S-95198A172 1/4"-20 x 1 1/8" 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 corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
- Exceptional sealing performance with integrated silicone rubber O-ring, preventing leaks under pressures up to 1500 psi
- High tensile strength of 100,000 psi ensures reliable performance in demanding mechanical applications
- Precise Class 3A thread fit provides superior engagement and vibration resistance in critical assemblies
- Wide temperature tolerance from -80° to 400°F maintains sealing integrity across extreme operating conditions
- Standard hex drive compatibility with 3/16" drive size enables quick installation and removal with common tools
- Full thread engagement along the entire 1-1/8" length for maximum holding power and distribution
Professional Applications & Engineering Value
This socket head cap screw delivers critical engineering solutions where pressure sealing and corrosion resistance are paramount. The 18-8 stainless steel construction combined with Class 3A UNC coarse threads ensures reliable performance in high-vibration industrial equipment, hydraulic systems, and pneumatic applications. The integrated silicone rubber O-ring provides a dependable seal against fluid and gas penetration, while the standard socket head profile with 3/16" hex drive facilitates installation in confined spaces. These fully threaded fasteners are engineered to maintain integrity across extreme temperature fluctuations from -80° to 400°F, making them ideal for OEM manufacturing, heavy machinery, and processing equipment where failure is not an option.
Specification Summary & Compliance
Manufactured to Class 3A thread fit precision with UNC coarse thread spacing and right-hand thread direction. Complies with ASME B18.3, DIN 912, and ISO 4762 standards for dimensional accuracy and performance. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance requirements. Features Rockwell B85 hardness and is designed for maximum hole diameter of 0.265".
