S-90278A252 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 component alignment thanks to the accurately machined shoulder with tight diameter and length tolerances, reducing assembly errors.
• High mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness, providing dependable load-bearing capacity.
• Secure and efficient installation using a standard 4mm hex socket drive, allowing for high torque application without slippage.
• Reliable thread engagement with Class 6g thread fit and coarse 1mm pitch, enabling quick assembly and vibration resistance.
• Environmental compliance assurance by meeting RoHS 3 and REACH standards, supporting sustainable and safe manufacturing practices.
• Smooth head design minimizes friction and damage to mating surfaces, preserving the integrity of assembled components.

Professional Applications & Engineering Value

This M6 shoulder screw is engineered to address critical alignment and durability challenges in precision assemblies. The 18-8 stainless steel material offers excellent resistance to rust and corrosion, making it ideal for applications in machinery, automation, and outdoor equipment where exposure to moisture or chemicals is common. The 45mm shoulder length and precise shoulder diameter provide a stable pivot or spacer, eliminating misalignment in rotating parts like gears, pulleys, and linkages. With a hex socket head and coarse thread spacing, it ensures fast, secure fastening even in high-vibration environments, reducing maintenance downtime. This screw is a trusted solution for industries requiring repeatable accuracy and long-term performance, from automotive to electronics manufacturing.

Specification Summary & Compliance

The screw features a Class 6g thread fit per metric standards, with shoulder diameter tolerance of -0.025 to 0 mm and shoulder length tolerance of 0 to 0.05 mm for high precision. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free of hazardous substances and suitable for global industrial use.