S-90477A033 1/2"-13 Flange Nuts

Key Features & Benefits at a Glance

• Integrated Flange Design eliminates need for separate washers, reducing assembly time and providing superior load distribution
• Black-Oxide Steel Construction offers excellent corrosion resistance for extended service life in demanding environments
• 1-1/8" Flange Diameter creates a wider bearing surface to prevent pull-through and distribute clamping force effectively
• Class 2B Thread Fit ensures smooth assembly with standard bolts while maintaining secure fastening integrity
• 1/2"-13 UNC Coarse Threading provides rapid installation and superior resistance to vibration loosening
• Rotating Performance Property enables efficient assembly in applications requiring rotational movement during tightening
• RoHS 3 Compliance meets international environmental standards for use in regulated industries and global markets

Professional Applications & Engineering Value

This heavy-duty flange nut delivers exceptional engineering value through its black-oxide steel construction and integrated 1-1/8" flange design. The rotating performance property makes it ideal for assembly lines and maintenance operations where components require rotation during final tightening. The UNC coarse threading combined with Class 2B thread fit ensures quick, reliable fastening while resisting vibration-induced loosening in machinery, structural frameworks, and industrial equipment. The black-oxide surface treatment provides consistent corrosion protection without compromising dimensional accuracy, making these flange nuts suitable for automotive, construction, and heavy manufacturing applications where reliability and durability are paramount.

Specification Summary & Compliance

This flange nut features 1/2"-13 UNC coarse threads with Class 2B thread fit for standard bolt compatibility. Manufacturing adheres to inch system specifications with 7/8" width across flats and 23/32" height. The product is RoHS 3 (2015/863/EU) compliant with exemption 6(a) for lead as an alloying element in steel, ensuring environmental regulatory compliance for industrial applications worldwide.