S-91851A630 3/8"-16 Hex Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial environments
• Enhanced load distribution from the extra-wide thin profile design, reducing surface pressure and material stress
• Reliable coarse threading with UNC 3/8"-16 specification for quick assembly and vibration resistance
• Precision Class 2B thread fit ensuring smooth engagement and consistent torque performance
• Optimized external hex drive providing maximum tool access and torque application capability
• Environmental compliance meeting RoHS 3 and REACH standards for sustainable manufacturing
• Space-saving thin profile (15/64" height) enabling use in compact assembly applications

Professional Applications & Engineering Value

This 3/8"-16 UNC hex nut delivers exceptional engineering value through its specialized extra-wide thin profile and 18-8 Stainless Steel composition. The combination addresses critical industrial challenges where space constraints meet corrosion concerns. The coarse thread design provides superior resistance to vibration loosening in heavy machinery, automotive, and construction applications, while the Class 2B thread fit ensures consistent clamping force without galling or seizing. The corrosion-resistant properties of 18-8 stainless steel make these nuts ideal for outdoor equipment, marine environments, and chemical processing facilities where moisture and corrosive elements would compromise ordinary fasteners. The external hex drive accommodates standard wrenching tools for efficient installation and maintenance across diverse assembly lines.

Specification Summary & Compliance

This precision hex nut features 3/8"-16 UNC coarse threading with Class 2B thread fit tolerance for reliable engagement. Manufactured to inch system standards with dimensions of 11/16" width and 15/64" height. The product maintains full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe usage across global industrial markets. Right-hand thread direction and external hex drive style provide standardized installation compatibility.