S-90269A515 M3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh industrial and marine environments.
• Enhanced durability and wear resistance from the black oxide finish, providing a protective layer against abrasion.
• High mechanical strength with 70,000 psi tensile and 35,000 psi shear strength, ensuring reliable performance under heavy loads.
• Precise and secure assembly enabled by the Class 5g6g thread fit, minimizing the risk of loosening in vibration-prone applications.
• Easy installation and removal with the hex socket drive and 2.5 mm drive size, allowing for efficient tool engagement.
• Improved grip during manual handling thanks to the knurled head texture, reducing slippage.
• Accurate component alignment with the 20mm shoulder length and controlled diameter tolerance, providing a stable pivot or bearing surface.

Professional Applications & Engineering Value

This M3 shoulder screw is engineered to address critical assembly challenges in precision machinery, automation systems, and electronic enclosures. The 316 stainless steel material offers exceptional resistance to chemicals and saltwater corrosion, extending service life in demanding conditions. The black oxide finish not only enhances corrosion protection but also reduces light reflection, which is beneficial in optical and sensitive equipment. The knurled head and hex socket drive ensure secure tool engagement and manual handling, preventing stripping and improving installation efficiency. With a 20mm shoulder, it provides a precise locating diameter for rotating parts like gears and pulleys, minimizing misalignment and wear. This makes it an ideal precision shoulder screw for applications requiring reliable alignment and high tensile strength.

Specification Summary & Compliance

This shoulder screw features a Class 5g6g thread fit per metric standards, ensuring dimensional accuracy and interchangeability. The shoulder diameter tolerance is controlled between -0.072 to -0.01 mm, and the shoulder length tolerance is 0 to 0.25 mm for precise engineering fits. Manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, it meets stringent environmental and safety standards for industrial use.