S-91240A031 3/8"-16 Fed. Spec. FF-N-836, MS35649-2384, Fed. Spec. QQ-P-35 Hex Nuts
Hex Nuts
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Basic Information
Dimension Parameters
Thread Parameters
Head Parameters
Material & Strength Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and outdoor applications
- Precise thread engagement with Class 2B fit ensures reliable, vibration-resistant fastening in industrial assemblies
- Coarse UNC threading allows for quicker installation and reduced cross-threading risks in high-volume production
- Standard external hex drive provides excellent torque transmission and compatibility with common wrenching tools
- Full regulatory compliance with RoHS 3 and REACH standards, meeting global environmental and safety requirements
- Heavy-duty durability backed by military-grade specifications (FF-N-836, MS35649-2384) for mission-critical applications
- Optimized dimensions (5/8" width × 1/4" height) deliver balanced strength-to-weight ratio without compromising structural integrity
Professional Applications & Engineering Value
This 3/8"-16 UNC hex nut delivers exceptional engineering value through its 18-8 stainless steel composition and Class 2B thread fit, specifically designed to address common industrial challenges. The material's inherent corrosion resistance prevents degradation in moisture-rich environments, while the coarse thread profile maintains secure fastening under dynamic loads and vibration. Manufacturing and assembly operations benefit from the external hex drive design, which enables efficient installation with standard tools while meeting stringent military specifications FF-N-836 and MS35649-2384. These characteristics make it ideal for machinery, structural frameworks, and transportation equipment where long-term reliability and regulatory compliance are critical.
Specification Summary & Compliance
This hex nut features 3/8"-16 UNC coarse threading with Class 2B thread fit per standard inch-system requirements. Manufacturing adheres to Fed. Spec. FF-N-836, MS35649-2384, and QQ-P-35 for dimensional accuracy and performance consistency. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global markets.
