S-97654A669 M8 x 40 mm Stainless Steel Flanged Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish for extended service life in harsh environments
• Enhanced torque transmission through the 5 mm hex drive design, preventing tool slippage during installation
• Increased load distribution thanks to the 17.8 mm flange diameter, reducing surface pressure and material stress
• Reliable thread engagement with Class 6g metric coarse threads ensuring consistent fastening performance
• Full-length threading provides maximum grip along the entire 40 mm length for superior holding power
• High tensile strength rated at 70,000 psi for demanding industrial applications
• Regulatory compliance with RoHS 3 and REACH standards for environmentally responsible manufacturing

Professional Applications & Engineering Value

These M8 metric screws with 1.25 mm coarse pitch threading are engineered to address critical fastening challenges in industrial settings. The combination of 18-8 stainless steel material and passivated finish provides exceptional resistance to corrosion, oxidation, and chemical exposure, making them ideal for machinery, automotive assemblies, and outdoor equipment where environmental factors degrade ordinary fasteners. The integrated flange design eliminates the need for separate washers, streamlining installation while providing superior clamping force distribution. The hex drive configuration ensures secure tool engagement, preventing cam-out during high-torque applications. These fully threaded rounded head screws deliver consistent performance in vibration-prone environments, maintaining joint integrity where loosening could compromise safety and operational efficiency.

Specification Summary & Compliance

This flanged hex drive screw features M8 x 1.25 mm metric coarse threads with Class 6g tolerance for precise fitment. The fastener is manufactured from 18-8 stainless steel with passivated finish and measures 40 mm in length with a 17.8 mm flange diameter. The product complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring adherence to international standards for hazardous substance restrictions and chemical safety in industrial components.