S-95198A335 1/4"-20 x 3/4" ASME B18.3, DIN 912, ISO 4762 Sealing Socket Head Screws

Key Features & Benefits at a Glance

• Superior Sealing Performance: Integrated Buna-N rubber O-ring provides reliable sealing up to 1500 psi, preventing leaks in high-pressure applications.
• Exceptional Corrosion Resistance: Made from 18-8 stainless steel, offering excellent durability and resistance to rust in harsh environments.
• High Tensile Strength: Withstands up to 100,000 psi tensile strength, ensuring secure fastening under heavy loads and vibrations.
• Precise Thread Fit: Class 3A UNC coarse threads deliver tight, accurate engagement for reduced risk of cross-threading and improved assembly efficiency.
• Wide Temperature Tolerance: O-ring functions effectively from -40° to 225°F, making it suitable for diverse industrial conditions.
• Easy Installation with Hex Drive: 3/16" hex socket drive allows for straightforward tightening in confined spaces with standard tools.
• Compliance with International Standards: Meets ASME B18.3, DIN 912, and ISO 4762, ensuring consistent quality and interchangeability.

Professional Applications & Engineering Value

This socket head cap screw with an integrated O-ring seal is engineered to address critical sealing challenges in industrial applications. Constructed from 18-8 stainless steel, it resists corrosion and maintains integrity in moist or chemical-exposed environments, such as in machinery, automotive assemblies, and fluid handling systems. The Class 3A UNC coarse threads provide a precise fit that minimizes loosening under vibration, while the Buna-N rubber O-ring ensures effective sealing against oils, water, and air up to 1500 psi. Ideal for use in hydraulic systems, pumps, and enclosures, this screw combines high tensile strength and temperature resilience to enhance reliability and reduce maintenance needs in demanding engineering projects.

Specification Summary & Compliance

This product features a 1/4"-20 UNC coarse thread with Class 3A fit for high precision and durability. It is fully threaded and complies with ASME B18.3, DIN 912, and ISO 4762 standards, ensuring consistent dimensional accuracy. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting environmental and safety regulations for industrial use.