S-91273A342 M3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Enhanced torque transmission and alignment through the precision 24mm shoulder with tight diameter tolerance
• Reliable thread engagement with Class 5g6g metric coarse thread ensuring consistent fastening performance
• High-strength durability offering 70,000 psi tensile strength and Rockwell B55 hardness for demanding applications
• Secure installation and removal with knurled hex socket head providing excellent grip and slip resistance
• Broad industrial compatibility meeting RoHS 3 and REACH compliance for global regulatory requirements
• Optimized for precision assemblies with controlled shoulder length tolerance ensuring accurate component positioning

Professional Applications & Engineering Value

This M3 shoulder screw delivers critical engineering value in precision mechanical assemblies where exact component alignment and secure fastening are paramount. The 18-8 stainless steel material provides excellent corrosion resistance, making it suitable for automotive, electronics, and machinery applications exposed to moisture or chemicals. The 24mm shoulder length acts as a precise spacer or pivot, eliminating the need for additional bushings and reducing assembly complexity. With its hex socket drive and knurled head texture, installers achieve superior torque application without tool slippage, even in confined spaces. The Class 5g6g thread fit and coarse 0.5mm pitch ensure rapid assembly and reliable performance in high-vibration environments, providing engineers with a durable, compliant fastening solution that maintains integrity under shear and tensile loads up to 70,000 psi.

Specification Summary & Compliance

This precision shoulder screw features M3x0.5mm coarse right-hand thread with Class 5g6g tolerance per metric standards, ensuring consistent thread engagement. The shoulder diameter maintains a tight tolerance of -0.04 to -0.01 mm, while the shoulder length is controlled within 0 to 0.25 mm tolerance for precise positioning. Manufactured from 18-8 stainless steel with Rockwell B55 hardness, it complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and material reliability for industrial use.