S-98621A144 M5 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from 18-8 stainless steel construction, ensuring long-term reliability in harsh industrial environments.
• Exceptional wear resistance and reduced friction due to the TiCN coating, extending service life in high-movement applications.
• Precise component alignment and pivot points enabled by the 25mm shoulder with a tight length tolerance (0 to 0.05mm) and precise shoulder fit.
• High mechanical strength with a tensile strength of 70,000 psi and Rockwell B55 hardness, providing dependable load-bearing capacity.
• Reliable and secure fastening with a Class 6g thread fit and coarse thread pitch (M5 x 0.8mm) for quick assembly and vibration resistance.
• Easy installation and removal using a standard 3 mm hex drive, allowing for efficient maintenance and assembly in confined spaces.
• Compliance with major environmental regulations including RoHS 3 and REACH, ensuring safety and suitability for global markets.

Professional Applications & Engineering Value

This M5 shoulder screw is engineered to solve critical alignment and durability challenges in industrial applications. The 18-8 stainless steel core provides excellent resistance to corrosion and oxidation, making it ideal for machinery exposed to moisture or chemicals. The TiCN coating significantly enhances surface hardness and reduces galling, which is vital for components subject to repetitive motion or high wear, such as in precision assemblies, pivoting mechanisms, and jigs. The 25mm shoulder length with minimal tolerance ensures exact positioning of parts, eliminating misalignment and reducing stress on the threaded section. This design is particularly valuable in automation equipment, where reliable fastening and repeatable accuracy are paramount for operational efficiency and reduced downtime.

Specification Summary & Compliance

This precision shoulder screw features an M5 x 0.8mm coarse thread with a Class 6g thread fit for standard metric applications. The shoulder diameter is 6 mm with a tolerance of -0.025 to 0 mm, and the shoulder length is 25 mm with a tolerance of 0 to 0.05 mm, ensuring a precise fit. Manufactured from 18-8 stainless steel with a TiCN coating, it meets a tensile strength of 70,000 psi and Rockwell B55 hardness. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, affirming its adherence to strict environmental and safety standards for industrial use.