S-90269A460 M3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction and black oxide finish, ideal for harsh industrial environments and outdoor applications.
• Exceptional mechanical strength offering 70,000 psi tensile strength and 35,000 psi shear strength for reliable performance under high-stress conditions.
• Precise alignment and secure positioning enabled by the 4mm shoulder diameter and 7mm shoulder length, reducing wear on mating components.
• Easy installation and removal with the knurled socket head and 2mm hex drive, providing a secure grip even in tight spaces.
• Accurate and reliable thread engagement with Class 5g6g metric coarse thread (M3 x 0.5mm), ensuring consistent fastening and vibration resistance.
• Enhanced durability with a Rockwell B79 hardness, maintaining structural integrity and thread form over repeated use.
• Compliance with global environmental standards including RoHS 3 and REACH, ensuring safe and sustainable use in regulated industries.

Professional Applications & Engineering Value

This M3 shoulder screw is engineered to address critical challenges in precision assembly and machinery. The 316 stainless steel material provides excellent resistance to corrosion and chemical exposure, making it suitable for applications in marine, chemical processing, and food equipment. The black oxide finish not only enhances corrosion protection but also reduces light reflection, which is beneficial in optical and sensitive instrumentation. The knurled socket head with a 2mm hex drive allows for secure tool engagement, minimizing slippage during torque application. The precisely machined shoulder (4mm diameter, 7mm length) acts as a pivot or spacer, ensuring accurate alignment of components like gears, bearings, and linkages, thereby reducing misalignment and wear. This design is vital in industrial automation, robotics, and precision engineering where dimensional stability and repeatability are paramount.

Specification Summary & Compliance

This shoulder screw features a metric M3 x 0.5mm coarse thread with a Class 5g6g thread fit, ensuring high precision and interchangeability per ISO standards. The shoulder diameter tolerance is -0.072 to -0.01 mm, and shoulder length tolerance is 0 to 0.25 mm, providing tight control for engineering applications. It is manufactured to comply with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for use in environments with strict environmental and safety requirements.