S-90269A943 M27 ISO 7379 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 316 Stainless Steel material, ideal for harsh or chemical-exposed environments.
• Precise component alignment and pivot points enabled by the 30mm shoulder diameter with tight tolerance control.
• High-strength performance offering 70,000 psi tensile strength and 35,000 psi shear strength for demanding mechanical applications.
• Secure, non-slip installation with the knurled head and 14mm hex socket drive, allowing for high-torque application.
• Superior durability and wear resistance from the Black Oxide finish and Rockwell B79 hardness.
• Reliable thread engagement with Class 5g6g fit and coarse M27x3mm thread, ensuring consistent fastening in industrial assemblies.
• Extended shoulder length of 140mm provides stable support for rotating parts or spacers in machinery.

Professional Applications & Engineering Value

This M27x3mm shoulder screw is engineered to address critical alignment and durability challenges in precision industrial applications. The 316 Stainless Steel construction and Black Oxide finish provide superior resistance to corrosion and oxidation, making it suitable for use in chemical processing, marine equipment, and food machinery. The 30mm shoulder diameter with controlled tolerances ensures exact positioning of components like gears, bearings, and linkages, reducing wear and misalignment. The hex socket drive and knurled head facilitate secure installation in high-vibration environments, while the 140mm shoulder length acts as a sturdy axle or spacer, enhancing the longevity and reliability of mechanical assemblies. This screw is a robust solution for engineers seeking to improve assembly precision and operational lifespan.

Specification Summary & Compliance

This shoulder screw features a Metric M27x3mm coarse thread with a Class 5g6g thread fit for standard industrial use. The shoulder diameter tolerance is -0.072 to -0.01 mm, and shoulder length tolerance is 0 to 0.25 mm, ensuring high dimensional accuracy. It is manufactured in compliance with ISO 7379 specifications and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, confirming its suitability for global industrial and commercial applications.