S-90557A110 M1.4 x 2.5 mm DIN 925 Steel Slotted Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide steel coating for extended service life in demanding industrial environments
• Precise thread engagement with Class 4h fit ensuring reliable fastening in precision assemblies
• Optimized drive performance through slotted head design for straightforward installation with standard tools
• Enhanced material strength with Rockwell B71 hardness and 60,000 psi tensile strength for high-load applications
• Streamlined flush mounting with 90° countersink angle and flat head profile for seamless surface integration
• Extended tip design providing improved alignment and easier thread start in challenging installations
• Regulatory compliance assurance meeting DIN 925 standards and environmental regulations for global manufacturing

Professional Applications & Engineering Value

This M1.4 metric flat head screw delivers exceptional engineering value in precision mechanical assemblies where space constraints and reliability are paramount. The black-oxide steel construction provides superior corrosion protection in industrial environments, while the Class 4h thread fit ensures precise mating with components requiring exact tolerances. The fully threaded design with coarse thread spacing offers maximum holding power across the entire fastener length, making it ideal for electronic enclosures, precision instruments, and miniature mechanical systems. The extended 1mm tip facilitates easier alignment in blind holes and complex assemblies, reducing installation time and improving production efficiency. Engineered to DIN 925 specifications, this slotted drive screw maintains consistent performance in high-vibration applications common in automotive, aerospace, and industrial equipment manufacturing.

Specification Summary & Compliance

This precision fastener features Class 4h thread tolerance for exact metric threading applications, manufactured to DIN 925 standards for dimensional accuracy and performance reliability. The product maintains full compliance with RoHS 3 (2015/863/EU) under exemption 6(a) for lead as an alloying element in steel, and meets REACH (EC 1907/2006) requirements as of January 17, 2023. The right-hand thread with 0.3mm pitch and coarse thread spacing ensures optimal performance in industrial fastening applications requiring consistent thread engagement and reliable mechanical properties.