S-90477A117 7/8"-14 Flange Nuts

Key Features & Benefits at a Glance

• Superior load distribution with 1-3/4" flange diameter to prevent surface damage and maintain joint integrity under high stress
• Enhanced corrosion resistance through Black-Oxide Steel finish for reliable performance in demanding industrial environments
• Precise thread engagement with Class 2B fine UNF threads ensuring vibration resistance and secure fastening in critical applications
• Optimized installation efficiency featuring external hex drive and standard profile for compatibility with common tools and reduced assembly time
• Exceptional durability with rotating performance properties that accommodate movement while maintaining clamping force
• Regulatory compliance assurance meeting RoHS 3 standards for environmentally conscious manufacturing and global market acceptance
• Robust structural integrity from solid steel construction with 1-1/8" height providing maximum thread engagement and shear strength

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, this 7/8"-14 UNF flange nut solves critical fastening challenges in machinery, construction, and automotive assemblies. The Black-Oxide Steel construction provides essential corrosion protection where environmental exposure threatens component longevity. With its 1-3/4" flange diameter, the nut distributes clamping force across a wider surface area, preventing material deformation and maintaining joint integrity in high-vibration environments. The Class 2B fine threads deliver precise engagement with mating components, while the rotating capability accommodates thermal expansion and dynamic loads without compromising fastener security. This combination of features makes it ideal for applications requiring reliable performance under continuous stress and movement.

Specification Summary & Compliance

This flange nut features 7/8"-14 UNF fine threads with Class 2B thread fit per Unified Thread Standard specifications, ensuring precise dimensional accuracy and reliable mating performance. Manufactured from steel with Black-Oxide finish, it maintains a 1-3/4" flange diameter and 0.44" flange thickness for optimal load distribution. The product is RoHS 3 (2015/863/EU) compliant with exemption 6(a) for lead as an alloying element in steel, meeting international environmental regulations for industrial components.