S-90372A311 4-40 Socket Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and long-term reliability.
• Secure, low-profile fastening thanks to the socket head and 1/8" hex drive, allowing for tight installations in confined spaces.
• Optimized thread engagement with the partially threaded UNC coarse thread design, reducing the risk of cross-threading and ensuring quicker assembly.
• Consistent, reliable fit achieved through Class 2B thread fit, providing smooth engagement and reducing assembly time and effort.
• Enhanced durability and strength from the inch-system manufacturing, built to withstand vibration and maintain clamp load.
• Broad compatibility with 0.202" hole diameters, making it a versatile choice for various precision assembly applications.
• Compliance with global standards including REACH and RoHS 3, ensuring safety and environmental responsibility in your supply chain.

Professional Applications & Engineering Value

This 4-40 UNC socket head cap nut is engineered to address common industrial challenges such as space constraints and corrosion in precision assemblies. The 18-8 stainless steel material offers excellent resistance to rust and oxidation, making it suitable for applications in electronics, machinery, and outdoor equipment where exposure to moisture is a concern. Its partially threaded design with coarse UNC threads ensures faster installation and reduces the likelihood of thread stripping, while the 1/8" hex drive allows for efficient torque application in tight spaces. This nut is ideal for securing components in 0.202" hole diameter setups, providing a reliable, vibration-resistant fastening solution that maintains integrity under stress, thereby minimizing maintenance needs and downtime in B2B operations.

Specification Summary & Compliance

This nut adheres to UNC coarse thread standards with a Class 2B thread fit for consistent dimensional accuracy and ease of assembly. It complies with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) regulations, ensuring it is free from hazardous substances. The specifications include a thread size of 4-40, right-hand threading, and precise dimensions (OD: 0.18", Height: 0.17", Thread Depth: 0.08"), manufactured to meet industry standards for reliable performance in technical and engineering applications.