S-90270A713 M3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and extended service life
• Precise component alignment ensured by the controlled shoulder diameter tolerance (-0.025 to 0 mm) for reduced assembly play and vibration
• High mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for reliable performance under load
• Efficient assembly and disassembly using the socket head drive, providing a secure grip and reducing the risk of tool slippage
• Accurate and secure fastening with the Class 6g metric coarse thread (M3x0.5mm), ensuring consistent thread engagement
• Compliance with environmental regulations, being RoHS 3 and REACH compliant for use in regulated industries and global markets
• Versatile 20mm shoulder length for spacing, pivoting, or locating components in assemblies with minimal tolerance variation

Professional Applications & Engineering Value

This M3 shoulder screw is engineered to address critical alignment and durability challenges in precision assemblies. The 18-8 stainless steel material offers excellent resistance to rust and corrosion, making it suitable for applications in electronics, machinery, and automotive sectors where exposure to moisture or chemicals is a concern. The precise shoulder fit with tight diameter and length tolerances minimizes radial play, ensuring accurate positioning of gears, bearings, or linkages. The socket head design allows for high torque application in confined spaces, while the Class 6g coarse thread facilitates quick installation and robust holding power. Its high tensile strength and hardness provide reliable performance in dynamic or high-stress environments, reducing maintenance needs and downtime.

Specification Summary & Compliance

This metric shoulder screw features an M3x0.5 mm coarse right-hand thread with Class 6g tolerance for consistent fit. The shoulder diameter is controlled to -0.025 to 0 mm, and the shoulder length is 20 mm with a tolerance of 0 to 0.05 mm, ensuring precise shoulder fit. Manufactured from 18-8 stainless steel, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance standards, confirming its suitability for environmentally conscious and regulated industrial applications.