S-90909A720 M4 x 16 mm ISO 7380 Stainless Steel Flanged Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance in harsh environments thanks to premium 316 stainless steel construction and a passivated finish.
• Simplified and secure installation with a 2.5 mm internal hex drive that prevents cam-out and ensures a reliable, flush fit.
• Enhanced load distribution and component retention provided by the integrated 9.4 mm flange, eliminating the need for a separate washer.
• Reliable, coarse-pitch threading (M4 x 0.7 mm) for faster assembly and superior performance in materials where fine threads are not suitable.
• High mechanical strength with a tensile strength of 70,000 psi, ensuring integrity under significant stress.
• Guaranteed dimensional interchangeability and quality through strict adherence to the ISO 7380 international standard.
• Full regulatory compliance with RoHS 3 and REACH, making it suitable for use in regulated industries and global markets.

Professional Applications & Engineering Value

This 316 Stainless Steel Flanged Button Head Screw is engineered to solve critical challenges in demanding industrial applications. Its M4 coarse thread (Class 6g fit) ensures rapid and secure fastening in soft materials or where vibration resistance is paramount. The combination of a passivated finish and the inherent corrosion resistance of 316 stainless steel makes it an ideal choice for marine, chemical processing, and food-grade equipment, where exposure to moisture and aggressive agents is a constant concern. The integrated flange increases the bearing surface, preventing surface damage and loosening, while the rounded button head and hex drive offer a low-profile, aesthetically clean finish with high torque capability. This design directly addresses the need for durable, reliable, and maintenance-free fastening in critical assemblies.

Specification Summary & Compliance

This screw features an M4 x 0.7 mm coarse thread with a Class 6g tolerance for reliable fit. It is fully threaded and has a total length of 16 mm. The product is manufactured in full compliance with the ISO 7380 standard for dimensional and mechanical properties. It is also confirmed to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring it meets strict environmental and safety regulations for hazardous substances.