S-94559A712 M4 x 8 mm Aluminum Oversized-Flange Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Enhanced load distribution with a wide 16.5mm flange, reducing surface pressure and preventing material damage during tightening
• Superior corrosion resistance and lightweight performance from 6061 Aluminum, ideal for applications where weight savings and durability are critical
• Secure, high-torque installation enabled by the 2.5mm internal hex drive, minimizing the risk of stripping and ensuring reliable fastening
• Consistent and reliable thread engagement with a Class 6g thread fit and coarse 0.7mm pitch, facilitating quick assembly and vibration resistance
• High mechanical strength with a tensile strength of 40,000 psi and Rockwell B40 hardness, ensuring long-term performance under stress
• Streamlined assembly process due to the fully threaded M4 design and low-profile button head, allowing for efficient installation in confined spaces
• Compliance with stringent environmental regulations, meeting RoHS 3 and REACH standards for safe use in various industrial sectors

Professional Applications & Engineering Value

This M4 flanged button head screw is engineered to address common challenges in precision assembly and lightweight structural applications. The 6061 Aluminum construction provides an excellent strength-to-weight ratio, making it ideal for aerospace components, electronics enclosures, and automotive assemblies where reducing mass is crucial without sacrificing integrity. The integrated flange eliminates the need for a separate washer, simplifying the bill of materials and speeding up installation while providing a larger bearing surface to prevent pull-through in softer materials. The Class 6g metric coarse thread ensures reliable performance in dynamic environments, resisting loosening under vibration, which is a common failure point in machinery and moving parts. Combined with the hex drive for secure tool engagement, this screw delivers consistent clamping force and is a dependable solution for OEMs and maintenance teams requiring repeatable, high-quality fastening.

Specification Summary & Compliance

This screw features precise M4 x 0.7mm coarse threading with a Class 6g tolerance as per metric standards, ensuring dimensional accuracy and interchangeability. The fully threaded 8mm length and specific head dimensions (6.4mm diameter, 4.85mm height) are manufactured to consistent industrial specifications. It is confirmed to be RoHS 3 (2015/863/EU) compliant under exemption 6(b)-II for lead in aluminum alloys and REACH (EC 1907/2006) compliant regarding SVHCs as of the stated declaration, affirming its suitability for regulated markets and environmentally conscious procurement.