S-97135A280 3/4"-10 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through nylon insert locking technology that maintains secure fastening in high-motion environments
• Exceptional durability with Grade 8 steel construction providing higher tensile strength than standard locknuts
• Reliable high-temperature performance with nylon insert rated for continuous operation up to 220°F without compromising locking capability
• Enhanced corrosion protection through zinc yellow-chromate plating that resists industrial environmental degradation
• Precise thread engagement with Class 2B thread fit ensuring smooth installation and consistent clamping force
• Industry-standard compatibility with 3/4"-10 UNC coarse threads for broad application across industrial equipment
• Easy installation and removal with standard external hex design allowing use with common wrench tools

Professional Applications & Engineering Value

This Grade 8 heavy-duty nylon insert locknut delivers critical vibration resistance in demanding industrial environments where loosening under dynamic loads poses significant safety risks. The zinc yellow-chromate plated steel construction provides dual protection against corrosion while maintaining the high tensile strength required for heavy machinery, automotive, and construction applications. The nylon insert locking mechanism creates consistent friction against bolt threads, effectively dampening vibrations that cause conventional nuts to back off. With its 220°F temperature rating and UNC coarse thread design, this locknut maintains reliable performance in high-temperature operations and rapid assembly scenarios common in manufacturing and equipment maintenance. The Class 2B thread fit ensures precise engagement without galling, reducing installation time while providing predictable clamping force throughout the fastener's service life.

Specification Summary & Compliance

This locknut features 3/4"-10 UNC coarse threads with Class 2B thread fit for precise dimensional accuracy and compatibility with standard mating components. Manufactured from high-strength steel to meet Grade 8 specifications, it provides superior mechanical properties for heavy-duty applications. The external hex drive design (1-1/16" width) accommodates standard wrenching tools while the 7/8" height provides optimal nylon insert engagement. The zinc yellow-chromate plating offers corrosion protection in accordance with industry standards. Product complies with relevant industrial specifications for locknut performance and material composition.