S-90640A170 5/8"-18 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 the nylon insert locking mechanism that maintains secure fastening under dynamic loads
- Enhanced durability in industrial environments with zinc-plated steel construction providing corrosion protection
- Reliable high-temperature performance with nylon insert rated for continuous service up to 220°F (104°C)
- Precision thread engagement with Class 2B thread fit ensuring consistent torque values and installation reliability
- Industry-standard compatibility through UNF fine thread specification matching common industrial equipment requirements
- Easy installation and removal with standard external hex drive design compatible with common wrench tools
- Compliance with environmental regulations meeting RoHS 3 and REACH standards for global industrial applications
Professional Applications & Engineering Value
This 5/8"-18 UNF nylon insert lock nut delivers critical vibration resistance for industrial machinery, automotive assemblies, and heavy equipment where secure fastening is paramount. The zinc-plated steel construction provides essential corrosion protection in demanding environments, while the nylon insert locking mechanism maintains clamp force without damaging mating threads. Engineered with Class 2B precision threads, this locknut ensures consistent torque-tension relationships and reliable performance in high-vibration applications. The fine thread UNF specification offers superior resistance to loosening compared to coarse threads, making it ideal for precision equipment requiring vibration-resistant fastening solutions that withstand operational temperatures up to 220°F.
Specification Summary & Compliance
This locknut features 5/8"-18 UNF fine threads with Class 2B thread fit for precision engagement, manufactured to standard hex nut profile dimensions (15/16" width × 3/4" height). The external hex drive design accommodates standard wrench tools for straightforward installation. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility while meeting industrial fastener standards for reliable performance in demanding applications.
