S-91853A520 5/16"-24 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 cotter pin locking mechanism that prevents loosening in high-stress applications
- Excellent corrosion protection with 18-8 stainless steel construction for demanding industrial environments
- Precise thread engagement with Class 2B fit ensuring reliable performance in critical assemblies
- Easy installation and removal using standard tools with external hex drive design
- Secure pin retention with optimized 5/64" cotter pin accommodation and 0.09" slot dimensions
- Environmental compliance meeting both REACH and RoHS 3 standards for global manufacturing requirements
- Fine thread advantage with 5/16"-24 UNF providing better tension control in precision applications
Professional Applications & Engineering Value
This stainless steel cotter pin locknut delivers exceptional engineering value in applications where vibration resistance and permanent locking security are paramount. The 18-8 stainless steel material provides outstanding corrosion resistance for harsh environments, while the UNF fine threading with Class 2B thread fit ensures precise engagement and reliable performance. The external hex drive allows for straightforward installation using standard tools, and the cotter pin locking mechanism offers a fail-safe solution for critical assemblies in automotive, aerospace, and heavy machinery. The optimized slot dimensions accommodate standard 5/64" cotter pins, creating a robust locking system that withstands extreme vibration and dynamic loads where conventional nuts would fail.
Specification Summary & Compliance
This locknut features 5/16"-24 UNF fine threading with Class 2B thread fit for precise tolerance control, manufactured to standard inch system specifications. The external hex drive measures 1/2" across flats with a height of 21/64", designed to accommodate standard 5/64" cotter pins through 0.09" slot dimensions. The product is fully compliant with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) environmental regulations, ensuring suitability for global industrial applications requiring certified components.
