S-90278A306 M5 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and reducing replacement frequency.
• Precise component alignment ensured by the 6mm shoulder diameter with tight tolerance (-0.025 to 0 mm), minimizing play and vibration in assemblies.
• High mechanical strength offering 70,000 psi tensile strength and Rockwell B55 hardness for reliable performance under heavy loads.
• Secure and efficient installation using a 3mm hex drive in a smooth socket head, preventing cam-out and enabling high torque application.
• Accurate and durable threading with Class 6g fit and coarse M5x0.8mm pitch, ensuring easy assembly and long-term thread integrity.
• Consistent dimensional stability from the precisely machined 35mm shoulder length, providing repeatable positioning in automated systems.
• Compliance with environmental regulations including RoHS 3 and REACH, supporting sustainable and safe manufacturing practices.

Professional Applications & Engineering Value

This M5 shoulder screw is engineered to address critical alignment and durability challenges in industrial applications. The 18-8 stainless steel material provides excellent resistance to corrosion and oxidation, making it suitable for machinery exposed to moisture or chemicals. The precise shoulder fit and Class 6g thread ensure minimal radial movement, which is vital in precision assemblies like rotating shafts, bearings, and linkages. The coarse thread pitch and hex drive facilitate quick installation and removal, reducing maintenance downtime. With its high tensile strength and Rockwell B55 hardness, this screw maintains integrity under dynamic loads, offering long-term reliability in automotive, aerospace, and manufacturing equipment.

Specification Summary & Compliance

This shoulder screw features a Metric M5x0.8mm coarse thread with Class 6g thread fit for standard tolerance. The shoulder diameter is 6 mm with a tolerance of -0.025 to 0 mm, and the shoulder length is 35 mm with a tolerance of 0 to 0.05 mm, ensuring high dimensional accuracy. Manufactured in accordance with common industrial standards for socket head shoulder screws, it complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious and safe industrial use.