S-91845A042 1 3/8"-6 Hex Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and chemical exposure
• Reliable coarse threading (UNC 1 3/8"-6) ensures faster assembly and reduced cross-threading risk in industrial applications
• Precise Class 2B thread fit guarantees consistent engagement and vibration resistance for long-term joint integrity
• Standard external hex design (2 1/16" width) provides excellent tool accessibility and high torque capability
• Heavy-duty dimensions (1 11/64" height) deliver enhanced load distribution and mechanical strength
• Full regulatory compliance with RoHS 3 and REACH standards for safe use in global industrial markets
• Right-hand thread orientation simplifies installation and maintenance procedures

Professional Applications & Engineering Value

Engineered for demanding industrial environments, this 1 3/8"-6 UNC coarse thread hex nut addresses critical challenges in heavy machinery, structural assemblies, and chemical processing equipment. The 18-8 stainless steel composition provides exceptional resistance to corrosion and oxidation, significantly extending service life in moisture-rich or chemically aggressive settings. The coarse thread profile and Class 2B thread fit work in tandem to prevent loosening under vibration while enabling rapid installation in time-sensitive maintenance operations. With its standard external hex drive and substantial 2 1/16" width, the nut accommodates standard wrenching tools for secure fastening in confined spaces, making it particularly valuable for construction, marine, and manufacturing applications where reliability and chemical resistance are paramount.

Specification Summary & Compliance

This hex nut maintains Class 2B thread fit tolerance per UNC standards, ensuring precise thread engagement and dimensional accuracy. Manufactured to inch system specifications with right-hand coarse threading (1 3/8"-6 UNC), it delivers consistent performance across industrial applications. The product fully complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting the latest environmental and safety standards for industrial components.