S-99291A460 3/8"-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 top lock distorted thread technology that maintains secure fastening under extreme conditions
- Enhanced corrosion protection with black-oxide steel finish that withstands harsh industrial environments
- Reliable strength performance meeting ASTM Grade C specifications for demanding applications
- Precise thread engagement with Class 2B thread fit ensuring consistent, secure connections
- Easy installation and removal using standard wrench tools with the external hex drive design
- Fine thread advantage with 3/8"-24 UNF configuration providing better tension control and vibration resistance
- Environmental compliance meeting both REACH and RoHS 3 standards for safe industrial use
Professional Applications & Engineering Value
This heavy-duty locknut with distorted thread technology addresses critical vibration-induced loosening challenges in industrial machinery, automotive assemblies, and heavy equipment. The black-oxide steel construction provides essential corrosion resistance while maintaining ASTM Grade C strength requirements. The 3/8"-24 UNF fine thread configuration offers superior clamping force distribution, making it ideal for applications where vibration resistance is paramount. The external hex drive allows for efficient installation in confined spaces, while the top lock distorted thread design ensures maintained tension without compromising the mating component's threads. This combination of features delivers reliable performance in industrial applications where safety and durability cannot be compromised.
Specification Summary & Compliance
This locknut features Class 2B thread fit tolerance for precise engagement with 3/8"-24 UNF fine threads in right-hand direction. The external hex measures 9/16" across flats with a 21/64" height profile. Manufactured to ASTM Grade C strength specifications and compliant with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) environmental standards, ensuring both mechanical reliability and regulatory compliance for industrial applications.
