S-90630A150 5/16"-24 Locknuts
Locknuts
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Basic Information
Dimension Parameters
Thread Parameters
Head Parameters
Material & Strength Parameters
Temperature & Environment Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Superior vibration resistance thanks to the nylon insert that maintains locking force under dynamic loads
- High-temperature performance with nylon insert rated for continuous use up to 220°F (104°C)
- Exceptional strength and durability from Grade 8 steel construction for heavy-duty applications
- Precise thread engagement with Class 2B thread fit ensuring reliable fastening in fine-thread assemblies
- Easy installation and removal with standard 1/2" external hex drive for common tool compatibility
- Environmental compliance meeting both REACH and RoHS 3 standards for restricted substances
- Reliable reusability with nylon insert design that maintains locking performance through multiple applications
Professional Applications & Engineering Value
This Grade 8 steel nylon insert locknut delivers critical vibration resistance in demanding industrial environments where fastener loosening can compromise safety and performance. The 5/16"-24 UNF fine thread configuration provides superior load distribution and thread engagement compared to coarse threads, making it ideal for precision equipment, automotive assemblies, and machinery subjected to constant vibration. The nylon insert locking mechanism creates consistent friction against the mating bolt, eliminating the need for additional locking devices while maintaining sealing properties. With its 220°F temperature rating and external hex drive, this locknut offers reliable performance in engine compartments, industrial machinery, and outdoor equipment where thermal cycling and environmental factors challenge conventional fasteners.
Specification Summary & Compliance
This locknut features Class 2B thread fit per UNF standards with 5/16"-24 fine threads in right-hand direction. Manufactured from Grade 8 steel with standard hex profile and 1/2" width x 11/32" height dimensions in inch system. The product is fully compliant with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) environmental standards, ensuring safe use in regulated applications across various industries.
