S-94407A125 3/4"-10 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through nylon insert locking mechanism, preventing loosening in high-motion applications
• Excellent corrosion protection with black-oxide coated 18-8 stainless steel construction for harsh environments
• High-temperature capability with nylon insert rated to 220°F (104°C) for demanding industrial settings
• Reliable thread engagement with UNC coarse threads and Class 2B fit ensuring consistent installation performance
• Easy installation and removal using standard external hex drive with 1-1/16" width for common tool compatibility
• Environmental compliance meeting RoHS 3 and REACH standards for global industrial applications
• Durable construction with 7/8" height providing substantial locking material for long-term fastening security

Professional Applications & Engineering Value

This 3/4"-10 nylon insert locknut delivers critical vibration resistance in demanding industrial applications where secure fastening is paramount. The black-oxide 18-8 stainless steel construction provides exceptional corrosion resistance while the nylon insert locking mechanism maintains tension under continuous vibration and thermal cycling. Engineered with UNC coarse threads and Class 2B fit, this external hex locknut ensures reliable installation in machinery, heavy equipment, and structural assemblies where vibration-induced loosening compromises safety and performance. The combination of material durability and precise thread specifications makes this fastener ideal for automotive, manufacturing, and construction applications requiring long-term reliability in challenging environments.

Specification Summary & Compliance

This heavy-duty locknut features precise 3/4"-10 UNC coarse threads with Class 2B fit tolerance for consistent thread engagement. The external hex design (1-1/16" width) accommodates standard tools while the 7/8" profile provides optimal locking material. Manufactured from 18-8 stainless steel with black-oxide coating, this fastener meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance standards, ensuring environmental responsibility and global regulatory acceptance for industrial applications.