S-90636A118 1"-8 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through center lock distorted thread design that maintains secure fastening in high-stress environments
• Exceptional strength and durability with Grade 8 classification, ensuring reliable performance in heavy-duty industrial applications
• Enhanced corrosion protection from black-oxide steel construction, extending service life in demanding conditions
• Precise thread engagement with Class 2B thread fit and UNC coarse threads for quick installation and secure mating
• Industry-standard compatibility with 1"-8 UNC threading and external hex drive for universal tool compatibility
• Environmental compliance assurance meeting both REACH and RoHS 3 standards for safe industrial use
• Optimized dimensional stability with 1-1/2" width and 55/64" height for consistent performance across applications

Professional Applications & Engineering Value

This Grade 8 black-oxide steel locknut delivers critical vibration resistance where conventional fasteners fail. The center lock distorted thread technology creates permanent friction along the thread engagement, effectively preventing loosening under continuous vibration and dynamic loads. Engineered with 1"-8 UNC coarse threading and Class 2B thread fit, it ensures rapid installation while maintaining precise tolerance control. The external hex drive accommodates standard industrial tools, streamlining assembly processes in manufacturing, heavy machinery, construction equipment, and transportation applications. The black-oxide surface treatment provides essential corrosion protection without compromising dimensional integrity, making this heavy-duty locknut ideal for outdoor equipment, industrial machinery, and automotive systems where reliability is paramount.

Specification Summary & Compliance

This locknut features 1"-8 UNC coarse threading with Class 2B thread fit and right-hand thread direction, manufactured to Grade 8 strength standards for maximum load capacity. The dimensional specifications include 1-1/2" width and 55/64" height with standard hex profile. The product is fully compliant with REACH (EC 1907/2006) regulations and RoHS 3 (2015/863/EU) directives, ensuring environmental safety and regulatory adherence for industrial applications worldwide.