S-96654A128 M4 Shoulder Screws

Key Features & Benefits at a Glance

• Secure vibration resistance with permanent nylon patch thread locking that maintains integrity across -70° to 250° F temperature ranges
• Exceptional corrosion resistance through 18-8 stainless steel construction and passivated finish for harsh industrial environments
• Precise component alignment enabled by the 12mm shoulder length with tight tolerances for stable assemblies
• Reliable thread engagement with Class 6g thread fit ensuring consistent fastening performance in metric applications
• High-strength durability delivering 70,000 psi tensile strength and Rockwell B55 hardness for demanding mechanical applications
• Easy installation and removal via standard hex socket drive requiring only 2.5mm hex key access
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for global industrial applications

Professional Applications & Engineering Value

This M4 shoulder screw with nylon patch locking technology addresses critical vibration-induced loosening in precision machinery and rotating equipment. The 18-8 stainless steel construction combined with passivated finish provides superior corrosion resistance for manufacturing environments exposed to moisture, chemicals, or outdoor conditions. The precisely machined 12mm shoulder length with controlled tolerances ensures accurate component positioning in assemblies requiring shaft alignment or rotational guidance. With its Class 6g thread fit and coarse 0.7mm pitch, this metric shoulder screw delivers reliable fastening in automation equipment, bearing retention systems, and precision instruments where movement stability is paramount. The hex socket drive design allows for secure installation in confined spaces common in industrial machinery maintenance and assembly operations.

Specification Summary & Compliance

This precision shoulder screw features M4 x 0.7mm coarse metric thread with Class 6g thread fit tolerance. The shoulder diameter maintains -0.025 to 0 mm tolerance while the critical 12mm shoulder length is controlled within 0 to 0.05 mm tolerance for precise fitment. Manufactured from 18-8 stainless steel with passivated finish, this component complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental compliance for industrial applications worldwide.