S-90675A215 1/4"-28 Locknuts
Locknuts
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Basic Information
Dimension Parameters
Thread Parameters
Head Parameters
Material & Strength Parameters
Finish & Compliance Parameters
Washer Parameters
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Key Features & Benefits at a Glance
- Superior vibration resistance with an integrated external-tooth lock washer that bites into surfaces to prevent loosening under dynamic loads.
- Enhanced corrosion protection through zinc-plated steel construction, extending service life in harsh industrial environments.
- Precise thread engagement with Class 2B fit and UNF fine threads (1/4"-28) for reliable, secure fastening without cross-threading.
- Easy installation and removal using standard 7/16" hex wrenching, compatible with common tools for efficient maintenance.
- Durable steel composition ensures high tensile strength and reusability in demanding automotive and machinery applications.
- Optimized locking performance from the 0.5" OD external-tooth washer that distributes clamping force evenly for joint integrity.
- Right-hand threading compatibility for straightforward assembly in standard systems, reducing installation errors.
Professional Applications & Engineering Value
This 1/4"-28 UNF locknut with integrated external-tooth lock washer addresses critical vibration-induced loosening in high-stress environments. The zinc-plated steel material resists corrosion while the fine UNF threads and Class 2B fit ensure precise alignment and consistent clamping force. Ideal for automotive assemblies, industrial machinery, and heavy equipment, it eliminates the need for separate washers, reducing part count and assembly time. The external teeth dig into mating surfaces, maintaining tension under cyclic loads, making it a reliable secure fastening solution for mission-critical applications where safety and durability are paramount.
Specification Summary & Compliance
This locknut features a 1/4"-28 UNF fine thread with Class 2B thread fit for standard tolerance, a 7/16" width and 15/64" height for compact design, and a 0.5" OD external-tooth lock washer manufactured from steel. It complies with common UNF thread standards and is suitable for use in systems requiring RoHS and REACH material compliance, ensuring environmental and safety adherence in industrial settings.
