S-90074A116 M8 x 40 mm Serrated-Flange Socket Head Screws

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with black-oxide coating for extended service life in demanding industrial environments
• Superior torque transmission via 6mm hex drive socket head, preventing tool slippage and ensuring secure installation
• Reliable vibration resistance from serrated locking flange that maintains clamp load under dynamic conditions
• Optimized strength-to-weight ratio through alloy steel construction with 140,000 psi tensile strength
• Precise thread engagement with Class 5g6g metric coarse threads for consistent fastening performance
• Versatile partial threading design allowing both threaded and unthreaded shaft sections for flexible application use
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for global manufacturing applications

Professional Applications & Engineering Value

This M8 socket head cap screw delivers critical engineering solutions where high-strength fastening and vibration resistance are paramount. The black-oxide alloy steel construction provides exceptional durability against wear and environmental exposure, while the serrated locking flange eliminates the need for separate washers and prevents loosening in machinery, automotive assemblies, and heavy equipment. The metric coarse thread (1.25mm pitch) ensures quick installation and reliable performance in high-vibration environments. With partial threading and precise Class 5g6g thread fit, this fastener offers optimal clamp load distribution for critical joints in manufacturing equipment, industrial automation systems, and structural applications where reliability cannot be compromised.

Specification Summary & Compliance

This flanged socket head cap screw features M8 x 1.25mm metric coarse threads with Class 5g6g thread fit tolerance, ensuring precision engagement. The 40mm length includes 28mm minimum thread length with partially threaded design. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming environmental safety standards. Mechanical properties include Rockwell C39 hardness and 140,000 psi tensile strength, meeting industrial fastener requirements for demanding applications.