S-90630A212 1 3/8"-8 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 through nylon insert locking technology that maintains secure fastening in high-motion environments
- Exceptional strength and durability with Grade 8 steel construction for heavy-duty industrial applications
- Reliable high-temperature performance with nylon insert rated up to 220°F for thermal stability
- Precise thread engagement with Class 2B thread fit ensuring consistent, reliable installation
- Industry-standard compatibility with 1 3/8"-8 UNC coarse threads for broad application use
- Easy installation and removal with standard external hex drive design for straightforward maintenance
- Environmental compliance assurance meeting both REACH and RoHS 3 standards for responsible manufacturing
Professional Applications & Engineering Value
This Grade 8 steel locknut with nylon insert delivers critical vibration resistance in demanding industrial environments where mechanical stability is paramount. The UNC coarse thread design provides rapid installation while maintaining secure fastening in heavy machinery, construction equipment, and transportation applications. Engineered to withstand temperatures up to 220°F, this external hex locknut offers reliable performance in thermal cycling conditions. The Class 2B thread fit ensures precise mating with corresponding fasteners, reducing the risk of cross-threading and installation errors. With its 2 3/16" width and standard hex profile, this heavy-duty component provides the torque capacity needed for critical connections subject to dynamic loads and vibration stress.
Specification Summary & Compliance
This locknut features 1 3/8"-8 UNC coarse threads with Class 2B thread fit tolerance and right-hand thread direction. Manufactured from high-strength Grade 8 steel with a standard hex profile measuring 2 3/16" across flats and 1 51/64" height. The product is fully compliant with REACH (EC 1907/2006) regulations and RoHS 3 (2015/863/EU) directives, ensuring environmental responsibility and regulatory adherence for industrial applications worldwide.
