S-91831A002 2-56 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 with nylon insert locking mechanism for reliable performance in high-motion environments
- Excellent corrosion resistance from 18-8 stainless steel construction, ideal for harsh industrial conditions
- High-temperature durability with nylon insert rated to 220°F for thermal stability in demanding applications
- Secure coarse thread engagement with UNC threads and Class 2B fit ensuring consistent, reliable fastening
- Easy installation and removal with standard external hex drive design compatible with common tools
- Environmental compliance assurance meeting RoHS 3 and REACH standards for global industrial use
- Right-hand thread design providing standard directional fastening for straightforward assembly processes
Professional Applications & Engineering Value
This 2-56 nylon insert lock nut delivers critical vibration-resistant performance for industrial machinery, automotive assemblies, and electronic enclosures where loosening under dynamic loads poses significant reliability risks. The 18-8 stainless steel construction provides essential corrosion resistance in demanding environments, while the nylon insert locking mechanism maintains consistent clamping force without damaging mating threads. Engineered with UNC coarse threads and Class 2B fit, this external hex locknut ensures rapid assembly and disassembly while providing secure fastening in applications subject to constant vibration, thermal cycling, and mechanical stress. The 220°F temperature rating makes it suitable for engine compartments, motor mounts, and industrial equipment where thermal stability is paramount.
Specification Summary & Compliance
This locknut features precision UNC 2-56 coarse threads with Class 2B thread fit for consistent engagement and reliable performance. The standard external hex drive (1/4" width) ensures compatibility with common wrenching tools. Manufactured from 18-8 stainless steel with a nylon insert rated to 220°F maximum temperature. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards for industrial and commercial applications worldwide.
