S-90265A198 M4 ISO 7379 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and extended service life.
• Exceptional mechanical strength offering a tensile strength of 70,000 psi and shear strength of 45,000 psi for reliable performance in demanding applications.
• Precise location and smooth pivot action enabled by the 18mm shoulder with controlled diameter tolerance for accurate component alignment.
• Secure and efficient installation with a hex socket drive and knurled head texture, providing excellent grip and preventing tool slippage.
• Guaranteed interchangeability and fit through compliance with ISO 7379 standards and Class 5g6g thread fit for consistent quality.
• Environmental and regulatory compliance meeting RoHS 3 and REACH directives, ensuring safety and sustainability in your production processes.
• Optimized for high-stress assemblies with a Rockwell B83 hardness, offering excellent wear resistance and durability.

Professional Applications & Engineering Value

This M4 shoulder screw is engineered to address critical alignment and pivot challenges in industrial assemblies. The precision-machined 18mm shoulder acts as a dependable locating surface or bearing journal, eliminating the need for additional bushings and reducing assembly complexity. Manufactured from 18-8 stainless steel, it provides excellent corrosion resistance, making it suitable for machinery, automotive subsystems, and electronic enclosures exposed to moisture or chemicals. The combination of a hex socket drive and knurled head ensures high-torque installation without cam-out, while the coarse 0.7mm pitch thread facilitates quick and secure fastening. Its compliance with ISO 7379 guarantees dimensional accuracy, ensuring reliable performance in high-precision engineering applications and reducing the risk of mechanical failure.

Specification Summary & Compliance

This shoulder screw features an M4 x 0.7mm metric thread with a Class 5g6g thread fit for standard clearance. The shoulder diameter is 5 mm with a tolerance of -0.072 to -0.01 mm, and the shoulder length is 18 mm with a tolerance of 0 to 0.25 mm, ensuring precise dimensional control. It is manufactured in accordance with the ISO 7379 standard and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations.