S-90278A310 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 with a 55mm shoulder and tight tolerances for accurate positioning in assemblies
• High mechanical strength offering 70,000 psi tensile strength and Rockwell B55 hardness for reliable load-bearing performance
• Secure and flush installation enabled by the smooth, standard hex socket head for a clean, low-profile finish
• Easy assembly and disassembly with a coarse M5x0.8 thread and right-hand direction for efficient fastening
• Consistent thread quality with Class 6g fit ensuring reliable engagement and interchangeability
• Compliance with environmental regulations, being RoHS 3 and REACH compliant for safe use in regulated industries

Professional Applications & Engineering Value

This precision shoulder screw is engineered to solve critical alignment and durability challenges in mechanical systems. The 18-8 stainless steel material provides excellent resistance to rust and corrosion, making it suitable for demanding environments like automation, machinery, and outdoor equipment. The 55mm shoulder length with precise tolerances acts as a dependable pivot or spacer, ensuring components like gears, pulleys, and linkages maintain exact positioning without misalignment. The hex socket drive allows for high-torque installation in confined spaces, while the Class 6g metric thread with coarse pitch ensures quick, secure fastening. This combination of features reduces assembly time, minimizes wear, and enhances the longevity of your equipment, providing reliable performance in industrial applications where precision and strength are paramount.

Specification Summary & Compliance

This M5 shoulder screw features a metric coarse thread (M5x0.8) with Class 6g tolerance for consistent fit. The shoulder diameter is 6 mm with a tolerance of -0.025 to 0 mm, and the shoulder length is 55 mm with a tolerance of 0 to 0.05 mm, ensuring precise dimensional accuracy. Manufactured from 18-8 stainless steel, it meets industry standards for mechanical properties, including a tensile strength of 70,000 psi. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for global industrial use.