S-90640A320 3/4"-10 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through nylon insert locking mechanism, preventing loosening in high-motion applications
• Enhanced corrosion protection with zinc-plated steel construction for extended service life in demanding environments
• Reliable high-temperature performance with nylon insert rated up to 220°F (104°C) for industrial applications
• Easy installation and removal with standard external hex drive design compatible with common wrench tools
• Precise thread engagement with UNC coarse threads and Class 2B fit ensuring consistent, secure fastening
• Heavy-duty construction with 1-1/16" width and 7/8" height providing robust mechanical strength
• Compliance assurance meeting RoHS 3 and REACH environmental standards for global industrial use

Professional Applications & Engineering Value

This 3/4"-10 nylon insert locknut delivers critical vibration resistance where conventional fasteners fail. The zinc-plated steel construction provides durable corrosion protection while the nylon insert creates consistent locking force without damaging mating threads. Engineered with UNC coarse threads and Class 2B fit, this external hex locknut ensures reliable performance in heavy machinery, automotive assemblies, and industrial equipment subjected to constant vibration and thermal cycling up to 220°F. The combination of mechanical strength and environmental compliance makes it ideal for OEM and MRO applications requiring dependable, long-term fastening solutions.

Specification Summary & Compliance

This locknut features 3/4"-10 UNC coarse threads with Class 2B thread fit for precise dimensional accuracy. Manufactured to industry standards for external hex locknuts with dimensions of 1-1/16" width and 7/8" height. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and global market acceptance for industrial applications.