S-90358A119 M3 x 20 mm Alloy Steel Ultra-Low-Profile Socket Head Screws

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with black-oxide coating, extending service life in harsh industrial environments.
• Superior strength and durability from alloy steel construction, supporting high-stress applications with 140,000 psi tensile strength.
• Precise and reliable thread engagement due to Class 5g6g thread fit, minimizing the risk of loosening under vibration.
• Space-saving design with an ultra-low socket head, ideal for compact assemblies where clearance is limited.
• Easy installation and removal using a standard 2 mm hex key, reducing assembly time and tool requirements.
• Consistent dimensional accuracy with tight length tolerance (±0.127 mm), ensuring uniform performance in automated or precision setups.
• Compliance with environmental regulations including RoHS 3 and REACH, making them safe for global industrial supply chains.

Professional Applications & Engineering Value

These M3 socket head cap screws are engineered to address common challenges in precision machinery, electronics, and automotive systems. The black-oxide alloy steel provides excellent resistance to wear and mild corrosion, while the ultra-low profile head allows for tight spaces without compromising strength. With a fully threaded metric coarse design and Class 5g6g thread fit, they ensure secure fastening in high-vibration environments, reducing maintenance needs. Ideal for applications requiring high tensile strength and reliable performance, these screws support efficient assembly and long-term operational stability in demanding industrial settings.

Specification Summary & Compliance

This product features a metric coarse thread with M3 x 0.5 mm pitch and Class 5g6g thread fit, adhering to standard dimensional tolerances (length tolerance: -0.127 mm to 0.127 mm). Manufactured from alloy steel with a hardness of Rockwell C32, it meets rigorous performance standards. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), ensuring environmental safety and regulatory adherence for industrial use.