S-94831A760 4-40 Flange Nuts
Flange Nuts
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Basic Information
Dimension Parameters
Thread Parameters
Head Parameters
Flange Parameters
Material & Strength Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Superior vibration resistance through serrated locking technology that prevents loosening under dynamic loads
- Enhanced corrosion protection with zinc-plated steel construction for extended service life in harsh environments
- Reliable thread engagement with Class 2B fit ensuring consistent performance and easy assembly
- Increased bearing surface from 25/64" flange diameter distributing clamp load more effectively
- Quick installation using standard external hex drive compatible with common industrial tools
- Optimal material strength from steel construction providing durability in demanding applications
- Regulatory compliance meeting both REACH and RoHS 3 standards for global industrial use
Professional Applications & Engineering Value
This 4-40 UNC flange locknut delivers critical vibration resistance in industrial equipment, machinery, and automotive assemblies where constant motion threatens fastener integrity. The zinc-plated steel construction provides essential corrosion protection while maintaining structural strength. Engineered with serrated locking technology beneath the flange, these nuts create positive locking action that eliminates the need for secondary locking devices. The coarse thread spacing and Class 2B thread fit ensure reliable engagement even in applications where thread damage is a concern. The integrated flange eliminates separate washers, streamlining assembly in tight spaces while providing superior load distribution. Ideal for vibration-prone environments including motors, conveyors, and heavy equipment where maintenance access is limited.
Specification Summary & Compliance
This flange locknut features 4-40 UNC coarse threads with Class 2B thread fit for reliable engagement and right-hand thread direction. Manufacturing specifications include 25/64" flange diameter, 1/4" width across flats, and 5/32" height. The product is fully compliant with REACH (EC 1907/2006) regulations and RoHS 3 (2015/863/EU) directives, ensuring environmental responsibility and global market acceptance for industrial applications.
