S-90670A150 2-56 ASME B18.6.3 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 6061 aluminum construction for extended service life in harsh environments
- Precise thread engagement with Class 2B fit ensures reliable fastening and vibration resistance
- Standard external hex drive design provides excellent tool accessibility and torque transmission
- Industry-standard compliance with ASME B18.6.3 guarantees consistent quality and interchangeability
- Environmental regulation compliance with REACH and RoHS 3 meets modern manufacturing requirements
- Lightweight aluminum construction reduces overall assembly weight without compromising strength
- Coarse UNC threading enables quick assembly and disassembly while resisting cross-threading
Professional Applications & Engineering Value
Our 2-56 UNC coarse thread hex nuts manufactured from 6061 aluminum deliver exceptional performance in precision assemblies where weight reduction and corrosion resistance are critical. The external hex drive configuration ensures maximum torque application with standard tools, while the Class 2B thread fit provides consistent engagement without binding. These ASME B18.6.3 compliant nuts are engineered for electronics enclosures, aerospace components, and instrumentation where aluminum's lightweight properties and environmental compliance are essential. The coarse thread design resists vibration loosening and accommodates thermal expansion variations, making them ideal for industrial applications requiring reliable, repeated disassembly.
Specification Summary & Compliance
This 2-56 UNC coarse thread hex nut features precise Class 2B thread fit tolerances with dimensions of 3/16" width and 1/16" height. Manufactured in compliance with ASME B18.6.3 standards for dimensional consistency and performance. The product meets REACH (EC 1907/2006) compliance for substance restrictions and RoHS 3 (2015/863/EU) compliance with exemption 6(b)-II for lead as an alloying element in aluminum machining applications, ensuring regulatory adherence for global industrial use.
