S-90825A142 4-40 x 5/16" Sealing Stainless Steel Pan Head Phillips Screws
Sealing Stainless Steel Pan Head Phillips Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
Installation & Application
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Key Features & Benefits at a Glance
- Superior sealing performance with Buna-N rubber O-rings that withstand pressures up to 6000 psi, preventing leaks in demanding applications
- Excellent corrosion resistance thanks to 18-8 stainless steel construction and passivated finish, ensuring long-term reliability in harsh environments
- Wide temperature compatibility from -40° to 225°F, maintaining seal integrity across diverse operating conditions
- Precise thread engagement with Class 2A UNC coarse threads providing secure fastening and easy installation
- Enhanced drive stability with Phillips No. 1 drive and rounded pan head design for consistent torque application
- Full regulatory compliance with RoHS 3 and REACH standards, meeting strict industrial environmental requirements
- Complete thread coverage along the 5/16" length ensures maximum holding power and sealing surface contact
Professional Applications & Engineering Value
These 4-40 UNC rounded head Phillips screws deliver critical sealing solutions for industrial equipment exposed to high-pressure fluids and gases. The combination of 18-8 stainless steel with passivated finish provides exceptional corrosion resistance in chemical processing, marine, and outdoor applications. The integrated Buna-N rubber O-ring creates a reliable seal that maintains integrity under 6000 psi maximum pressure, making these screws ideal for hydraulic systems, pneumatic controls, and fluid handling equipment. The coarse UNC threads with Class 2A fit ensure quick installation and vibration resistance, while the Phillips drive and rounded pan head design facilitate efficient assembly in confined spaces.
Specification Summary & Compliance
This sealing screw features precision 4-40 UNC coarse threads with Class 2A fit for consistent fastening performance. The 18-8 stainless steel construction with passivated finish provides enhanced corrosion protection. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across industrial sectors. The Buna-N rubber O-ring maintains sealing capability across the specified temperature range of -40° to 225°F.
