S-90236A134 M4 x 16 mm ISO 14581 Alloy Steel Torx Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance through zinc-plated alloy steel construction, extending service life in demanding industrial environments
• Exceptional torque transmission and slip resistance with T20 Torx drive, preventing tool cam-out and fastener damage during installation
• High-strength Class 8.8 rating providing reliable performance for heavy-duty applications requiring dependable load-bearing capacity
• Flush mounting capability with 90° countersink angle and standard flat head profile for clean, aerodynamic surfaces
• Optimized thread engagement through coarse M4 x 0.7mm threading and Class 6h fit ensuring secure fastening in various materials
• Full thread coverage along the 16mm length for maximum grip strength and uniform stress distribution
• Consistent hardness (Rockwell C22) maintaining dimensional stability and preventing deformation under stress

Professional Applications & Engineering Value

This M4 flat head screw delivers critical engineering solutions where reliable fastening meets precision requirements. The zinc-plated alloy steel construction combats corrosion in industrial settings, while the Class 8.8 strength rating ensures structural integrity under vibration and heavy loads. The T20 Torx drive eliminates cam-out issues common in Phillips drives, providing superior torque transfer for consistent installation in automated assembly lines. The 90° countersink angle and flat head design create seamless surfaces in machinery, electronics, and automotive applications where protrusions are unacceptable. With fully threaded coarse pitch configuration, these screws provide maximum holding power in metals, plastics, and composite materials, making them ideal for high-performance industrial fastening where failure is not an option.

Specification Summary & Compliance

This fastener maintains Class 6h thread fit tolerance for precise metric threading applications and complies with ISO 14581 manufacturing specifications. The product meets RoHS 3 (2015/863/EU) compliance for restricted hazardous substances and REACH (EC 1907/2006) regulations for chemical safety. Manufactured to exacting standards with right-hand metric threading and Rockwell C22 hardness certification, ensuring consistent performance across industrial applications requiring heavy-duty fastening solutions.