S-90477A112 5/16"-24 Flange Nuts

Key Features & Benefits at a Glance

• Enhanced Load Distribution - The 3/4" flange diameter provides a wider bearing surface, reducing surface pressure and preventing damage to assembled materials.
• Superior Corrosion Resistance - Black-oxide steel construction offers excellent protection against rust and oxidation in harsh industrial environments.
• Precision Fastening - Class 2B thread fit with UNF fine threads ensures reliable, vibration-resistant connections with minimal risk of cross-threading.
• Efficient Installation - External hex drive design allows for quick, secure tightening using standard tools, improving assembly speed.
• Durable Performance - Rotating capability and steel flange material maintain integrity under dynamic loads and repeated adjustments.
• Regulatory Compliance - Meets REACH and RoHS 3 standards, ensuring safe, environmentally responsible use in global markets.
• Optimal Dimensions - Compact 9/16" width and 7/16" height enable space-efficient designs without sacrificing strength.

Professional Applications & Engineering Value

This 5/16"-24 UNF flange nut is engineered to address critical challenges in industrial assembly, where vibration loosening and corrosion are common failures. The black-oxide steel material provides a robust barrier against moisture and chemicals, extending service life in automotive, machinery, and outdoor equipment applications. Its UNF fine thread design delivers higher tensile strength and better fatigue resistance compared to coarse threads, making it ideal for precision components subjected to dynamic stresses. The integrated flange eliminates the need for separate washers, streamlining installation and reducing part counts in heavy-duty assemblies. By combining Class 2B thread fit accuracy with a rotating feature, this nut maintains clamp force under thermal cycling and mechanical shocks, ensuring long-term joint integrity in demanding engineering environments.

Specification Summary & Compliance

This flange nut adheres to inch system standards with a 5/16"-24 UNF fine thread and Class 2B thread fit tolerance for consistent engagement. The manufacturing process follows industry specifications for external hex drive fasteners, with a flange diameter of 3/4" and thickness of 0.14" for optimal performance. It is fully compliant with REACH (EC 1907/2006) regarding substance restrictions and RoHS 3 (2015/863/EU) directives on hazardous materials, ensuring environmental and safety standards are met for industrial distribution.