S-97135A451 1 3/4"-12 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through the nylon insert that maintains locking force in high-stress environments
• Exceptional durability with Grade 8 strength classification for heavy-duty industrial applications
• Reliable high-temperature performance with nylon insert rated for continuous use up to 220°F
• Precise thread engagement with Class 2B thread fit ensuring consistent, secure fastening
• Enhanced corrosion protection from black-oxide steel finish extending service life
• Industry-standard compatibility with UNF fine threads (1 3/4"-12) for seamless integration
• Easy installation and removal with standard external hex drive design

Professional Applications & Engineering Value

This Grade 8 heavy-duty locknut delivers critical vibration resistance in demanding industrial environments where fastener failure is not an option. The nylon insert locking mechanism creates consistent friction against mating threads, effectively preventing loosening from machinery vibration, impact loads, and thermal cycling. Engineered with black-oxide steel construction, this locknut provides superior corrosion resistance while maintaining the high tensile strength required for structural applications, heavy equipment, and automotive assemblies. The UNF fine threads offer greater thread engagement compared to coarse threads, distributing load more evenly and providing enhanced resistance to stripping. With its ability to withstand temperatures up to 220°F, this solution maintains reliability across diverse operating conditions from manufacturing plants to transportation equipment.

Specification Summary & Compliance

This locknut features precision 1 3/4"-12 UNF fine threads with Class 2B thread fit tolerance for optimal engagement. Manufactured to Grade 8 strength specifications, it meets rigorous industrial standards for heavy-duty applications. The product is fully compliant with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) environmental regulations, ensuring safe use across global markets. The external hex drive with standard profile provides compatibility with common wrenching tools for straightforward installation and maintenance.