S-90045A471 1/2"-20 Locknuts
Locknuts
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Basic Information
Dimension Parameters
Thread Parameters
Head Parameters
Material & Strength Parameters
Installation & Application Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Superior vibration resistance through top lock distorted thread design that maintains secure fastening under extreme conditions
- Excellent corrosion protection with 18-8 stainless steel construction for long-lasting performance in harsh environments
- Precise thread engagement with Class 2B thread fit ensuring reliable, consistent locking performance
- Easy installation and removal using standard 3/4" external hex drive for efficient maintenance operations
- Fine thread configuration (UNF 1/2"-20) providing enhanced clamping force and better vibration resistance
- Compliance assurance meeting RoHS 3 and REACH environmental standards for global industrial applications
- Compact design with 7/16" height profile offering space-saving solutions without compromising strength
Professional Applications & Engineering Value
This 18-8 stainless steel locknut with distorted thread technology addresses critical vibration-induced loosening challenges in demanding industrial environments. The top lock design creates controlled interference during final turns, generating permanent locking action that withstands continuous mechanical stress. Engineered with UNF fine threads and Class 2B thread fit, it delivers superior clamping force distribution while maintaining precise alignment in assembly operations. The corrosion-resistant properties of stainless steel make it ideal for applications exposed to moisture, chemicals, or outdoor conditions, including heavy machinery, transportation equipment, and industrial processing systems where reliable, long-term fastening security is paramount.
Specification Summary & Compliance
This heavy-duty locknut features 1/2"-20 UNF fine threads with Class 2B thread fit tolerance, ensuring precise engagement and consistent performance. The external hex drive measures 3/4" across flats with a total height of 7/16". Manufactured to industry standards for distorted thread locknuts, this component is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting the latest environmental and safety requirements for industrial fasteners.
