S-90630A217 1 3/4"-8 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through nylon insert locking technology that maintains secure fastening even under extreme conditions
• Exceptional strength and durability with Grade 8 steel construction for heavy-duty industrial applications
• High-temperature performance with nylon insert rated up to 220°F for reliable operation in demanding environments
• Precise thread engagement with UNC coarse Class 2B threads ensuring consistent, reliable installation
• Easy installation and removal with standard external hex drive compatible with common wrench tools
• Environmental compliance assurance meeting both REACH and RoHS 3 standards for safe industrial use
• Optimal dimensional stability with 2 49/64" width and 2 5/16" height providing consistent performance across applications

Professional Applications & Engineering Value

This Grade 8 steel nylon insert locknut delivers exceptional engineering value in demanding industrial environments where vibration resistance is critical. The 1 3/4"-8 UNC coarse thread configuration provides superior holding power in heavy machinery, construction equipment, and transportation applications. The nylon insert locking mechanism effectively counters loosening from constant vibration and thermal cycling, while the external hex drive ensures straightforward installation with standard tools. Engineered to withstand temperatures up to 220°F, this heavy-duty locknut maintains its locking integrity in high-stress applications, preventing costly downtime and maintenance issues. The combination of Class 2B thread fit and robust steel construction makes it ideal for permanent fastening solutions in structural and mechanical assemblies.

Specification Summary & Compliance

This industrial locknut features precise UNC coarse threads with Class 2B fit ensuring optimal engagement and consistent performance. Manufactured to exacting standards with dimensions of 2 49/64" width and 2 5/16" height, the nut maintains dimensional accuracy for reliable fastening. The product is fully compliant with REACH (EC 1907/2006) regulations and RoHS 3 (2015/863/EU) directives, confirming its suitability for industrial applications with strict environmental requirements. The right-hand thread direction and external hex drive design follow industry-standard specifications for compatibility with existing systems and tools.