S-90263A122 M3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction and passivated finish for extended service life in harsh environments
• Precise component alignment ensured by controlled 4mm shoulder diameter with tight ±0.025mm tolerance
• Exceptional mechanical strength delivering 70,000 psi tensile strength and Rockwell B79 hardness for demanding applications
• Secure hex drive engagement with 2mm socket head providing reliable torque transmission and reduced stripping risk
• Optimized thread performance through Class 6g metric coarse threads ensuring consistent fastening in industrial assemblies
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for global industrial applications
• Consistent dimensional stability with precision-controlled 5mm shoulder length maintaining repeatable positioning accuracy

Professional Applications & Engineering Value

This M3 shoulder screw delivers critical engineering value in precision assembly applications where alignment accuracy and corrosion resistance are paramount. The 316 stainless steel construction with passivated finish provides exceptional protection against chemical exposure and atmospheric corrosion, making it ideal for medical equipment, food processing machinery, and marine applications. The precisely machined 4mm shoulder diameter with tight tolerance control serves as a reliable locating feature in jigs, fixtures, and rotating assemblies, eliminating the need for additional alignment components. The socket head hex drive design allows for high torque application in confined spaces, while the Class 6g thread fit ensures consistent clamping force in automated assembly processes. This combination of precision manufacturing and material excellence solves common industrial challenges including misalignment, corrosion-induced failure, and assembly inconsistency.

Specification Summary & Compliance

This precision metric shoulder screw features M3x0.5 coarse right-hand threads with Class 6g thread fit per ISO standards. Critical dimensions include shoulder diameter (4mm with -0.025 to 0mm tolerance) and shoulder length (5mm with 0 to 0.05mm tolerance) for precise positioning applications. The component is manufactured from 316 stainless steel with passivated finish and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance requirements for industrial use worldwide.