S-90269A518 M3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh environments and chemical exposure
• Precise component alignment ensured by the 5mm shoulder diameter with tight tolerance control
• High mechanical strength with 70,000 psi tensile strength and Rockwell B79 hardness for reliable load-bearing performance
• Secure, slip-resistant installation using the 2.5mm hex socket drive and knurled head texture
• Consistent thread engagement provided by Class 5g6g metric coarse thread (M3x0.5) for vibration resistance
• Stable shaft positioning with 10mm shoulder length for accurate spacing in assemblies
• Environmental compliance assurance meeting RoHS 3 and REACH regulations for global industrial use

Professional Applications & Engineering Value

This M3 shoulder screw delivers critical precision in applications requiring exact component spacing and alignment. The 316 stainless steel material provides exceptional resistance to corrosion and oxidation, making it suitable for marine, chemical processing, and food equipment where moisture and chemicals are present. The 5mm shoulder diameter and 10mm shoulder length create a stable shaft that prevents lateral movement in bearings, pulleys, and rotating mechanisms. The Class 5g6g thread with 0.5mm coarse pitch ensures quick assembly and reliable performance in vibrating environments. Combined with the hex socket drive and knurled head, it offers secure installation without cam-out, reducing maintenance downtime in automated machinery and precision instruments.

Specification Summary & Compliance

This shoulder screw features M3x0.5 metric coarse thread with Class 5g6g thread fit per ISO standards, ensuring dimensional accuracy. The shoulder diameter tolerance is -0.072 to -0.01 mm, and shoulder length tolerance is 0 to 0.25 mm for precise fitment. Manufactured from 316 stainless steel with Rockwell B79 hardness, it meets mechanical requirements of 70,000 psi tensile strength and 35,000 psi minimum shear strength. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for restricted substance-controlled industrial applications.