S-93856A152 M3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and washdown applications.
• Enhanced assembly precision due to the Class 5g6g thread fit and tight shoulder diameter tolerance, ensuring consistent alignment and reduced play.
• High mechanical strength and durability from a Rockwell B55 hardness and 70,000 psi tensile strength, providing reliable performance under load.
• Secure, non-slip fastening enabled by the knurled socket head and 2mm hex drive, allowing for high-torque application without stripping.
• Versatile shoulder design with a precise 4mm diameter and selectable lengths, acting as a reliable pivot, axle, or spacer in assemblies.
• Broad compatibility with M3 x 0.5mm coarse thread metric systems, simplifying sourcing and integration into existing designs.
• Compliance with major environmental regulations including RoHS 3 and REACH, ensuring safety and suitability for global markets.

Professional Applications & Engineering Value

This M3 shoulder screw is engineered to address critical alignment and wear challenges in precision assemblies. The 18-8 stainless steel material offers excellent corrosion resistance, making it suitable for applications in machinery, medical devices, and electronics where exposure to moisture or chemicals is a concern. The Class 5g6g thread fit and controlled shoulder diameter tolerance (-0.072 to -0.01 mm) ensure a precise fit, minimizing backlash and vibration in rotating components like gears and bearings. The knurled socket head with a 2mm hex drive provides a secure grip for high-torque installation, reducing the risk of tool slippage and head damage. This combination of high tensile strength and dimensional accuracy delivers long-term reliability in demanding industrial applications, from automation systems to precision instruments.

Specification Summary & Compliance

This shoulder screw conforms to Metric system standards with an M3 x 0.5mm coarse pitch thread and a Class 5g6g thread fit for consistent engagement. The shoulder diameter maintains a tight tolerance of -0.072 to -0.01 mm, and the shoulder length tolerance is -0.05 to 0.05 mm, ensuring precise assembly. The product is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, affirming its adherence to environmental and safety regulations for industrial use.