S-90270A651 M3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction for long-lasting performance in harsh environments
• Precise component alignment enabled by the 4mm shoulder with tight diameter tolerance (-0.025 to 0 mm) for reduced assembly vibration
• High mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for demanding industrial applications
• Reliable thread engagement through Class 6g thread fit and M3x0.5 coarse thread design for secure fastening
• Easy installation and removal with socket head drive providing superior torque transmission compared to slotted alternatives
• Regulatory compliance assurance with RoHS 3 and REACH compliance for global market acceptance
• Right-hand thread design for standard clockwise tightening compatible with most industrial equipment

Professional Applications & Engineering Value

This M3 shoulder screw delivers critical engineering value in precision assemblies where component alignment and rotational stability are paramount. The 4mm shoulder length with precise diameter control acts as a built-in spacer, eliminating the need for additional bushings in machinery, conveyor systems, and robotic arms. Manufactured from 18-8 stainless steel, these socket head shoulder screws resist chemical exposure and oxidation in manufacturing environments, while the Class 6g thread fit ensures consistent engagement in threaded holes without cross-threading risks. The combination of 70,000 psi tensile strength and Rockwell B55 hardness makes these metric shoulder screws ideal for high-stress applications in automation equipment, medical devices, and electronic enclosures where vibration resistance and dimensional accuracy are critical performance factors.

Specification Summary & Compliance

This precision M3x0.5 shoulder screw features Class 6g thread fit per metric standards with 4mm shoulder length (tolerance: 0 to 0.05 mm) and 4mm shoulder diameter (tolerance: -0.025 to 0 mm). The right-hand coarse thread (M3x0.5) ensures compatibility with standard metric components. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming environmental responsibility and material safety for industrial applications worldwide.