S-90910A941 M2.5 x 6 mm ASME B18.3.4M Stainless Steel Button Head Torx Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ensuring longevity in harsh industrial environments.
• Enhanced torque transmission and reduced cam-out thanks to the T6 Torx drive, providing secure and efficient installation.
• High mechanical strength with 100,000 psi tensile strength and Rockwell B96 hardness for reliable performance under stress.
• Precise and secure fastening with Class 4g6g coarse thread fit, ensuring consistent engagement and vibration resistance.
• Low-profile rounded button head design for a smooth, finished appearance and reduced snagging in compact assemblies.
• Full threading along the 6 mm length for maximum grip and uniform load distribution in various materials.
• Compliance with international standards including ASME B18.3.4M, RoHS 3, and REACH, guaranteeing safety and regulatory adherence.

Professional Applications & Engineering Value

This M2.5 metric screw is engineered to address common industrial challenges such as corrosion, vibration loosening, and installation efficiency. The 18-8 stainless steel material combined with a passivated finish provides excellent resistance to oxidation and chemicals, making it ideal for electronics, automotive, and machinery applications where environmental durability is critical. The Torx drive (T6 size) ensures high torque transfer with minimal tool wear, reducing assembly time and preventing damage to the screw head. With a coarse thread pitch of 0.45 mm and Class 4g6g thread fit, it offers quick engagement and reliable holding power in metals and plastics, minimizing the risk of strip-out. The rounded button head design not only enhances aesthetics but also prevents injury and interference in tight spaces, supporting efficient production lines and maintenance workflows.

Specification Summary & Compliance

This screw features precise metric dimensions (M2.5 x 0.45 mm pitch x 6 mm length) with a Class 4g6g thread fit per ISO standards, ensuring dimensional accuracy and interchangeability. It is manufactured in compliance with ASME B18.3.4M for consistent quality and performance. Additionally, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from hazardous substances and safe for use in various industrial and consumer products.