Durable standard cap profile offers a finished appearance while protecting threads from damage and contamination.
• Full regulatory compliance with RoHS 3 and REACH standards, meeting strict environmental and safety requirements for global supply chains.
• Right-hand threading simplifies installation processes, reducing assembly time and potential errors in fastening operations.

Professional Applications & Engineering Value

This 9/16"-12 UNC cap nut delivers exceptional engineering value through its 18-8 stainless steel composition and coarse thread design. The material's inherent corrosion resistance solves critical durability issues in applications exposed to moisture, chemicals, or temperature variations, significantly extending service life in industrial machinery, marine equipment, and structural assemblies. The external hex drive configuration enables high-torque installation without stripping, while the Class 2B thread fit ensures reliable mating with corresponding fasteners, eliminating play and vibration-induced loosening. These features make it particularly valuable for heavy-duty applications where fastener integrity directly impacts operational safety and maintenance intervals, providing engineers with a compliant solution that withstands rigorous industrial demands.

Specification Summary & Compliance

This cap nut features 9/16"-12 UNC coarse threads with Class 2B thread fit for standard tolerance applications. Manufacturing adheres to inch system specifications with dimensions of 7/8" width and 15/16" height. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material transparency for industrial and commercial use.