S-90269A958 M33 ISO 7379 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh industrial environments and chemical exposure
• Enhanced durability and wear resistance from black oxide finish, providing long-lasting performance and reduced maintenance
• High tensile strength of 70,000 psi ensures reliable load-bearing capacity for heavy-duty applications
• Precise shoulder fit and thread accuracy (Class 5g6g) for secure alignment and reduced vibration in assemblies
• Easy installation and removal with 17mm hex drive and knurled head for improved grip and torque application
• Versatile 150mm shoulder length accommodates various component thicknesses, simplifying design and assembly processes
• Full compliance with ISO 7379 and environmental standards (RoHS 3, REACH) for guaranteed quality and safe usage

Professional Applications & Engineering Value

This M33 shoulder screw is engineered to address critical challenges in industrial machinery, automation systems, and precision equipment. The 316 stainless steel material offers exceptional resistance to corrosion and high temperatures, making it suitable for demanding environments like marine, chemical processing, and food manufacturing. The black oxide finish not only enhances aesthetics but also provides an added layer of protection against wear and galling. With its coarse metric thread (M33x3.5mm) and hex drive, this fastener ensures quick, secure installation, reducing assembly time and minimizing the risk of stripping. The precisely machined shoulder (36mm diameter, 150mm length) acts as a pivot or spacer, maintaining alignment in rotating assemblies and reducing stress on threaded sections. This design is ideal for applications requiring high shear strength and reliable performance under dynamic loads, such as conveyor systems, robotic arms, and heavy-duty fixtures.

Specification Summary & Compliance

This shoulder screw adheres to ISO 7379 standards, ensuring dimensional accuracy and interchangeability. The metric thread features a Class 5g6g fit for precise tolerance, while the shoulder diameter and length maintain tight tolerances (-0.072 to -0.01 mm and 0 to 0.25 mm, respectively). It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), confirming the absence of hazardous substances. Manufactured to deliver 70,000 psi tensile strength and 35,000 psi minimum shear strength, this fastener meets rigorous industrial requirements for safety and performance.