S-95198A322 10-32 x 5/16" 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 fluid and gas sealing up to 1500 psi, preventing leaks in pressurized systems.
• Exceptional Corrosion Resistance: 18-8 stainless steel construction ensures long-term durability and performance in harsh or corrosive industrial environments.
• Precision Thread Fit: Class 3A UNF fine threads offer superior vibration resistance and a secure, tight fit for critical assembly applications.
• High Strength & Durability: With a tensile strength of 100,000 psi and Rockwell B85 hardness, this screw withstands heavy mechanical loads and stress.
• Wide Temperature Tolerance: O-ring maintains sealing integrity across a broad temperature range from -40°F to 225°F, suitable for diverse operating conditions.
• Standard Socket Drive: Hex drive (5/32") and standard socket head profile allow for easy installation and high torque application with common tools.
• Global Compliance & Reliability: Meets ASME B18.3, DIN 912, and ISO 4762 standards, ensuring interchangeability and quality for international engineering projects.

Professional Applications & Engineering Value

This 10-32 UNF socket head cap screw is engineered to solve critical sealing and fastening challenges in high-pressure industrial systems. The 18-8 stainless steel body provides excellent corrosion resistance, while the Class 3A thread fit ensures precise, vibration-resistant engagement in machinery, fluid power systems, and precision equipment. The inclusion of a Buna-N rubber O-ring directly addresses leakage issues in hydraulic, pneumatic, and coolant applications, maintaining a reliable seal under pressures up to 1500 psi. Its fully threaded design and fine UNF thread offer superior clamping force and are ideal for applications requiring consistent pressure distribution and tamper resistance, such as in valve assemblies, pump housings, and automated machinery where reliability is non-negotiable.

Specification Summary & Compliance

This screw features a 10-32 UNF fine thread with a Class 3A thread fit for high precision and strength. It complies with ASME B18.3, DIN 912, and ISO 4762 standards, ensuring dimensional accuracy and global interoperability. The product is also RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting stringent environmental and safety regulations for industrial use.