S-90505A448 M3 x 16 mm DIN 965 Sealing Stainless Steel Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Reliable Sealing Performance: Integrated Buna-N rubber O-ring creates a robust seal, preventing leaks in pressurized systems up to 6000 psi.
• Superior Corrosion Resistance: Manufactured from 316 Stainless Steel, offering excellent durability in harsh, corrosive environments.
• Wide Temperature Tolerance: The O-ring maintains sealing integrity across a broad temperature range from -40° to 225° F.
• Optimized for Flush Installation: The undercut flat head profile allows the screw to sit flush with the surface, ideal for applications where a smooth finish is required.
• Precise and Secure Fastening: Class 6g thread fit ensures consistent, high-quality engagement for reliable assembly and vibration resistance.
• Efficient Installation: The Phillips No. 1 drive provides a common and efficient installation interface, reducing assembly time.
• Full Thread Engagement: Fully threaded design maximizes grip strength and load distribution along the entire fastener length.

Professional Applications & Engineering Value

This M3 flat head screw is engineered to solve critical sealing challenges in demanding industrial applications. Its core value lies in the combination of a 316 stainless steel body for corrosion resistance and a Buna-N rubber O-ring for pressure sealing. This design directly addresses the engineering pain points of fluid and gas leakage in equipment such as hydraulic manifolds, pneumatic systems, pump housings, and marine hardware. The undercut flat head ensures a clean, flush finish, preventing snagging and maintaining aerodynamic or hydrodynamic surfaces. The fully threaded metric screw with a 0.5 mm coarse pitch provides rapid installation and high clamp load, making it an efficient and reliable sealing solution for OEMs and maintenance professionals.

Specification Summary & Compliance

This fastener features a M3 x 0.5 mm thread with a Class 6g tolerance for precision fit. It is manufactured to conform to the DIN 965 standard, ensuring dimensional accuracy and interchangeability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making it suitable for use in global markets with strict substance control requirements.