S-90621A065 1 1/2"-6 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through precision-engineered steel insert locking mechanism for reliable performance in high-stress environments
• Exceptional load-bearing capacity with Grade 8 steel construction, ensuring maximum strength for heavy-duty applications
• Enhanced grip and torque application with extra wide hex profile (2 3/8" width) for easier installation and removal
• Reliable thread engagement with Class 2B thread fit and coarse UNC threading for secure fastening in demanding conditions
• Durable external hex drive design provides superior tool access and prevents rounding during high-torque applications
• Environmental compliance assurance with RoHS 3 (2015/863/EU) compliance for safe use across regulated industries
• Optimized dimensional stability with substantial 1 11/16" height providing increased thread contact for enhanced locking performance

Professional Applications & Engineering Value

This Grade 8 steel locknut delivers critical vibration resistance in heavy machinery, construction equipment, and industrial applications where constant motion and stress threaten fastener integrity. The steel insert locking mechanism creates permanent friction against mating threads, preventing loosening under extreme vibration and dynamic loads. The extra wide hex profile and external hex drive design allow for higher torque application without tool slippage, while the coarse UNC threading ensures quick installation and reliable performance in challenging environments. Engineered for structural applications, mining equipment, and transportation systems, this heavy-duty locknut maintains clamping force where standard fasteners would fail, reducing maintenance frequency and enhancing operational safety.

Specification Summary & Compliance

Manufactured to precise dimensional standards with 2 3/8" width and 1 11/16" height, featuring Class 2B thread fit for optimal clearance and engagement. Thread specifications include 1 1/2"-6 UNC coarse thread with right-hand direction. Compliant with RoHS 3 (2015/863/EU) environmental standards and manufactured to Grade 8 strength classification for superior mechanical properties and reliability in industrial applications.