S-94128A107 M4 DIN 927 Shoulder Screws

Key Features & Benefits at a Glance

• Superior alignment and positioning with precise 5.5mm shoulder diameter and tight tolerances for reduced assembly play and improved component fit
• Exceptional durability and wear resistance thanks to alloy steel construction and Rockwell B75 hardness, ensuring long service life in demanding applications
• Reliable and secure fastening with Class 6g thread fit and M4 x 0.7mm coarse thread, providing excellent grip and vibration resistance
• Simplified installation and maintenance with a standard slotted drive, allowing for easy adjustment and removal with common tools
• Guaranteed dimensional consistency through full compliance with DIN 927 standard, ensuring interchangeability and repeatable performance
• Safe for sensitive environments as it is fully RoHS 3 and REACH compliant, meeting strict environmental and health regulations
• Optimized for automated assembly with headless, right-hand thread design, facilitating smooth feeding and high-speed installation processes

Professional Applications & Engineering Value

This M4 shoulder screw is engineered to solve critical alignment and pivot point challenges in industrial applications. The alloy steel construction, hardened to Rockwell B75, provides exceptional strength to withstand repetitive motion and high-stress conditions without deformation. The precise shoulder with its tight diameter and length tolerances acts as a reliable datum for locating parts like gears, bearings, and linkages, eliminating misalignment and reducing wear on surrounding components. Its metric coarse thread (M4 x 0.7mm) and Class 6g fit ensure a secure hold, resisting loosening under vibration, which is vital in machinery, automotive sub-assemblies, and precision instruments. The headless, slotted design offers a low-profile solution for confined spaces while maintaining serviceability.

Specification Summary & Compliance

This precision shoulder screw features an M4 thread with a 0.7mm pitch and a Class 6g thread fit per ISO metric standards. The shoulder has a diameter of 5.5mm with a tolerance of -0.03mm to 0mm and a length of 5mm with a tolerance of -0.48mm to 0mm, ensuring a precise shoulder fit. It is manufactured to conform to the DIN 927 specification and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations.