S-90265A339 M8 ISO 7379 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional Corrosion Resistance: Crafted from 18-8 Stainless Steel for long-lasting performance in harsh environments, reducing maintenance and replacement costs.
• High Mechanical Strength: Offers a 70,000 psi tensile strength and 45,000 psi minimum shear strength, ensuring reliable fastening under significant loads.
• Precision Shoulder for Accurate Alignment: Features a 12mm diameter shoulder with tight tolerances to act as a pivot, bearing surface, or spacer, minimizing assembly misalignment.
• Secure and Slippage-Resistant Drive: The 6mm hex socket drive combined with a knurled head provides superior torque transmission and easier handling, even with gloves.
• Reliable Thread Engagement: Class 5g6g thread fit on the M8x1.25 coarse pitch thread ensures consistent and secure mating with nuts and tapped holes.
• Guaranteed Dimensional Consistency: Manufactured to ISO 7379 standards, guaranteeing interchangeability and fit in metric assemblies worldwide.
• Safe for Regulated Industries: Compliant with RoHS 3 and REACH regulations, making it suitable for electronics, medical devices, and other sensitive applications.

Professional Applications & Engineering Value

This M8 shoulder screw is engineered to solve critical alignment and pivot-point challenges in precision industrial assemblies. The 16mm shoulder length with its controlled diameter acts as a precise locating dowel or axle, eliminating the need for additional bushings or spacers and reducing component count. The 18-8 Stainless Steel construction provides excellent resistance to rust and corrosion, which is vital for machinery in humid or washdown environments. The combination of a hex socket drive and a knurled head texture ensures that the screw can be securely tightened in confined spaces without cam-out, while the right-hand metric thread offers reliable fastening in dynamic applications. This makes it an indispensable component in automation equipment, conveyor systems, and precision jigs and fixtures.

Specification Summary & Compliance

This socket head shoulder screw features an M8x1.25 coarse pitch thread with a Class 5g6g thread fit for standard engagement. The shoulder is manufactured to a diameter of 12 mm with a tolerance of -0.072 to -0.01 mm and a length of 16 mm with a tolerance of 0 to 0.25 mm, ensuring high dimensional accuracy. The product is manufactured in compliance with the ISO 7379 standard and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations.