S-90042A274 M5 x 50 mm ASME B18.3, DIN 912, ISO 4762 Sealing Socket Head Screws

Key Features & Benefits at a Glance

• Superior sealing performance with integrated Buna-N rubber O-ring that withstands pressures up to 1500 psi, preventing leaks in critical applications
• Exceptional corrosion resistance thanks to 18-8 stainless steel construction, ensuring long-term reliability in harsh environments
• High mechanical strength with 100,000 psi tensile strength and Rockwell B85 hardness for demanding industrial applications
• Wide temperature compatibility from -40° to 225° F, maintaining sealing integrity across extreme operating conditions
• Precise thread engagement with Class 6g thread fit and M5 x 0.8mm coarse thread profile for secure fastening and easy installation
• Optimized drive efficiency through 4mm hex socket design providing maximum torque transmission and reduced cam-out risk
• Versatile partial threading with 24mm minimum thread length allowing for both secure clamping and smooth adjustment capabilities

Professional Applications & Engineering Value

These M5 metric socket head cap screws with integrated Buna-N rubber O-rings solve critical sealing challenges in industrial equipment, hydraulic systems, and precision machinery. The 18-8 stainless steel construction provides excellent corrosion resistance while maintaining high tensile strength, making these fasteners ideal for applications exposed to moisture, chemicals, or outdoor elements. The partially threaded design ensures optimal load distribution while the hex socket drive allows for high-torque installation in confined spaces. Engineered to withstand pressures up to 1500 psi, these sealing screws prevent fluid and gas leakage in pneumatic systems, pump assemblies, and fluid handling equipment where reliability is paramount. The combination of metric coarse threading and precise Class 6g thread fit guarantees consistent performance across manufacturing, automotive, and industrial maintenance applications.

Specification Summary & Compliance

These socket head cap screws feature M5 x 0.8mm coarse metric thread with Class 6g thread fit tolerance and 24mm minimum thread length. Manufactured to ASME B18.3, DIN 912, and ISO 4762 standards ensuring dimensional accuracy and interchangeability. The fasteners are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, containing no restricted substances. The 18-8 stainless steel material provides consistent mechanical properties while the Buna-N O-ring meets industry standards for sealing applications across the specified temperature range of -40° to 225° F.