S-90323A479 M6 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ensuring long-term reliability in harsh industrial environments.
• Precise alignment and reduced wear due to the accurately machined shoulder with 8mm diameter and tight tolerance, minimizing component wobble.
• High strength and durability with Rockwell B95 hardness and 80,000 psi tensile strength, suitable for heavy-duty applications.
• Efficient installation and space-saving design featuring a low-profile socket head and 4mm hex drive for easy access in confined areas.
• Reliable thread engagement with Class 6g thread fit and M6x1mm coarse pitch, providing secure fastening and vibration resistance.
• Consistent performance ensured by passivated finish, which enhances corrosion protection without compromising dimensional integrity.
• Compliance with environmental standards including RoHS 3 and REACH, making it safe for use in regulated industries.

Professional Applications & Engineering Value

This M6 shoulder screw is engineered to address critical challenges in precision assembly, such as misalignment and component stress. The 18-8 stainless steel material offers excellent resistance to rust and chemicals, ideal for machinery, automotive, and electronics where exposure to moisture is common. The low profile socket head with a 4mm hex drive allows for compact designs and easy torque application, while the precise shoulder fit (8mm diameter, 18mm length) ensures accurate positioning of moving parts like bearings or pulleys, reducing wear and maintenance costs. Its Class 6g thread fit and coarse pitch provide robust fastening in high-vibration environments, enhancing the screw's reliability in industrial applications that demand maximum durability and performance.

Specification Summary & Compliance

This shoulder screw adheres to metric system standards with an M6x1mm coarse thread and Class 6g thread fit for precise tolerance. The shoulder diameter is 8mm with a tolerance of -0.025 to 0 mm, and shoulder length is 18mm with a tolerance of 0 to 0.05 mm, ensuring exacting precision shoulder fit. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious industrial use without hazardous substances.