S-91078A205 1/4"-28 Hex Nuts

Key Features & Benefits at a Glance

• Enhanced Corrosion Resistance: Zinc-plated steel construction provides reliable protection against rust and environmental degradation, extending service life in harsh industrial settings.
• Space-Saving Thin Profile: With a height of just 5/32", this nut is ideal for applications with limited clearance without compromising on strength.
• Precision Thread Fit: Class 2B thread fit ensures smooth, reliable engagement with mating components, reducing the risk of cross-threading and assembly errors.
• Superior Fine Thread Performance: 1/4"-28 UNF fine threads offer increased clamping force and better vibration resistance compared to coarse threads in dynamic applications.
• High-Strength Grade 2 Rating: Meets Grade 2 mechanical properties, providing dependable load-bearing capacity for general industrial and automotive uses.
• Easy External Hex Drive: Standard 7/16" hex width allows for quick installation and removal with common wrenches, improving maintenance efficiency.
• Regulatory Compliance Assurance: Conforms to RoHS 3 and REACH standards, ensuring safe use in regulated industries and global market acceptance.

Professional Applications & Engineering Value

This 1/4"-28 UNF thin hex nut is engineered to address critical challenges in assembly-intensive industries where space constraints and corrosion are primary concerns. The zinc-plated steel material delivers excellent durability against moisture and chemicals, making it suitable for automotive subsystems, machinery enclosures, and outdoor equipment. Its fine thread design enhances vibration resistance in high-stress environments, preventing loosening under dynamic loads. The thin profile allows integration into compact designs without sacrificing performance, while the Class 2B thread fit ensures consistent, reliable fastening in production lines. Ideal for OEMs and MRO applications, this nut combines precision manufacturing with compliance to meet rigorous industrial standards.

Specification Summary & Compliance

This hex nut features a 1/4"-28 UNF fine thread with Class 2B thread fit for precise dimensional accuracy per UNF standards. Key dimensions include a width of 7/16" and height of 5/32", manufactured from Grade 2 zinc-plated steel for consistent mechanical performance. The product complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for global industrial supply chains.