S-90323A437 M3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel and passivated finish for extended service life in harsh environments
• Precise component alignment through controlled shoulder diameter (4mm) and length (3mm) with tight tolerances for reliable assembly
• High-strength performance delivering 80,000 psi tensile strength and Rockwell B95 hardness for demanding mechanical applications
• Secure, low-profile installation with hex socket drive and low head design ideal for space-constrained assemblies
• Consistent thread engagement with Class 6g metric coarse threads (M3x0.5mm) ensuring reliable fastening in high-vibration settings
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for safe use in regulated industries
• Reduced assembly time with right-hand thread direction and 2mm hex drive enabling efficient installation and maintenance

Professional Applications & Engineering Value

Engineered for precision mechanical assemblies, these M3 shoulder screws solve critical alignment challenges in industrial equipment, automation systems, and precision instruments. The 18-8 stainless steel construction with passivated finish provides exceptional resistance to corrosion and chemical exposure, while the precisely machined shoulder maintains component positioning within ±0.025mm diameter tolerance. The hex socket low head profile allows flush mounting in confined spaces, making these metric shoulder screws ideal for securing rotating components, guiding linear motion systems, and maintaining alignment in high-vibration environments. The Class 6g thread fit ensures consistent engagement while the coarse pitch facilitates rapid assembly in production settings.

Specification Summary & Compliance

This precision shoulder screw features M3x0.5mm coarse pitch threads with Class 6g thread fit and 4mm thread length. The shoulder maintains precise dimensions with 4mm diameter (-0.025 to 0 mm tolerance) and 3mm length (0 to 0.05 mm tolerance). Manufactured from 18-8 stainless steel with passivated finish, the fastener delivers 80,000 psi tensile strength and Rockwell B95 hardness. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations for environmental safety.