S-90278A404 M5 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Precise component alignment ensured by the 6mm shoulder with tight diameter tolerance for reduced wobble
• High-strength performance delivering 70,000 psi tensile strength and Rockwell B55 hardness for reliable load-bearing
• Secure, tamper-resistant installation via the 3mm hex socket drive, allowing high torque application in confined spaces
• Consistent threading accuracy with Class 6g metric coarse thread (M5x0.8) for easy assembly and vibration resistance
• Environmental regulation compliance meeting RoHS 3 and REACH standards for safe use in regulated industries
• Smooth, low-profile head design with 10mm diameter for flush mounting and minimal protrusion

Professional Applications & Engineering Value

This M5 shoulder screw is engineered to solve critical alignment and durability challenges in precision assemblies. The 18-8 stainless steel material provides excellent corrosion resistance, making it suitable for machinery, automation systems, and outdoor equipment exposed to moisture or chemicals. The 6mm shoulder length with precise diameter control acts as a pivot or spacer, eliminating the need for additional bushings and reducing assembly time. The hex socket head allows for high-torque installation in tight spaces, while the Class 6g metric coarse thread ensures quick engagement and maintains clamp load under vibration. Ideal for securing rotating parts, guiding linear motion components, or positioning fixtures where repeatable accuracy is essential.

Specification Summary & Compliance

This shoulder screw features an M5x0.8 metric coarse thread with Class 6g tolerance for consistent fit. The shoulder diameter is manufactured to a tight tolerance of -0.025 to 0 mm, and the shoulder length tolerance is controlled between 0 to 0.05 mm for precise assembly. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free of restricted hazardous substances. Manufactured to industrial standards for socket head shoulder screws, it guarantees reliable performance in demanding applications.