S-97505A104 M3 DIN 923 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc plating, ideal for demanding industrial environments
• High-strength alloy steel construction providing 58,000 psi tensile strength for reliable, durable connections
• Precision shoulder positioning with a tight -0.03mm diameter tolerance ensuring accurate component alignment
• Class 6g thread fit offering excellent assembly consistency and vibration resistance in coarse pitch applications
• Low-profile socket head design for space-constrained applications while allowing secure tool engagement
• Rockwell B71 hardness maintaining thread integrity and wear resistance through repeated use
• Compliance with DIN 923 standard guaranteeing interchangeability and quality in European machinery applications

Professional Applications & Engineering Value

This M3 shoulder screw delivers critical engineering value in applications requiring precise axial positioning and rotational control. The alloy steel core with zinc plating combats corrosion in humid or chemically aggressive environments, extending service life in automation equipment, precision instruments, and assembly jigs. The 4mm shoulder diameter with minimal tolerance acts as a precision pivot or spacer, eliminating misalignment in rotating assemblies like gears, pulleys, and linkages. With its coarse metric thread and Class 6g fit, it resists loosening under vibration while facilitating faster assembly in high-volume production lines, making it an optimal choice for industrial fasteners in machinery manufacturing and electronic enclosures where reliability is paramount.

Specification Summary & Compliance

This shoulder screw features a Class 6g thread fit per ISO metric standards with M3x0.5 coarse pitch and 4.5mm thread length. Shoulder dimensions include 4mm diameter (-0.03mm to 0mm tolerance) and 5mm length (0.07mm to 0.15mm tolerance). Manufactured to DIN 923 specifications, it is RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, ensuring adherence to environmental and safety regulations for global industrial use.