S-90358A005 M4 x 8 mm Alloy Steel Ultra-Low-Profile Socket Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide coating, extending service life in demanding industrial environments
• Maximum torque transmission through ultra-low socket head profile and 2.5mm hex drive, reducing tool slippage and head stripping
• Exceptional mechanical strength with Rockwell C32 hardness and 140,000 psi tensile strength, ensuring reliable performance under high stress
• Precision thread engagement with Class 5g6g thread fit, providing consistent clamping force and vibration resistance
• Easy installation in confined spaces due to compact socket head design and fully threaded right-hand configuration
• Strict dimensional control with ±0.127mm length tolerance, ensuring perfect fit and interchangeability in precision assemblies
• Global compliance readiness with RoHS 3 and REACH regulations, meeting international environmental and safety standards

Professional Applications & Engineering Value

These M4 socket head cap screws deliver critical engineering solutions where space constraints and high-strength requirements intersect. The black-oxide alloy steel construction provides essential corrosion protection while maintaining the 140,000 psi tensile strength needed for heavy-duty applications. The ultra-low socket head profile allows for deeper counterbores in compact designs, while the 2.5mm hex drive ensures maximum torque transfer without cam-out. The Class 5g6g thread fit guarantees precise engagement in metric threaded components, preventing loosening under vibration in machinery, automation systems, and precision equipment. The fully threaded right-hand design with coarse pitch enables rapid installation and superior holding power across the entire fastener length.

Specification Summary & Compliance

This socket head cap screw features precision M4 x 0.7mm coarse pitch threading with Class 5g6g thread fit per ISO metric standards. Length tolerance is maintained within -0.127mm to +0.127mm for dimensional accuracy. Manufactured from alloy steel with Rockwell C32 hardness and 140,000 psi tensile strength. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for industrial use worldwide.