S-95198A443 4-40 x 3/16" ASME B18.3, DIN 912, ISO 4762 Sealing Socket Head Screws
Sealing Socket Head 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 Viton® fluoroelastomer O-rings that withstand temperatures from -20° to 400°F, ideal for demanding industrial environments
- Exceptional corrosion resistance provided by 18-8 stainless steel construction, ensuring long-term reliability in harsh conditions
- High tensile strength of 100,000 psi delivers reliable fastening under extreme mechanical stress and vibration
- Precision Class 3A thread fit ensures consistent engagement and superior holding power in critical applications
- Pressure-rated to 1500 psi for secure sealing in high-pressure fluid and gas systems
- Standard hex drive compatibility with 3/32" drive size allows for easy installation with common tools
- Full threading provides maximum grip length and uniform load distribution
Professional Applications & Engineering Value
These socket head cap screws with integrated Viton® O-rings solve critical sealing challenges in industrial applications where fluid containment and pressure integrity are paramount. The 18-8 stainless steel construction combined with UNC coarse threading provides excellent corrosion resistance and rapid installation in automated assembly processes. Engineered to maintain seal integrity under 1500 psi maximum pressure and extreme temperature fluctuations, these fasteners are ideal for hydraulic systems, pneumatic equipment, and processing machinery where leak prevention is essential. The Class 3A thread fit ensures precise engagement in tapped holes, reducing the risk of cross-threading while the fully threaded design maximizes contact surface for superior vibration resistance.
Specification Summary & Compliance
This 4-40 UNC thread socket head cap screw features Class 3A thread fit precision and complies with ASME B18.3, DIN 912, and ISO 4762 manufacturing standards. The product meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance requirements, ensuring environmental responsibility and regulatory adherence for global industrial applications.
