S-97505A113 M4 DIN 923 Shoulder Screws

Key Features & Benefits at a Glance

• Enhanced Durability & Corrosion Resistance – Zinc plating provides reliable protection against rust and environmental degradation in demanding industrial settings.
• Precision Shoulder Alignment – The 8mm shoulder with controlled tolerances ensures accurate component positioning and reduces assembly misalignment.
• High Tensile Strength – Alloy steel construction and 58,000 psi tensile strength deliver robust performance under mechanical stress.
• Secure Fastening with Coarse Thread – M4 x 0.7mm coarse pitch threads enable quick installation and strong holding power in various materials.
• Low-Profile Socket Head Design – The smooth, low socket head allows for compact assemblies and easy access with standard tools.
• Consistent Thread Fit – Class 6g thread fit ensures reliable engagement and interchangeability in metric applications.
• Compliance with International Standards – DIN 923 certification guarantees dimensional accuracy, while RoHS 3 and REACH compliance supports environmental and safety regulations.

Professional Applications & Engineering Value

This M4 shoulder screw is engineered to address critical alignment and load-bearing challenges in industrial applications. The alloy steel core, hardened to Rockwell B71, provides exceptional resistance to wear and deformation, while the zinc plating significantly extends service life by preventing corrosion in humid or chemically aggressive environments. The precision-machined 8mm shoulder acts as a reliable pivot or spacer, maintaining exact part positioning in assemblies such as rotating machinery, automation systems, and precision instruments. With its coarse metric thread and socket head drive, it ensures rapid, secure fastening even in high-vibration settings, reducing maintenance downtime and improving overall equipment reliability.

Specification Summary & Compliance

This shoulder screw features an M4 x 0.7mm coarse metric thread with Class 6g fit, ensuring precise thread engagement. The shoulder diameter is 5.5mm with a tolerance of -0.03mm to 0mm, and the shoulder length is 8mm with a tolerance of +0.07mm to +0.15mm for consistent assembly. Manufactured in accordance with DIN 923 specifications, it complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for use in regulated and environmentally conscious industries.