S-91855A105 5-40 Cap Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to 18-8 Stainless Steel construction, ensuring long-term reliability in harsh environments
• Enhanced durability and strength for heavy-duty applications, providing secure and lasting fastening solutions
• Precision Class 2B thread fit guarantees smooth assembly and reliable engagement with mating components
• Coarse UNC thread spacing enables quick installation and reduces the risk of cross-threading in industrial settings
• External hex drive design allows for easy tightening with standard tools, improving installation efficiency
• Compliance with RoHS 3 and REACH regulations ensures environmental safety and meets global industry standards
• Right-hand thread direction offers compatibility with common assembly practices, streamlining production processes

Professional Applications & Engineering Value

This 5-40 UNC cap nut is engineered to address critical challenges in industrial and mechanical assemblies where corrosion resistance and structural integrity are paramount. Constructed from 18-8 Stainless Steel, it effectively combats rust and degradation in moist or chemically aggressive environments, reducing maintenance costs and downtime. The coarse thread spacing and Class 2B thread fit ensure rapid, secure fastening without compromising on precision, making it ideal for high-vibration applications in machinery, automotive, and construction sectors. Its external hex drive facilitates straightforward installation with common wrenches, enhancing workflow efficiency while the right-hand thread aligns with standard operational protocols. By integrating this heavy-duty cap nut, engineers achieve reliable performance in demanding conditions, supporting long-term project sustainability and safety.

Specification Summary & Compliance

This cap nut features a 5-40 UNC thread size with coarse spacing and Class 2B thread fit, ensuring dimensional accuracy and compatibility with standard components. It adheres to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, confirming its suitability for regulated industrial applications. Manufactured to precise specifications, including a width of 5/16" and height of 11/32", it meets rigorous quality standards for reliable performance in various engineering contexts.