S-95198A257 2-56 x 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 Sealing Performance: Integrated Buna-N O-ring provides reliable leak-proof sealing in high-pressure applications up to 1500 psi.
- Exceptional Corrosion Resistance: 18-8 stainless steel construction ensures long-lasting durability in harsh industrial environments.
- Precision Thread Fit: Class 3A UNC coarse threads deliver secure, vibration-resistant fastening with minimal risk of loosening.
- High Strength Under Pressure: 100,000 psi tensile strength and Rockwell B85 hardness maintain integrity in demanding mechanical assemblies.
- Wide Temperature Compatibility: O-ring functions reliably across -40° to 225°F range for versatile application use.
- Standardized Socket Design: Hex drive (5/64") and standard socket head profile enable easy installation with common tools.
- Global Compliance Assurance: Meets ASME B18.3, DIN 912, and ISO 4762 standards for international project compatibility.
Professional Applications & Engineering Value
This socket head cap screw with integrated Buna-N O-ring seal solves critical leakage challenges in high-pressure industrial systems. The 18-8 stainless steel material provides excellent corrosion resistance for harsh environments, while the Class 3A UNC thread fit ensures precise engagement that resists vibration-induced loosening. Engineers specify this fastener for hydraulic components, pneumatic equipment, and precision machinery where 1500 psi pressure sealing is required. The combination of 100,000 psi tensile strength and standardized socket head design makes it ideal for space-constrained assemblies requiring both structural integrity and easy maintenance access.
Specification Summary & Compliance
Features Class 3A thread fit with 2-56 UNC coarse threads and standard socket head profile per ASME B18.3, DIN 912, and ISO 4762 specifications. Manufactured from 18-8 stainless steel with Buna-N rubber O-ring sealing element. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations.
