S-90269A434 M1.6 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh or chemical-exposed environments.
• Enhanced durability and strength from Rockwell B79 hardness and 70,000 psi tensile strength, reducing failure risks under load.
• Precise component alignment thanks to the 3mm shoulder diameter with tight tolerance, minimizing assembly play.
• Secure and tamper-resistant installation with a hex socket drive and knurled head for improved grip during tightening.
• Reliable thread engagement via Class 5g6g metric coarse thread (M1.6 x 0.35mm), ensuring consistent fastening in various materials.
• Compliance with global safety standards including RoHS 3 and REACH, making it suitable for regulated industrial applications.
• Optimized for space-constrained assemblies with an 8mm shoulder length, providing stable bearing surfaces in compact designs.

Professional Applications & Engineering Value

This M1.6 shoulder screw is engineered to address common industrial challenges such as misalignment, vibration loosening, and corrosion. The 316 stainless steel material offers excellent resistance to chemicals and moisture, extending service life in demanding settings like marine equipment, medical devices, and food processing machinery. The socket head with hex drive allows for high-torque installation in confined spaces, while the knurled texture enhances handling. The Class 5g6g thread fit and coarse pitch ensure quick, reliable fastening in plastics or metals, reducing assembly time and improving operational reliability. Its precision shoulder acts as a pivot or spacer, critical in applications requiring exact positioning, such as in robotics, electronics, and precision instruments.

Specification Summary & Compliance

This shoulder screw features a metric M1.6 x 0.35mm coarse thread with Class 5g6g tolerance for consistent fit. The shoulder diameter is 3 mm with a tolerance of -0.072 to -0.01 mm, and shoulder length is 8 mm with a 0 to 0.25 mm tolerance, ensuring high dimensional accuracy. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free of hazardous substances and safe for industrial use.