S-90042A253 M4 x 8 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, preventing leaks in high-pressure applications up to 1500 psi
• Exceptional corrosion resistance from 18-8 Stainless Steel construction, ensuring long-term reliability in harsh environments
• High tensile strength of 100,000 psi provides secure fastening under extreme mechanical loads
• Precision Class 6g thread fit guarantees consistent engagement and vibration resistance in assembly operations
• Wide temperature tolerance from -40° to 225° F maintains sealing integrity across diverse operating conditions
• Standard hex drive compatibility with 3mm tools enables quick installation and removal in confined spaces
• Full threading design offers maximum grip length and adjustment flexibility in various material thicknesses

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these M4 socket head cap screws combine 18-8 Stainless Steel durability with Buna-N rubber O-ring technology to solve critical sealing challenges. The coarse thread pitch (0.7mm) ensures rapid installation while maintaining Class 6g thread fit precision for vibration-resistant connections in machinery, fluid systems, and precision equipment. The fully threaded design provides consistent clamping force across the entire 8mm length, making these metric fasteners ideal for hydraulic components, pneumatic systems, and industrial automation where pressure integrity and corrosion resistance are paramount. The socket head profile with 3mm hex drive facilitates access in space-constrained assemblies while meeting international engineering standards.

Specification Summary & Compliance

These metric socket head cap screws feature M4 x 0.7mm coarse threads with Class 6g tolerance for precise fitment. Manufacturing complies with ASME B18.3, DIN 912, and ISO 4762 specifications, ensuring dimensional accuracy and interchangeability. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) requirements. The combination of Rockwell B85 hardness and 100,000 psi tensile strength guarantees mechanical performance while the O-ring provides reliable sealing up to 1500 psi maximum pressure.