S-91294A540 M2.5 x 25 mm Alloy Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with black-oxide coating on alloy steel, ideal for harsh industrial environments
• Superior tensile strength rated at 120,000 psi (Class 10.9) for reliable, high-load applications
• Precise Class 6g thread fit ensures smooth installation and secure fastening in metric assemblies
• Optimized drive engagement with 1.5mm hex drive for efficient torque transfer and reduced stripping risk
• Versatile partial threading allows unthreaded shank section for precise clamping and alignment control
• Industry-standard 90° countersink provides flush mounting in prepared surfaces for clean finishes
• Full regulatory compliance with RoHS 3 and REACH standards for global industrial use

Professional Applications & Engineering Value

This M2.5 flat head screw delivers critical performance where space constraints and material integrity matter most. The black-oxide alloy steel construction provides enhanced corrosion protection without dimensional changes, while the Class 10.9 strength rating (120,000 psi tensile strength) ensures reliable performance in vibrating or high-stress assemblies. The coarse 0.45mm pitch metric threading with Class 6g tolerance offers excellent engagement in both metals and engineered plastics, reducing cross-threading risks. The partially threaded design allows precise clamping force distribution, making these industrial fasteners ideal for machinery, automotive components, and electronic enclosures requiring flush-mounted, high-strength solutions.

Specification Summary & Compliance

Manufactured to precise metric standards with M2.5 x 0.45mm coarse threads and Class 6g thread fit tolerance. Features 25mm length with 11mm minimum thread length, 90° countersink angle, and Rockwell C32 hardness. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations for industrial applications worldwide.