S-90550A124 M4 x 16 mm Venting Stainless Steel Hex-Drive Flat Head Screws

Key Features & Benefits at a Glance

• Corrosion-resistant 18-8 stainless steel construction ensures long-term reliability in harsh or humid environments, reducing maintenance costs.
• Hex drive design with 2.5 mm drive size provides secure, slip-resistant torque application for efficient assembly and disassembly.
• Fully threaded M4 x 0.7 mm coarse pitch enables faster installation and strong holding power in various materials.
• Class 6g thread fit guarantees precise, consistent engagement with standard metric nuts and tapped holes, minimizing cross-threading risks.
• Vented feature with 1.17 mm diameter allows pressure or moisture escape, preventing seal failure in enclosed assemblies.
• Standard 90° countersink angle and flat head profile ensures a flush, professional finish that eliminates protrusions in precision applications.
• RoHS 3 and REACH compliance meets stringent environmental regulations, making it suitable for global supply chains and sensitive industries.

Professional Applications & Engineering Value

This M4 flat head screw is engineered to address common industrial challenges, such as vibration loosening and environmental degradation. The 18-8 stainless steel material offers excellent resistance to oxidation and chemical exposure, ideal for electronics enclosures, automotive components, and machinery panels. Its fully threaded coarse pitch metric design ensures rapid installation with high pull-out strength, while the hex drive allows for high-torque applications without stripping. The vented screw feature is critical in pressurized or sealed systems, preventing air or fluid buildup that could compromise integrity. By combining Class 6g thread fit with a standard flat head profile, this fastener delivers consistent performance in automated assembly lines and precision engineering projects.

Specification Summary & Compliance

This screw adheres to metric system standards with an M4 thread size, 0.7 mm coarse pitch, and 16 mm length. Threading is specified to Class 6g tolerance for reliable fit. It is manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free of restricted hazardous substances. The product features a standard 90° countersink angle and is fully threaded for uniform load distribution.