S-91239A120 M3 x 16 mm ISO 7380 Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance from the Black-Oxide finish on Alloy Steel, ideal for harsh industrial environments.
• Superior strength and reliability with a Class 10.9 grade and 140,000 psi tensile strength, preventing fastener failure under high stress.
• High durability and wear resistance due to Rockwell C32 hardness, ensuring a long service life.
• Secure and efficient installation with a 2 mm hex drive and button-style rounded head, providing a flush finish and reducing tool slippage.
• Wide compatibility and easy assembly thanks to the M3 coarse thread (0.5 mm pitch) and Class 6g fit, ensuring smooth engagement in various materials.
• Maximum holding power from the fully threaded design, distributing load evenly along the entire 16 mm length.
• Guaranteed quality and safety through compliance with ISO 7380, RoHS 3, and REACH, meeting strict international standards.

Professional Applications & Engineering Value

This M3 x 0.5mm x 16mm Class 10.9 Black-Oxide Alloy Steel Rounded Head Hex Screw is engineered to address critical challenges in industrial assembly, such as vibration loosening and corrosion-induced failure. The Black-Oxide surface treatment on the Alloy Steel provides a robust barrier against moisture and chemicals, extending the fastener's life in demanding environments like automotive, machinery, and electronics. The fully threaded metric coarse thread (Class 6g fit) ensures rapid, secure installation with high pull-out resistance, while the rounded button head and 2 mm hex drive allow for low-profile, torque-efficient tightening in confined spaces. With a tensile strength of 140,000 psi and Rockwell C32 hardness, it reliably maintains clamp load in high-stress applications, reducing maintenance needs and enhancing overall equipment durability. Ideal for use where ISO 7380 standards are required, this screw delivers consistent performance in precision engineering projects.

Specification Summary & Compliance

This fastener features precise metric threading (M3 x 0.5 mm pitch, Class 6g fit) and a 16 mm length, manufactured to ISO 7380 specifications for dimensional accuracy. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for global industrial use. The Class 10.9 strength grade and material properties confirm adherence to high-performance standards, supporting reliable integration in assemblies requiring strict quality control.