S-90215A429 1/4"-28 UL 50 Sealing Nuts
Sealing Nuts
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Basic Information
Dimension Parameters
Thread Parameters
Head Parameters
Material & Strength Parameters
Temperature & Environment Parameters
Installation & Application Parameters
Finish & Compliance Parameters
Cap Parameters
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Key Features & Benefits at a Glance
- Exceptional sealing reliability with silicone rubber seal that prevents leaks in demanding environments
- Superior corrosion resistance through nickel-plated brass construction for extended service life
- High-pressure performance capable of withstanding up to 6000 psi in industrial applications
- Wide temperature tolerance from -100° to 400° F for use in extreme thermal conditions
- Precision Class 2B thread fit ensures smooth installation and secure fastening
- UL 50 certification guarantees compliance with rigorous safety and performance standards
- Environmental compliance with RoHS 3 and REACH regulations for responsible manufacturing
Professional Applications & Engineering Value
This nickel-plated brass sealing nut delivers critical performance where fluid containment and pressure integrity are paramount. The combination of silicone rubber sealing material and precision UNF fine threads creates a reliable barrier against leaks in hydraulic systems, pneumatic equipment, and industrial machinery. Engineered to maintain seal integrity across extreme temperature fluctuations from -100° to 400° F, this external hex drive nut solves common challenges in automotive, aerospace, and manufacturing applications where thermal cycling and high-pressure conditions would compromise standard fasteners. The Class 2B thread fit ensures consistent torque values and proper seating without galling, while the standard hex profile accommodates common wrenching tools for efficient installation in confined spaces.
Specification Summary & Compliance
This 1/4"-28 UNF sealing nut features Class 2B thread fit with right-hand thread direction and fine thread spacing, manufactured to inch system specifications. The component meets UL 50 certification requirements and demonstrates full compliance with RoHS 3 (2015/863/EU) under exemption 6(c) for lead in copper alloy, along with REACH (EC 1907/2006) standards current through June 2022. Physical dimensions include 5/8" width and 7/32" height, engineered for consistent performance across the specified pressure and temperature ranges.
