S-95198A370 3/8"-16 x 3/8" ASME B18.3, DIN 912, ISO 4762 Sealing Socket Head Screws

Key Features & Benefits at a Glance

• Superior Sealing Performance: Integrated Buna-N O-ring provides reliable leak-proof sealing up to 1500 psi, preventing fluid and gas ingress in demanding applications.
• Exceptional Corrosion Resistance: 18-8 stainless steel construction ensures long-lasting durability in harsh environments, reducing maintenance frequency and replacement costs.
• High-Strength Reliability: 100,000 psi tensile strength and Rockwell B85 hardness deliver robust fastening integrity under extreme mechanical stress.
• Precision Thread Engagement: Class 3A thread fit with UNC coarse threading enables quick assembly and secure, vibration-resistant connections.
• Wide Temperature Compatibility: Operational range from -40° to 225°F ensures consistent performance in both cryogenic and elevated temperature settings.
• Standardized Interchangeability: Compliance with ASME B18.3, DIN 912, and ISO 4762 guarantees dimensional accuracy and global component compatibility.
• Enhanced Drive Stability: Hex socket drive with 5/16" drive size allows for high-torque installation without cam-out, improving assembly efficiency.

Professional Applications & Engineering Value

This socket head cap screw with integrated Buna-N O-ring seal addresses critical sealing challenges in high-pressure industrial systems. The 18-8 stainless steel material provides excellent corrosion resistance, making it ideal for chemical processing, marine equipment, and food machinery where moisture and aggressive media are present. The fully threaded design with UNC coarse threads ensures maximum grip length and rapid installation, while the Class 3A thread fit maintains tight tolerances to prevent loosening under vibration. Engineered for hydraulic and pneumatic applications, it effectively seals fluids and gases up to 1500 psi, reducing downtime and leakage-related failures in pumps, valves, and compressor assemblies.

Specification Summary & Compliance

This fastener features precision 3/8"-16 UNC threads with Class 3A thread fit for superior engagement accuracy. Manufacturing adheres to ASME B18.3, DIN 912, and ISO 4762 standards, ensuring dimensional consistency. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and regulatory acceptance in global markets.