S-90269A204 M3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh industrial environments and outdoor applications.
• High mechanical strength and durability with Rockwell B79 hardness and 70,000 psi tensile strength, ensuring reliable performance under load.
• Precise alignment and spacing provided by the 4mm shoulder diameter, reducing wear and simplifying assembly in machinery and fixtures.
• Secure, slip-resistant installation with a knurled head and 2mm hex socket drive, allowing for high torque application and easy handling.
• Accurate and reliable threading with Class 5g6g fit and coarse 0.5mm pitch, enabling quick assembly and strong holding power.
• Compliance with environmental standards including RoHS 3 and REACH, ensuring safe use in regulated industries and global markets.
• Versatile metric sizing with M3 thread and 5mm thread length, compatible with standard industrial components and designs.

Professional Applications & Engineering Value

This M3 shoulder screw in 316 stainless steel is engineered to address common industrial challenges such as misalignment, corrosion, and mechanical failure. The socket head with hex drive and knurled texture ensures a firm grip during installation, preventing tool slippage and damage in high-vibration environments like assembly lines and automotive systems. The shoulder diameter of 4mm acts as a precise pivot or spacer, critical in applications like rotating shafts, bearings, and electronic enclosures where exact positioning is essential. Its coarse pitch thread and Class 5g6g fit provide quick, secure fastening, reducing assembly time while maintaining integrity under shear and tensile stresses up to 70,000 psi. Ideal for use in precision machinery, medical devices, and marine equipment, this screw offers long-term reliability and compliance with stringent industry regulations.

Specification Summary & Compliance

This shoulder screw features a metric M3 x 0.5mm coarse pitch thread with a Class 5g6g tolerance for precise fit. The shoulder diameter is 4mm with a tolerance of -0.072 to -0.01 mm, and shoulder length is 3mm with a tolerance of 0 to 0.25 mm, ensuring high dimensional accuracy. Manufactured from 316 stainless steel with a hardness of Rockwell B79, it meets mechanical standards including a tensile strength of 70,000 psi and minimum shear strength of 35,000 psi. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), supporting use in environmentally conscious and regulated industrial applications.