S-95198A587 1/2"-20 x 1 1/2" 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 ensures reliable, leak-proof seals in demanding applications, resisting temperatures from -20° to 400° F.
• Exceptional Corrosion Resistance: Crafted from 18-8 Stainless Steel, offering excellent durability and resistance to rust in harsh industrial environments.
• High Tensile Strength for Demanding Loads: With a 100,000 psi tensile strength, this screw provides robust fastening integrity under high-stress conditions.
• Precision Thread Fit for Secure Assembly: Class 3A thread fit and UNF fine threads deliver superior engagement and vibration resistance, minimizing loosening.
• Wide Pressure and Temperature Tolerance: Capable of withstanding pressures up to 1500 psi, making it ideal for high-pressure fluid and gas systems.
• Consistent Drive Engagement: Standard 3/8" hex drive socket head allows for easy installation and high torque application without stripping.
• Broad Regulatory Compliance: Meets ASME B18.3, DIN 912, and ISO 4762 standards, ensuring interchangeability and reliability in global engineering projects.

Professional Applications & Engineering Value

This 1/2"-20 UNF socket head cap screw is engineered to address critical sealing and fastening challenges in industrial settings. The combination of 18-8 Stainless Steel and a Viton® fluoroelastomer O-ring provides a durable, corrosion-resistant solution that maintains integrity in fluctuating temperatures and high-pressure environments, such as hydraulic systems, pneumatic equipment, and chemical processing machinery. Its fine thread design and Class 3A thread fit ensure tight, secure connections that resist vibration and leakage, reducing maintenance needs and enhancing operational safety. Ideal for applications requiring reliable sealing under extreme conditions, this fastener supports efficient assembly and long-term performance in high-pressure sealing tasks.

Specification Summary & Compliance

This screw features precise Class 3A thread fit per UNF standards, with a thread size of 1/2"-20 and fully threaded design for consistent engagement. Manufactured in compliance with ASME B18.3, DIN 912, and ISO 4762 specifications, it ensures dimensional accuracy and reliability. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting environmental and safety regulations for industrial use.