S-90557A140 M2.5 x 4 mm DIN 925 Steel Slotted Flat Head Screws

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with black-oxide steel coating for reliable performance in industrial environments
• Superior holding power from 60,000 psi tensile strength and Rockwell B71 hardness for demanding applications
• Quick installation and removal with standard slotted drive design compatible with common tools
• Secure fastening engagement through fully threaded design with extended tip for maximum thread contact
• Precise metric threading with Class 6g tolerance ensuring consistent fit and reliable assembly
• Optimized countersinking with 90° flat head profile for flush mounting in various materials
• Regulatory compliance assurance meeting DIN 925 standards and environmental regulations for global supply chain compatibility

Professional Applications & Engineering Value

These M2.5 metric flat head screws deliver exceptional engineering value in precision assembly applications where space constraints and material compatibility are critical. The black-oxide steel construction provides superior corrosion protection without compromising the 60,000 psi tensile strength, making them ideal for electronics enclosures, machinery components, and automotive assemblies. The fully threaded design with extended tip ensures maximum thread engagement in thin materials and blind holes, while the coarse 0.45mm pitch facilitates rapid installation and reduces cross-threading risks. The standard slotted drive offers broad tool compatibility across maintenance and production environments, supported by DIN 925 specifications for consistent dimensional accuracy in high-volume manufacturing operations.

Specification Summary & Compliance

This M2.5x0.45x4mm flat head screw maintains precise Class 6g thread fit tolerance per metric standards with 4mm length and 2.5mm extended tip configuration. Manufacturing complies with DIN 925 standard specifications for dimensional consistency and performance reliability. Environmental compliance includes RoHS 3 (2015/863/EU) with exemption 6(a) for lead as steel alloying element and full REACH (EC 1907/2006) compliance, ensuring suitability for regulated industrial markets and international supply chains.