S-95198A547 3/8"-16 x 5/8" ASME B18.3, DIN 912, ISO 4762 Sealing Socket Head Screws

Key Features & Benefits at a Glance

• Superior Sealing Performance: Integrated Viton® fluoroelastomer O-ring provides a reliable seal in high-pressure environments up to 1500 psi, preventing leaks and contamination.
• Exceptional Corrosion & Temperature Resistance: 18-8 Stainless Steel construction ensures excellent durability and performance in temperatures from -20° to 400° F, ideal for harsh industrial settings.
• High Tensile Strength for Demanding Loads: With a 100,000 psi tensile strength, this screw offers robust mechanical integrity for critical, high-stress applications.
• Precision Thread Fit for Secure Fastening: Class 3A UNC coarse thread ensures tight, accurate engagement and reduces the risk of cross-threading, enhancing assembly reliability.
• Optimized for High-Pressure Sealing Applications: Designed with a fully threaded body and standard socket head for consistent sealing force and easy installation in confined spaces.
• Broad Regulatory Compliance: Meets ASME B18.3, DIN 912, and ISO 4762 standards, and is RoHS 3 and REACH compliant, ensuring global acceptability and safety.
• Versatile Industrial Use: The combination of high hardness (Rockwell B85) and chemical-resistant O-ring makes it suitable for fluid systems, machinery, and automotive assemblies.

Professional Applications & Engineering Value

This Socket Head Cap Screw with Viton® O-ring is engineered to address critical sealing challenges in high-pressure and high-temperature environments. The 18-8 Stainless Steel material provides superior corrosion resistance, while the Class 3A UNC coarse thread ensures precise, secure fastening that minimizes vibration loosening. The integrated Viton fluoroelastomer rubber O-ring maintains its elasticity across a wide temperature range (-20° to 400° F), offering a durable seal against fluids and gases up to 1500 psi. Ideal for applications in hydraulic systems, pumps, and industrial machinery, this screw enhances assembly integrity, reduces maintenance needs, and supports efficient operations in demanding sectors like automotive, aerospace, and chemical processing.

Specification Summary & Compliance

This screw features a 3/8"-16 UNC thread with Class 3A fit, ensuring high dimensional accuracy and reliable performance. It is manufactured in compliance with ASME B18.3, DIN 912, and ISO 4762 standards, guaranteeing consistency and interchangeability. The product is fully RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, meeting stringent environmental and safety regulations. With a fully threaded design and specifications for maximum hole diameter (0.397"), it supports precise engineering requirements in industrial fastening applications.