S-90509A035 5/16"-18 Square Nuts
Square 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 thanks to brass construction, ideal for humid or outdoor environments
- Excellent electrical conductivity for applications requiring reliable grounding or electrical connections
- Precise Class 2B thread fit ensures smooth assembly and reliable engagement with mating components
- Robust external square drive provides superior torque transmission and prevents tool slippage
- Heavy-duty UNC coarse threading delivers faster installation and better performance in high-vibration applications
- REACH and RoHS 3 compliance guarantees environmental safety and regulatory adherence for global supply chains
- Standard inch dimensions (9/16" width, 7/32" height) ensure compatibility with existing industrial equipment
Professional Applications & Engineering Value
This 5/16"-18 UNC brass square nut delivers exceptional performance in demanding industrial environments where corrosion resistance and electrical conductivity are critical. The Class 2B thread fit provides optimal clearance for rapid assembly while maintaining secure fastening, reducing installation time in production lines. The external square drive design allows for high-torque applications without stripping, making it ideal for machinery, electrical enclosures, and marine equipment. The coarse UNC threading ensures reliable performance in high-vibration settings, while the brass material offers natural weather resistance without additional coatings. These features make it particularly valuable for electrical grounding systems, plumbing applications, and outdoor infrastructure where durability and compliance with REACH and RoHS standards are mandatory.
Specification Summary & Compliance
This square nut features 5/16"-18 UNC coarse threading with Class 2B thread fit per ASME standards, ensuring proper clearance and engagement. Dimensions include 9/16" width and 7/32" height with right-hand thread direction. The product is manufactured in compliance with REACH (EC 1907/2006) regarding SVHC substances and RoHS 3 (2015/863/EU) with exemption 6(a)-I for lead as an alloying element, meeting international environmental regulations for industrial components.
