S-90759A670 1/2"-20 Flange Nuts
Flange Nuts
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Basic Information
Dimension Parameters
Thread Parameters
Head Parameters
Flange Parameters
Material & Strength Parameters
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Key Features & Benefits at a Glance
- Enhanced vibration resistance through UNF fine threading that maintains secure fastening under dynamic loads
- Superior corrosion protection with black-oxide steel construction for extended service life in demanding environments
- Maximum thread engagement reliability with Class 3B fit ensuring precise, secure connections without play
- Optimized load distribution thanks to the 7/8" flange diameter that reduces surface pressure and prevents damage
- Secure high-torque installation enabled by the external 12-point drive design for reliable wrench engagement
- Industry-standard compatibility with UNF thread specifications for seamless integration into existing inch-system assemblies
- Durable structural integrity from standard hex nut profile providing robust performance in heavy-duty applications
Professional Applications & Engineering Value
This black-oxide steel flange nut delivers critical engineering solutions where vibration resistance and corrosion protection are paramount. The UNF fine threading (1/2"-20) combined with Class 3B thread fit creates exceptionally tight, reliable connections that withstand cyclic loading in automotive, machinery, and structural applications. The integrated 7/8" flange eliminates the need for separate washers while distributing clamp load over a wider area, preventing surface damage and maintaining joint integrity. The external 12-point drive facilitates secure installation in confined spaces, making this flange nut ideal for assembly lines and maintenance operations requiring both speed and precision in inch-system environments.
Specification Summary & Compliance
Manufactured to precise UNF thread standards with Class 3B thread fit for superior dimensional accuracy and consistent performance. The nut features right-hand fine threading (1/2"-20) with standard hex profile (5/8" width) and 17/32" height. Complies with industry standards for inch-system fasteners and features black-oxide surface treatment that meets corrosion protection requirements for industrial applications.
