S-90269A942 M27 ISO 7379 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance in harsh environments due to 316 stainless steel construction and protective black oxide finish.
• Exceptional mechanical strength with a tensile strength of 70,000 psi and shear strength of 35,000 psi for reliable performance in heavy-duty applications.
• Precise alignment and location of components is ensured by the 30mm shoulder diameter with a tight tolerance of -0.072 to -0.01 mm.
• Secure and stable assembly is achieved with the 130mm shoulder length, providing a robust bearing surface.
• Easy installation and removal facilitated by the knurled socket head and 14mm hex drive, offering excellent grip and torque transmission.
• Reliable thread engagement and interchangeability guaranteed by the Class 5g6g thread fit and compliance with ISO 7379 standards.
• Environmental and regulatory compliance assured by meeting RoHS 3 and REACH directives, making it suitable for global markets.

Professional Applications & Engineering Value

This M27x3mm metric shoulder screw is engineered to address critical challenges in precision machinery and industrial assemblies. The 316 stainless steel material provides outstanding resistance to corrosion, acids, and chlorides, making it ideal for use in chemical processing, marine, and food industry equipment where exposure to corrosive elements is common. The black oxide finish further enhances durability and reduces galling. The coarse thread (M27x3mm) and Class 5g6g thread fit ensure quick assembly and high vibration resistance, reducing the risk of loosening in dynamic applications. The precisely machined shoulder (30mm diameter, 130mm length) acts as a pivot, axle, or locator, eliminating the need for additional spacers and simplifying design in automation systems, conveyor rollers, and precision jigs. This screw delivers long-term reliability, minimizing maintenance downtime and enhancing operational efficiency in demanding environments.

Specification Summary & Compliance

This shoulder screw adheres to ISO 7379 for dimensional consistency and performance. Thread specifications include a Class 5g6g fit for standard internal thread mating. The shoulder diameter tolerance is -0.072 to -0.01 mm, and shoulder length tolerance is 0 to 0.25 mm, ensuring precise assembly. It is manufactured from 316 stainless steel with a Rockwell B79 hardness and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance for environmental safety.