S-90519A891 1 1/2"-6 ASTM A108 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 black-oxide steel coating, extending service life in demanding industrial environments
- Enhanced torque transmission through external hex drive design, ensuring secure fastening with standard tools
- Space-saving thin profile allows installation in confined areas where standard nuts won't fit
- Reliable left-hand threading provides counter-rotational security in applications with reverse-direction vibration
- Precision UNC coarse threading enables quick assembly and reduced cross-threading risk
- Consistent performance guaranteed by ASTM A108 material specifications and Grade 2 strength classification
- Regulatory compliance with RoHS 3 and REACH standards for global industrial applications
Professional Applications & Engineering Value
This left hand thread hex nut addresses critical engineering challenges in heavy machinery, conveyor systems, and rotating equipment where reverse-thread fastening prevents loosening under counter-clockwise motion. The black-oxide steel construction provides essential corrosion protection while maintaining the structural integrity required for Grade 2 applications. The thin profile design offers significant space advantages in compact assemblies without compromising strength, while the UNC coarse thread configuration ensures rapid installation in high-volume production environments. Particularly valuable for maintenance applications requiring disassembly of left-hand threaded components, this nut's external hex drive delivers reliable torque application with standard industrial tools.
Specification Summary & Compliance
Manufactured to exact 1 1/2"-6 UNC specifications with Class 2B thread fit tolerance for consistent engagement. Complies with ASTM A108 material standards and meets Grade 2 mechanical properties. Fully compliant with RoHS 3 (2015/863/EU) under exemption 6(a) and REACH (EC 1907/2006) regulations (SVHC list as of 01/17/2023). Dimensions: 2 1/4" width, 27/32" height.
