S-91851A030 5/16"-18 Hex Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh environments and reducing maintenance costs.
• Enhanced grip and reduced installation time due to the extra-wide thin profile, allowing for better tool engagement and faster assembly.
• Reliable coarse threading (UNC) provides excellent resistance to vibration loosening and ensures quick, easy starts in various materials.
• Precise Class 2B thread fit guarantees consistent performance and secure fastening with standard 5/16"-18 bolts.
• Durable external hex drive offers high torque capability and minimizes wear during repeated use with common tools.
• Compliance with RoHS 3 and REACH standards ensures environmental safety and meets global regulatory requirements for industrial applications.
• Compact 13/64" height saves space in tight assemblies without compromising strength, perfect for weight-sensitive designs.

Professional Applications & Engineering Value

This 5/16"-18 UNC hex nut is engineered to address common industrial challenges such as corrosion, vibration, and space constraints. The 18-8 Stainless Steel material provides excellent resistance to rust and chemical exposure, making it suitable for outdoor equipment, marine applications, and food processing machinery. Its extra-wide thin profile and coarse thread design facilitate quick installation and secure holds in high-vibration environments like automotive assemblies and construction projects. The external hex drive ensures compatibility with standard wrenches, reducing tooling costs and improving workflow efficiency. By incorporating RoHS and REACH compliance, it supports sustainable manufacturing practices while delivering reliable performance in demanding settings.

Specification Summary & Compliance

This hex nut features a 5/16"-18 UNC coarse thread with Class 2B thread fit for precise dimensional accuracy and easy assembly. Key dimensions include a width of 9/16" and height of 13/64", adhering to standard inch measurements. It is manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for global industrial use.