S-91853A030 5/16"-18 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 the cotter pin locking mechanism, preventing loosening in high-stress environments
- Excellent corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial and outdoor applications
- Reliable thread engagement with Class 2B thread fit ensuring consistent performance and easy assembly
- Quick installation and removal using standard wrench tools thanks to the external hex drive design
- Enhanced safety and security with precisely machined slot (0.09" depth/width) for secure cotter pin retention
- Environmental compliance assurance meeting both RoHS 3 and REACH regulations for global market acceptance
- Optimized for 5/64" cotter pins providing perfect compatibility with standard locking components
Professional Applications & Engineering Value
This 5/16"-18 UNC stainless steel locknut delivers critical vibration resistance in demanding mechanical systems where safety cannot be compromised. The cotter pin locking mechanism provides permanent security against rotational loosening, making it ideal for heavy machinery, automotive suspensions, agricultural equipment, and construction applications. Manufactured from 18-8 stainless steel, it maintains integrity in corrosive environments while the coarse UNC thread ensures rapid assembly and disassembly. The external hex drive accommodates standard tools for efficient maintenance operations, reducing downtime in industrial settings where reliability is paramount for operational continuity and worker safety.
Specification Summary & Compliance
This locknut features 5/16"-18 UNC coarse threads with Class 2B thread fit for consistent engagement and proper clearance. Dimensions include 1/2" width across flats and 21/64" height with precisely machined slots (0.09" minimum depth/width) for 5/64" cotter pins. The product fully complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and global market acceptance for industrial fastener applications.
