S-90619A440 7/8"-14 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through steel insert locking technology, preventing loosening in high-stress environments
• High-strength Grade 5 steel construction ensures reliable performance under heavy loads and extreme conditions
• Precision UNF fine threading (7/8"-14) provides superior engagement and clamping force compared to coarse threads
• Class 2B thread fit guarantees consistent, reliable mating with male threads without binding
• External hex drive design allows for standard wrench access and high torque application
• RoHS 3 compliance meets environmental regulations for industrial use worldwide
• Durable right-hand threading maintains secure fastening in standard rotational applications

Professional Applications & Engineering Value

This Grade 5 steel locknut with steel insert locking technology addresses critical vibration-induced loosening in heavy machinery, automotive assemblies, and industrial equipment. The 7/8"-14 UNF fine thread configuration delivers enhanced thread engagement and superior resistance to dynamic loads, making it ideal for applications where permanent fastening solutions are essential. The external hex drive facilitates quick installation and removal using standard tools, while the steel insert maintains consistent locking force throughout the nut's service life. Engineered for heavy-duty applications in manufacturing, construction, and transportation sectors, this locknut provides reliable performance where vibration resistance and thread integrity are paramount.

Specification Summary & Compliance

This locknut features Class 2B thread fit per UNF standards, ensuring precise tolerance and compatibility with mating components. Manufactured from Grade 5 steel for optimal strength-to-weight ratio, the nut measures 1 5/16" across flats with 7/8" height. The product is RoHS 3 (2015/863/EU) compliant and meets industry standards for external hex locknuts with right-hand fine threading. The steel insert locking mechanism provides consistent performance across temperature variations and demanding service conditions.