S-92501A546 1 1/2"-12 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through top lock distorted thread design, preventing loosening in high-stress environments
• Enhanced corrosion protection with zinc plating, extending service life in industrial conditions
• High-strength performance meeting ASTM Grade C requirements for demanding applications
• Precise thread engagement with Class 2B fit ensuring reliable, consistent fastening
• Easy installation and removal using standard external hex drive with common tools
• Fine thread advantage providing better adjustment control and load distribution
• Environmental compliance with RoHS 3 and REACH standards for safe industrial use

Professional Applications & Engineering Value

This 1 1/2"-12 UNF locknut delivers exceptional performance in vibration-prone industrial applications where fastener integrity is critical. The zinc-plated steel construction combined with top lock distorted thread technology creates a permanent locking solution that withstands extreme dynamic loads and thermal cycling. Engineered with fine UNF threads and Class 2B thread fit, this external hex locknut maintains precise clamping force in heavy machinery, construction equipment, and transportation systems. The distorted thread locking mechanism eliminates the need for secondary locking devices, reducing assembly time while providing reliable, maintenance-free operation in demanding environments where safety and reliability are paramount.

Specification Summary & Compliance

This locknut features 1 1/2"-12 UNF fine threads with Class 2B thread fit tolerance and right-hand thread direction. Manufactured from zinc-plated steel with dimensions of 2 1/4" width and 1 5/16" height. The product complies with ASTM Grade C strength classification and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring regulatory compliance for industrial applications worldwide.