S-90269A938 M27 ISO 7379 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh environments and extended service life.
• Enhanced durability and wear resistance provided by the black oxide finish, which also adds a sleek, non-reflective appearance.
• Precise alignment and smooth rotation enabled by the 80mm shoulder with standard fit, reducing wear on mating components.
• Secure and easy installation with a 14mm hex drive and knurled head, offering excellent grip and torque transmission.
• High mechanical strength with 70,000 psi tensile and 35,000 psi minimum shear strength, ensuring reliable performance under heavy loads.
• Accurate and reliable threading with Class 5g6g metric coarse thread (M27x3mm), providing consistent fit and engagement.
• Compliance with international standards including ISO 7379, RoHS 3, and REACH, guaranteeing quality and environmental safety for industrial use.

Professional Applications & Engineering Value

This M27x3mm shoulder screw is engineered to address critical alignment and load-bearing challenges in demanding industrial settings. The 316 stainless steel material offers exceptional resistance to corrosion from chemicals, saltwater, and extreme temperatures, making it ideal for marine, chemical processing, and outdoor machinery. The 80mm shoulder length and precise diameter tolerance ensure accurate positioning of moving parts like gears, pulleys, and linkages, minimizing vibration and misalignment. Combined with the black oxide finish, it reduces friction and galling, while the knurled socket head with a 14mm hex drive allows for quick, secure assembly in tight spaces. These features make it a top choice for applications requiring high tensile strength, longevity, and compliance with ISO 7379 and environmental regulations.

Specification Summary & Compliance

This shoulder screw adheres to metric system dimensions with a thread size of M27x3mm coarse and Class 5g6g thread fit for standard tolerance. The shoulder diameter is 30 mm with a tolerance of -0.072 to -0.01 mm, and shoulder length is 80 mm with a tolerance of 0 to 0.25 mm, ensuring precise engineering fits. It meets ISO 7379 specifications for shoulder screws and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), confirming it is free of hazardous substances and suitable for global industrial applications.