S-90831A110 1/4"-20 Hex Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel and black-oxide finish, ideal for harsh environments and extended service life.
• Space-saving thin profile (5/32" height) allows for use in tight assemblies without compromising on strength.
• Reliable thread engagement with Class 2B thread fit and coarse UNC threading, ensuring easy installation and vibration resistance.
• High torque application capability via external hex drive design, providing secure fastening with standard tools.
• Regulatory compliance assurance with RoHS 3 and REACH standards, meeting strict industrial safety and environmental requirements.
• Dimensional precision with consistent 1/4"-20 thread size and 7/16" width, guaranteeing interchangeability and fit.
• Right-hand threading convenience for standard assembly processes, reducing installation time and errors.

Professional Applications & Engineering Value

This thin hex nut in black-oxide 316 stainless steel is engineered to address common industrial challenges such as corrosion in marine, chemical, and outdoor settings. The UNC coarse thread and Class 2B thread fit provide excellent resistance to loosening under vibration, making it ideal for machinery, automotive, and structural applications. Its thin profile saves weight and space in compact designs, while the external hex drive allows for high-torque tightening with common wrenches. By combining durability with precise inch system measurements, this nut ensures long-term reliability and reduces maintenance costs in demanding B2B environments.

Specification Summary & Compliance

This hex nut adheres to UNC thread standards with a Class 2B thread fit for consistent accuracy and ease of assembly. Dimensions include a thread size of 1/4"-20, width of 7/16", and height of 5/32". It is manufactured to comply with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets environmental and safety standards for industrial use.