S-94407A110 5-40 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 mechanism, preventing loosening in dynamic applications
- Enhanced corrosion protection with black-oxide coating on 18-8 stainless steel for extended service life
- Reliable high-temperature performance with nylon insert rated up to 220°F (104°C)
- Precise thread engagement with Class 2B fit and UNC coarse threads for easy assembly and secure fastening
- Standard external hex drive for compatibility with common wrenching tools and efficient installation
- Environmental compliance assurance meeting RoHS 3 and REACH standards for global industrial use
- Right-hand thread design for conventional installation in standard applications
Professional Applications & Engineering Value
This 5-40 UNC nylon insert locknut delivers critical vibration resistance in demanding industrial environments where mechanical shocks and constant motion threaten fastener integrity. The black-oxide 18-8 stainless steel construction provides excellent corrosion resistance while the nylon insert creates consistent locking force without damaging threads. Engineers specify these locknuts for machinery, automotive assemblies, and electrical enclosures where vibration-resistant fastening is essential. The coarse UNC threads with Class 2B fit ensure reliable engagement even in applications with minor misalignment, while the 220°F temperature rating maintains performance in elevated temperature conditions common in industrial settings.
Specification Summary & Compliance
This locknut features 5-40 UNC coarse threads with Class 2B thread fit for standard industrial applications. The external hex drive accommodates 1/4" wrenching tools with standard hex nut profile. Manufactured from 18-8 stainless steel with black-oxide surface treatment, the component is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and global market acceptance for industrial fastener applications.
