S-92501A539 1"-8 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through top lock distorted thread design that maintains secure fastening under dynamic loads
• Enhanced corrosion protection with zinc-plated steel construction for extended service life in harsh industrial environments
• Reliable mechanical performance meeting ASTM Grade C strength requirements for heavy-duty applications
• Quick installation and removal with standard external hex drive profile using common wrench tools
• Precise thread engagement with Class 2B UNC coarse threads ensuring consistent fit and reduced cross-threading risk
• Environmental compliance with RoHS 3 and REACH regulations for safe use across regulated industries
• Optimized for high-vibration applications where standard nuts would loosen, providing maintenance-free operation

Professional Applications & Engineering Value

Engineered specifically for high-vibration industrial environments, these 1"-8 UNC coarse thread locknuts solve critical fastening challenges in machinery, construction equipment, and transportation systems. The top lock distorted thread technology creates permanent friction along the thread engagement, effectively resisting loosening from shock loads and continuous vibration. Manufactured from zinc-plated steel with ASTM Grade C certification, these locknuts deliver consistent clamping force while providing corrosion resistance. The external hex drive allows for standard tooling compatibility, streamlining installation in confined spaces. Ideal for assembly lines, heavy equipment maintenance, and structural applications where vibration-induced failure is a primary concern.

Specification Summary & Compliance

This heavy-duty locknut features 1"-8 UNC coarse threads with Class 2B thread fit for precise dimensional accuracy. The distorted thread locking mechanism operates on the top section of the nut, maintaining right-hand thread direction compatibility. Manufacturing complies with ASTM Grade C strength specifications, while meeting RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards. Physical dimensions include 1-1/2" width across flats and 55/64" height for standard wrench clearance requirements.