S-91991A104 1/2"-13 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
- Enhanced durability and corrosion resistance with black-oxide steel coating, ideal for harsh industrial environments.
- Superior torque application and reduced slipping due to the extra wide hex profile, ensuring secure fastening.
- Reliable performance in high-vibration settings with coarse UNC threads and Class 2B fit for easy assembly and strong hold.
- Broad compatibility with standard components using 1/2"-13 right-hand threads, simplifying sourcing and replacement.
- Easy installation and removal with external hex drive design, reducing labor time and tool requirements.
- Compliance with global safety standards including RoHS 3 and REACH, ensuring environmental and workplace safety.
- Robust construction for heavy-duty applications in construction, machinery, and automotive sectors, minimizing failure risks.
Professional Applications & Engineering Value
This 1/2"-13 UNC hex nut is engineered to address common industrial challenges such as corrosion, vibration loosening, and assembly inefficiencies. Made from black-oxide steel, it provides excellent protection against rust and wear, extending service life in demanding conditions like outdoor equipment or manufacturing setups. The extra wide profile and external hex drive allow for higher torque application without rounding, reducing the need for frequent maintenance. With coarse threads and Class 2B thread fit, it ensures quick, secure fastening in applications involving heavy machinery, structural frameworks, and automotive assemblies, where reliability and compliance with standards like RoHS and REACH are critical for operational safety and longevity.
Specification Summary & Compliance
This hex nut adheres to precise specifications, including a 1/2"-13 UNC coarse thread with Class 2B thread fit for consistent dimensional accuracy and ease of use. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances and suitable for industrial safety standards. The manufacturing follows inch system measurements, with a width of 7/8" and height of 31/64", supporting reliable performance in various engineering applications.
