S-90477A113 3/8"-24 Flange Nuts

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with black-oxide steel coating, extending service life in demanding environments
• Superior load distribution from the 7/8" flange diameter, reducing surface pressure and preventing material damage
• Precise fine thread engagement with 3/8"-24 UNF Class 2B threads for reliable, vibration-resistant connections
• Quick installation and removal using standard 11/16" external hex drive, compatible with common tools
• Stable rotating performance maintains integrity under dynamic loads and rotational stress
• Regulatory compliance assurance with RoHS 3 standards, meeting global environmental requirements
• Right-hand thread design ensures compatibility with standard assembly procedures and equipment

Professional Applications & Engineering Value

This black-oxide steel flange nut delivers exceptional engineering value in applications where vibration resistance and corrosion protection are critical. The integrated 7/8" flange eliminates the need for separate washers, distributing clamp load over a wider area to prevent loosening in industrial machinery, automotive assemblies, and rotating equipment. The Class 2B thread fit and UNF fine threading provide superior holding power in high-stress environments where coarse threads might fail. The black-oxide surface treatment creates a protective barrier against moisture and chemicals, making it ideal for outdoor equipment and harsh manufacturing conditions. Its external hex drive ensures straightforward installation with standard wrenches, reducing assembly time and maintenance costs.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2B thread fit and UNF 3/8"-24 fine thread specifications. Features a 0.16" flange thickness and 17/32" height for consistent performance. Complies with RoHS 3 (2015/863/EU) regulations under exemption 6(a) for lead as an alloying element in steel. The right-hand thread direction and rotating performance properties ensure reliable operation in dynamic applications.