S-94831A629 1/4"-28 Flange Nuts

Key Features & Benefits at a Glance

• Superior vibration resistance through precision serrations that bite into surfaces, preventing loosening under dynamic loads
• Enhanced corrosion protection with zinc-plated steel construction for extended service life in harsh industrial environments
• Integrated flange design eliminates need for separate washers, distributing clamping force over wider surface area
• Precision Class 2B thread fit ensures smooth assembly and reliable engagement with mating components
• External hex drive compatibility with standard tools for quick installation and removal
• UNF fine threading provides superior resistance to vibration compared to coarse thread alternatives
• Regulatory compliance with REACH and RoHS 3 standards for environmentally responsible manufacturing

Professional Applications & Engineering Value

This 1/4"-28 UNF flange lock nut delivers exceptional performance in demanding applications where vibration-induced loosening compromises safety and reliability. The zinc-plated steel construction provides durable corrosion resistance while the integrated serrated locking mechanism creates permanent friction against mounting surfaces. The 19/32" flange diameter significantly increases bearing surface area, reducing point loading and material stress. Particularly valuable in automotive assemblies, machinery frames, and electrical enclosures, this external hex flange nut combines the convenience of standard tooling with advanced locking technology. The fine UNF threading offers superior resistance to vibrational forces compared to coarse thread alternatives, making it ideal for precision equipment and high-cycle applications.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2B thread fit tolerance for optimal engagement. Features UNF fine threading (1/4"-28) with right-hand orientation and external hex drive (7/16" width). The flange measures 19/32" diameter with 0.08" thickness. Fully compliant with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) environmental regulations, ensuring safe use across industrial sectors.