S-90042A272 M5 x 40 mm 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 against fluids and contaminants, withstanding pressures up to 1500 psi for leak-proof assemblies.
• Exceptional Corrosion Resistance: Made from 18-8 stainless steel, offering excellent durability and resistance to rust in harsh industrial environments.
• High Tensile Strength & Hardness: With 100,000 psi tensile strength and Rockwell B85 hardness, ensuring reliable load-bearing capacity and reduced risk of stripping or failure.
• Wide Temperature Tolerance: O-ring functions effectively in temperatures from -40° to 225° F, suitable for varied operating conditions without degradation.
• Precise Thread Fit & Easy Installation: Class 6g thread fit and coarse M5 x 0.8 mm thread design enable quick, secure fastening with standard 4 mm hex tools, reducing assembly time.
• Partially Threaded Design: Allows for controlled clamping force and secure fastening in applications where full threading isn't required, improving joint stability.
• Global Compliance & Interchangeability: Meets ASME B18.3, DIN 912, and ISO 4762 standards, ensuring compatibility and reliability in international engineering projects.

Professional Applications & Engineering Value

This M5 metric socket head cap screw is engineered to address critical sealing and corrosion challenges in demanding industrial settings. The 18-8 stainless steel construction provides inherent resistance to oxidation and chemical exposure, making it ideal for machinery, automotive, and fluid handling systems where environmental factors threaten fastener integrity. The inclusion of a Buna-N rubber O-ring ensures effective sealing against high-pressure fluids (up to 1500 psi) and particulate ingress, preventing leaks in hydraulic, pneumatic, or enclosed assemblies. With a partially threaded rod and coarse metric thread (M5 x 0.8 mm), it offers optimized grip and ease of installation in tight spaces, reducing the risk of cross-threading. The hex drive design allows for high torque application with standard tools, enhancing efficiency in maintenance and production lines while maintaining consistent performance across temperature fluctuations from -40° to 225° F.

Specification Summary & Compliance

This screw features a metric thread size M5 x 0.8 mm with Class 6g thread fit for precise tolerance, ensuring secure fastening in accordance with international standards. It is manufactured to meet ASME B18.3, DIN 912, and ISO 4762 specifications, guaranteeing dimensional accuracy and interoperability. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations confirms the absence of hazardous substances, supporting safe and sustainable usage in global supply chains.