S-90505A375 M2.5 x 5 mm DIN 965 Sealing Stainless Steel Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Superior Corrosion Resistance: Crafted from 316 stainless steel, this screw offers excellent protection against harsh environments, ensuring long-term reliability and reduced maintenance.
• Reliable High-Pressure Sealing: The integrated silicone rubber O-ring creates a robust seal capable of withstanding pressures up to 6000 psi, preventing leaks in critical assemblies.
• Exceptional Temperature Tolerance: With an O-ring temperature range from -80° to 400° F, this fastener performs reliably in both extreme cold and high-heat applications.
• Optimized for Sealing & Flush Fit: The undercut flat head profile and 90° countersink angle ensure a clean, flush installation while maximizing the sealing effectiveness of the O-ring.
• High Tensile Strength for Demanding Applications: A tensile strength of 70,000 psi provides dependable clamping force and structural integrity under load.
• Precision Thread Engagement: Features a Class 6g thread fit and coarse M2.5 x 0.45mm thread for easy starting, secure fastening, and vibration resistance.
• Streamlined Assembly with Phillips Drive: The Phillips No. 1 drive allows for efficient installation with common tools, speeding up the assembly process.

Professional Applications & Engineering Value

This M2.5 flat head sealing screw is engineered to solve critical challenges in precision applications where fluid or gas integrity is paramount. The core 316 stainless steel construction provides exceptional resistance to corrosion from chemicals, saltwater, and other aggressive media, making it ideal for marine, chemical processing, and food-grade equipment. The fully threaded design and coarse metric thread ensure maximum thread engagement and holding power in a compact 5mm length. The integrated silicone rubber O-ring is the key to its sealing capability, reliably preventing leaks in high-pressure systems up to 6000 psi and across a wide temperature spectrum. This combination of material and design delivers a DIN 965 compliant fastener that offers long-term durability and performance, reducing the risk of assembly failure and maintenance downtime.

Specification Summary & Compliance

This screw adheres to precise dimensional standards, including a Class 6g thread fit for consistent engagement and the DIN 965 specification for undercut flat head screws. It is manufactured to meet a maximum hole diameter of 2.946 mm. The product is fully compliant with major environmental and safety regulations, including RoHS 3 (2015/863/EU) and REACH (EC 1907/2006).