S-90236A141 M4 x 50 mm ISO 14581 Alloy Steel Torx Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated alloy steel construction for extended service life in harsh environments
• Enhanced torque transmission and reduced cam-out with T20 Torx drive for reliable fastening in high-stress applications
• Flush, professional finish with 90° countersink angle and flat head design for seamless surface integration
• Exceptional mechanical strength with Class 8.8 rating and Rockwell C22 hardness for demanding industrial loads
• Reliable thread engagement with fully threaded M4 coarse pitch (0.7mm) and Class 6h fit for secure connections
• Global compliance assurance meeting ISO 14581 standards and environmental regulations including RoHS 3 and REACH
• Optimized for right-hand assembly with standard thread direction for efficient production line installation

Professional Applications & Engineering Value

These M4 flat head screws deliver critical engineering solutions where surface flushness and high-strength fastening are paramount. The zinc-plated alloy steel construction provides superior corrosion protection for machinery, automotive components, and outdoor equipment exposed to moisture and chemicals. The T20 Torx drive eliminates stripping issues common in Phillips drives, ensuring consistent torque application in automated assembly and maintenance operations. With Class 8.8 strength rating and Rockwell C22 hardness, these fasteners maintain integrity under vibration and dynamic loads in industrial machinery, electrical enclosures, and structural frameworks. The fully threaded coarse pitch design enables rapid installation while the 90° countersink creates clean, professional finishes in precision manufacturing applications.

Specification Summary & Compliance

This metric fastener features M4 x 0.7mm coarse threads with Class 6h thread fit tolerance per ISO standards, ensuring precise dimensional accuracy. Manufacturing complies with ISO 14581 specifications for flat head screw geometry and performance requirements. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming restriction of hazardous substances. The Class 8.8 strength classification corresponds to 800 MPa minimum tensile strength and 640 MPa yield strength, validated through Rockwell C22 hardness testing for consistent quality assurance.