S-92981A746 M3 ISO 7379 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional strength and durability with 140,000 psi tensile strength and Rockwell C32 hardness for reliable performance in demanding applications
• Superior corrosion resistance provided by the black oxide finish, extending service life in harsh industrial environments
• Precision engineering with Class 5g6g thread fit and controlled shoulder diameter tolerance (-0.072 to -0.01 mm) ensuring consistent assembly and alignment
• Optimized for high-torque applications featuring a 2mm hex socket drive that prevents stripping and allows for secure installation
• Versatile shoulder design with 4mm shoulder diameter and 30mm shoulder length providing accurate component positioning and pivot points
• Industry-standard compliance meeting ISO 7379 specifications for guaranteed interchangeability and performance reliability
• Environmental responsibility with RoHS 3 and REACH compliance, ensuring safe use across regulated industries

Professional Applications & Engineering Value

This M3 shoulder screw delivers critical engineering value in precision assembly applications where alignment accuracy and mechanical strength are paramount. The alloy steel construction with black oxide finish provides exceptional corrosion resistance while maintaining the high tensile strength (140,000 psi) required for demanding mechanical systems. The precisely machined shoulder diameter (4mm) and length (30mm) serve as reliable locating surfaces in machinery, jigs, and fixtures, eliminating the need for additional bushings or spacers. The Class 5g6g thread fit and coarse thread pitch (0.5mm) ensure secure fastening in metal components while the socket head design with 2mm hex drive accommodates confined spaces in automation equipment, robotics, and precision instruments. This metric shoulder screw solves alignment challenges while providing the durability needed for repeated assembly cycles.

Specification Summary & Compliance

This precision shoulder screw features M3 x 0.5mm coarse metric threads with Class 5g6g thread fit tolerance, ensuring consistent engagement and reliable fastening. The shoulder diameter maintains tight tolerance control (-0.072 to -0.01 mm) while the shoulder length tolerance (0 to 0.25 mm) guarantees precise component positioning. Manufactured to ISO 7379 specifications, this component demonstrates full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making it suitable for use across various industrial sectors with strict material requirements.