S-98621A155 M8 Shoulder Screws

Key Features & Benefits at a Glance

• Enhanced Durability and Corrosion Resistance: Made from 18-8 stainless steel with a TiCN coating, this shoulder screw offers superior wear and corrosion resistance, extending service life in harsh industrial environments.
• Precise Alignment and Reduced Wear: The precisely machined 10mm shoulder diameter with a tight tolerance ensures accurate component location, minimizing misalignment and part wear in assemblies.
• High Tensile Strength for Demanding Applications: With a tensile strength of 70,000 psi and Rockwell B55 hardness, it reliably handles high-stress conditions without failure.
• Secure and Reliable Thread Engagement: The Class 6g thread fit for the M8x1.25mm coarse thread provides consistent, secure fastening, reducing the risk of loosening under vibration.
• Easy Installation with Standard Hex Drive: The 5mm hex socket head allows for quick and straightforward installation using common tools, improving assembly efficiency.
• Compliance with Environmental and Safety Standards: RoHS 3 and REACH compliance ensures the screw meets strict regulatory requirements for hazardous substances, supporting sustainable and safe manufacturing practices.
• Optimized for High-Performance Machinery: The combination of a 16mm shoulder length and smooth head profile facilitates stable rotational movement and reduces friction in precision mechanisms.

Professional Applications & Engineering Value

This M8 shoulder screw is engineered to address critical challenges in precision machinery and industrial equipment. The 18-8 stainless steel construction provides excellent corrosion resistance, ideal for environments exposed to moisture or chemicals, while the TiCN coating significantly enhances surface hardness and reduces wear in high-friction applications like rotating assemblies and pivoting joints. The Class 6g thread fit and coarse 1.25mm pitch ensure reliable fastening in dynamic settings, preventing thread stripping under load. With a precise 10mm shoulder diameter and 16mm shoulder length, it offers stable axial support for components such as gears, pulleys, and bearings, minimizing play and vibration. This makes it a top choice for industrial automation, robotics, and automotive systems where precision shoulder screws are essential for maintaining alignment and longevity under strenuous operational conditions.

Specification Summary & Compliance

This metric shoulder screw features an M8x1.25mm coarse thread with a Class 6g thread fit for standard tolerance. The shoulder diameter is 10mm with a tolerance of -0.025 to 0 mm, and the shoulder length is 16mm with a tolerance of 0 to 0.05 mm, ensuring precise assembly. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to environmental and safety standards for hazardous substances.