S-90265A139 M5 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and extended service life.
• Precise alignment and pivot function provided by the 6mm shoulder diameter, reducing wear on connected components.
• High-strength performance with 70,000 psi tensile strength and Rockwell B55 hardness for reliable load-bearing in demanding applications.
• Secure and flush installation enabled by the smooth socket head and standard hex drive, preventing tool slippage and offering a clean finish.
• Consistent and reliable threading with Class 5g6g fit and coarse 0.8mm pitch for easier assembly and vibration resistance.
• Environmental and regulatory compliance meeting RoHS 3 and REACH standards, ensuring safety for various industrial uses.
• Optimized for automated assembly due to precise shoulder length and diameter tolerances, enhancing production efficiency.

Professional Applications & Engineering Value

This M5 shoulder screw is engineered to address critical alignment and durability challenges in precision machinery, automation systems, and fixturing applications. The 18-8 stainless steel material offers excellent corrosion resistance, which is vital for operations in moist or chemically aggressive environments, reducing maintenance frequency and downtime. The 6mm shoulder diameter and 8mm shoulder length provide a stable bearing surface, minimizing misalignment and wear on moving parts like gears and linkages. With a coarse thread pitch of 0.8mm and Class 5g6g thread fit, it ensures quick, secure fastening that resists loosening under vibration, making it ideal for high-stress industrial assemblies. The socket head design with a hex drive allows for compact installation in tight spaces, enhancing design flexibility and reliability in B2B technical procurement scenarios.

Specification Summary & Compliance

This metric shoulder screw adheres to precise dimensional standards, including a shoulder diameter tolerance of -0.072 to -0.01 mm and shoulder length tolerance of 0 to 0.25 mm, ensuring consistent Class 5g6g thread fit for reliable performance. Manufactured from 18-8 stainless steel with a tensile strength of 70,000 psi and minimum shear strength of 35,000 psi, it meets industry requirements for durability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and suitability for global industrial applications.