S-90269A135 M4 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance for harsh environments thanks to 316 stainless steel construction
• Exceptional mechanical strength with a 70,000 psi tensile strength and Rockwell B79 hardness for reliable, long-lasting performance
• Precise alignment and smooth rotation ensured by the 30mm shoulder with a tightly controlled diameter tolerance
• Secure, non-slip fastening enabled by the knurled hex socket head, preventing tool slippage during installation
• Wide compatibility and easy assembly with a standard M4x0.7 coarse thread and Class 5g6g fit for consistent engagement
• Compliance with stringent environmental regulations, being RoHS 3 and REACH compliant for global industrial use
• High shear strength (35,000 psi minimum) to withstand significant lateral forces in dynamic applications

Professional Applications & Engineering Value

This M4 shoulder screw is engineered to address critical alignment and pivot point requirements in demanding assemblies. The 316 stainless steel material provides excellent resistance to chemicals, saltwater, and other corrosive elements, making it ideal for industrial applications in food processing, marine, and chemical equipment. The precision-ground 30mm shoulder acts as a sturdy axle or locating dowel, maintaining exact part spacing and reducing wear on mating components. Combined with the Class 5g6g thread fit, it ensures vibration-resistant fastening without binding. The knurled hex socket head offers superior torque transmission, preventing cam-out and damage in high-stakes automated assembly lines, thereby reducing maintenance downtime and improving overall system reliability.

Specification Summary & Compliance

This precision shoulder screw features an M4x0.7 coarse metric thread with a Class 5g6g tolerance for a secure, standard fit. The shoulder diameter is manufactured to a tight tolerance of -0.072 to -0.01 mm, and the shoulder length is held to 0 to +0.25 mm for precise application. The component is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets the latest environmental and safety standards for industrial components.