S-92671A005 4-40 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 from high-quality brass material, ensuring long-term reliability in humid or demanding environments.
- Excellent electrical conductivity ideal for applications requiring grounding or electrical connections without interference.
- Precise Class 2B thread fit guarantees smooth assembly and secure fastening with standard UNC 4-40 bolts.
- Coarse UNC threading enables quick installation and reduced cross-threading risks in industrial settings.
- Standard 1/4" hex profile allows for easy tightening with common wrenches, improving workflow efficiency.
- RoHS 3 and REACH compliance ensures environmental safety and meets strict international regulatory standards.
- Durable right-hand external hex drive provides reliable torque transmission and resists stripping during repeated use.
Professional Applications & Engineering Value
Engineered for demanding industrial environments, these 4-40 UNC brass hex nuts deliver exceptional performance where corrosion resistance and electrical properties are critical. The Class 2B thread fit maintains precise tolerances with standard UNC coarse threads, preventing loosening under vibration while facilitating rapid assembly in electronics, marine hardware, and plumbing systems. The brass construction naturally resists oxidation and galvanic corrosion, making these nuts ideal for electrical enclosures, instrumentation panels, and outdoor equipment where moisture exposure is common. Their external hex drive design ensures compatibility with standard tools, reducing installation time and minimizing fastener failure in high-volume production lines.
Specification Summary & Compliance
This inch-system hex nut features UNC 4-40 coarse threading with Class 2B thread fit per ASME B18.2.2 standards, ensuring dimensional accuracy across batches. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming absence of restricted substances. Physical dimensions maintain 1/4" width across flats and 3/32" height for consistent performance in right-hand thread applications.
