S-98451A112 M3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 360 Brass material, ideal for harsh environments and reducing maintenance needs.
• Precise alignment and smooth rotation enabled by the 4mm shoulder diameter with tight tolerances (-0.025 to 0mm), minimizing wear in assemblies.
• High mechanical strength and durability from Rockwell B55 hardness and 40,000 psi tensile strength, ensuring long-lasting performance under load.
• Reliable thread engagement with Class 6g thread fit and M3x0.5mm coarse pitch, providing secure fastening and easy installation.
• Secure, high-torque driving using a 2mm hex drive in a socket head, preventing stripping and enabling efficient assembly in confined spaces.
• Environmental and regulatory compliance with RoHS 3 and REACH standards, ensuring safe use in global industrial applications.
• Consistent dimensional accuracy in shoulder length (5mm with 0 to 0.05mm tolerance) for repeatable positioning in precision mechanisms.

Professional Applications & Engineering Value

This M3 shoulder screw is engineered from 360 Brass to address common industrial challenges like corrosion and misalignment in mechanical assemblies. The precise shoulder diameter and length ensure accurate component positioning, reducing vibration and wear in applications such as rotating shafts, bearings, and linkages. With a Class 6g thread fit and coarse pitch, it offers quick, secure fastening even in high-vibration environments, while the socket head with hex drive allows for easy installation in tight spaces. Ideal for electronics, automotive, and machinery, this screw enhances reliability and extends service life by combining durable material properties with tight tolerances.

Specification Summary & Compliance

This shoulder screw adheres to Metric standards with an M3x0.5mm coarse thread and Class 6g thread fit for precise engagement. The shoulder features a diameter of 4mm with a tolerance of -0.025 to 0mm and a length of 5mm with 0 to 0.05mm tolerance, ensuring high dimensional accuracy. Manufactured from 360 Brass with a hardness of Rockwell B55 and tensile strength of 40,000 psi, it complies with RoHS 3 (2015/863/EU) under exemption 6(c) and REACH (EC 1907/2006), meeting essential environmental and safety regulations for industrial use.