S-90323A603 M2 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh environments and extended service life.
• Precise component alignment enabled by the 3mm shoulder diameter with tight tolerance (-0.025 to 0 mm), reducing assembly errors and improving product quality.
• High mechanical strength offering 85,000 psi tensile strength and Rockwell B90 hardness for reliable performance under load in demanding applications.
• Secure, low-profile installation with the low socket head and 1.5mm hex drive, allowing for compact designs and reduced risk of stripping during tightening.
• Accurate and durable thread engagement due to Class 6g thread fit and coarse 0.4mm pitch, ensuring consistent fastening and vibration resistance.
• Compliance with environmental regulations including RoHS 3 and REACH, making it suitable for global industrial and electronic markets.
• Optimized for space-constrained assemblies with a total shoulder length of 4mm and smooth head texture, facilitating easy integration and smooth operation.

Professional Applications & Engineering Value

This M2 shoulder screw is engineered to address critical challenges in precision assemblies, such as misalignment and component wear. Made from 18-8 stainless steel with a passivated finish, it resists corrosion in moist or chemical-laden settings, extending equipment lifespan in industries like electronics, automotive, and medical devices. The low socket head profile and 1.5mm hex drive enable secure installation in tight spaces, reducing the need for rework. With a Class 6g thread fit and precise shoulder dimensions, it ensures accurate positioning of parts like gears and bearings, minimizing backlash and improving overall system reliability. This makes it an ideal choice for applications requiring high tensile strength and dimensional stability, from robotics to consumer electronics.

Specification Summary & Compliance

This shoulder screw adheres to metric system standards with an M2 thread size, 0.4mm coarse pitch, and Class 6g thread fit for consistent performance. Dimensions include a shoulder diameter of 3 mm (tolerance: -0.025 to 0 mm) and shoulder length of 4 mm (tolerance: 0 to 0.05 mm), ensuring precise assembly. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, supporting use in regulated environments. Manufactured with a focus on durability and accuracy, it is suitable for industrial applications demanding reliable fastening solutions.