S-97135A429 3/4"-10 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through nylon insert locking mechanism that maintains secure fastening in high-motion applications
• Exceptional temperature tolerance with nylon insert rated for continuous operation up to 220°F (104°C)
• High-strength performance with Grade 8 steel construction ensuring reliable performance in demanding industrial environments
• Enhanced corrosion protection from black-oxide coating that provides durable surface finish for extended service life
• Precision thread engagement with Class 2B UNC coarse threads ensuring consistent, reliable mating with mating components
• Easy installation and removal through standard external hex drive design compatible with common wrench tools
• Environmental compliance assurance meeting both REACH and RoHS 3 standards for responsible manufacturing

Professional Applications & Engineering Value

This Grade 8 nylon insert locknut delivers critical vibration resistance in demanding industrial applications where loosening under dynamic loads poses significant safety and performance risks. The black-oxide steel construction provides essential corrosion protection while maintaining the high tensile strength required for heavy machinery, automotive assemblies, and structural applications. The UNC coarse thread profile with Class 2B fit ensures rapid installation and reliable engagement, particularly valuable in maintenance scenarios where speed and certainty are paramount. The nylon insert maintains consistent locking force across the operational temperature range up to 220°F, making this 3/4"-10 locknut ideal for engine components, power transmission systems, and industrial equipment subject to thermal cycling and mechanical stress.

Specification Summary & Compliance

This locknut features precision 3/4"-10 UNC coarse threads with Class 2B thread fit for consistent mating performance. The external hex drive (1-1/16" width) accommodates standard wrenching tools, while the 7/8" height provides optimal nylon insert engagement. Manufactured from Grade 8 steel with black-oxide finish, the component complies with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) environmental standards, ensuring regulatory compliance for industrial applications worldwide.