S-93856A181 M3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ensuring long-term reliability in harsh industrial environments.
• High tensile and shear strength (70,000 psi tensile, 35,000 psi shear) for secure, durable fastening in demanding applications.
• Precision thread fit (Class 5g6g) guarantees consistent engagement and reduces the risk of cross-threading or loosening.
• Knurled socket head with 2.5 mm hex drive provides enhanced grip and prevents tool slippage during installation.
• Versatile shoulder design with customizable lengths (50-99.75 mm) for precise alignment and spacing in assemblies.
• Compliance with RoHS 3 and REACH ensures environmental safety and meets global regulatory standards.
• Coarse M3 x 0.5 mm thread enables quick assembly and disassembly, improving maintenance efficiency.

Professional Applications & Engineering Value

This M3 shoulder screw is engineered to address common industrial challenges such as misalignment, vibration-induced loosening, and corrosion. The 18-8 stainless steel material offers excellent resistance to rust and chemicals, making it ideal for machinery, automotive, and electronics where exposure to moisture or contaminants is a concern. The socket head with knurled texture and hex drive ensures secure tool engagement, reducing installation time and preventing damage to the fastener. With a precision Class 5g6g thread fit and robust shoulder design, it provides stable pivoting, accurate positioning, and reliable load distribution in assemblies like rotating shafts, linkages, and precision instruments, minimizing downtime and maintenance costs.

Specification Summary & Compliance

This shoulder screw features a metric M3 x 0.5 mm coarse thread with Class 5g6g thread fit for precise tolerance. The shoulder diameter tolerance ranges from -0.072 to -0.01 mm, and shoulder length tolerance is -0.05 to 0.05 mm, ensuring consistent dimensional accuracy. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious and industrial applications requiring high-performance fasteners.