S-90269A557 M4 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh environments and chemical exposure.
• Exceptional mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength for reliable performance under high stress.
• Precise alignment and spacing ensured by the 5mm shoulder with controlled diameter and length tolerances.
• Easy, high-torque installation with the hex socket head and 3 mm drive, reducing tool slippage and assembly time.
• Durable, wear-resistant surface thanks to the black oxide finish, which also provides a sleek, non-reflective appearance.
• Accurate and secure fastening with Class 5g6g thread fit and M4x0.7 coarse thread for quick assembly and vibration resistance.
• Compliance with global standards including RoHS 3 and REACH, ensuring safety and environmental responsibility for industrial use.

Professional Applications & Engineering Value

This M4 shoulder screw is engineered to address critical challenges in precision assembly and machinery. The 316 stainless steel material provides excellent resistance to corrosion and oxidation, making it suitable for marine, chemical processing, and food industry applications where moisture and chemicals are prevalent. The integrated 5mm shoulder acts as a precise pivot, spacer, or bearing surface, eliminating the need for additional components and reducing assembly errors. With a hex socket head and black oxide finish, it allows for high-torque installation without damaging the head, while the Class 5g6g thread fit ensures consistent engagement and load distribution. Ideal for use in robotics, conveyor systems, and automotive fixtures, this screw enhances equipment longevity and reduces maintenance downtime in demanding environments.

Specification Summary & Compliance

This shoulder screw features an M4x0.7 metric coarse thread with a Class 5g6g thread fit for precise tolerance. The shoulder diameter is 6 mm with a tolerance of -0.072 to -0.01 mm, and the shoulder length is 5 mm with a tolerance of 0 to 0.25 mm, ensuring accurate alignment. Manufactured from 316 stainless steel with a black oxide finish, it achieves a hardness of Rockwell B79, 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) regulations, meeting industry standards for safety and environmental responsibility.