S-91837A029 1/4"-20 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through distorted top lock thread technology that maintains tension under dynamic loads
• Enhanced corrosion protection with zinc-plated steel construction for extended service life in industrial environments
• Reliable fastening performance with Grade 2 strength rating ensuring consistent clamping force
• Easy installation and removal with standard external hex drive design compatible with common tools
• Precise thread engagement through Class 2B thread fit for smooth assembly and reduced cross-threading risk
• Environmental compliance assurance meeting RoHS 3 and REACH standards for regulated applications
• Broad compatibility with 1/4"-20 UNC coarse thread fasteners commonly used across industries

Professional Applications & Engineering Value

This zinc-plated steel locknut addresses critical vibration-induced loosening challenges in industrial assemblies. The distorted top lock thread creates consistent interference that resists rotational forces, making it ideal for machinery, automotive, and equipment applications where constant motion threatens fastener integrity. The UNC coarse thread provides rapid installation while maintaining strength, and the external hex drive ensures compatibility with standard wrenches. Engineered with Grade 2 strength classification, this locknut delivers reliable performance in medium-duty applications without compromising on durability. The zinc plating offers essential corrosion resistance for environments exposed to moisture or chemicals, while the precise Class 2B thread fit ensures smooth engagement with mating components, reducing assembly time and potential damage.

Specification Summary & Compliance

This industrial locknut features 1/4"-20 UNC coarse threads with Class 2B thread fit for standard tolerance applications. The right-hand threaded, top lock distorted thread design follows industry standards for locking fasteners. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring restricted substance compliance. The Grade 2 strength rating confirms mechanical properties suitable for general industrial use, while the 7/16" hex width and 7/32" height provide standardized dimensions for consistent performance across applications.