S-91078A225 1/2"-20 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 corrosion resistance with zinc-plated steel construction, ideal for humid or outdoor industrial environments.
- Space-saving thin profile (5/16" height) allows use in tight assemblies without compromising strength.
- Reliable fine thread engagement with 1/2"-20 UNF threads and Class 2B fit, ensuring vibration resistance and secure fastening.
- Easy installation and removal thanks to the standard 3/4" external hex drive, compatible with common wrenches.
- Durable performance under load with Grade 2 strength rating, suitable for general-purpose and heavy-duty applications.
- Compliance with environmental standards including RoHS 3 and REACH, meeting global regulatory requirements.
- Right-hand threading design provides intuitive assembly for standard rotational fastening operations.
Professional Applications & Engineering Value
This 1/2"-20 UNF thin hex nut delivers critical advantages in assemblies where space constraints and corrosion are concerns. The zinc-plated steel material combats rust in machinery, automotive, and construction equipment exposed to moisture. Its fine thread spacing and Class 2B thread fit offer superior clamp load distribution and resistance to loosening under dynamic stresses. The thin hex nut profile is engineered for compact designs, such as in enclosures or stacked components, without sacrificing the reliability of a Grade 2 strength fastener. With an external hex drive, it ensures quick serviceability, making it a go-to choice for maintenance-heavy industrial applications requiring consistent, repeatable performance.
Specification Summary & Compliance
This hex nut features a 1/2"-20 UNF fine thread with Class 2B thread fit per unified inch standards, ensuring precise dimensional accuracy. It meets Grade 2 mechanical properties for dependable strength. The product is manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious procurement and use in regulated industries.
