S-90269A521 M4 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh environments and extended service life.
• Exceptional mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength for reliable performance under high-stress conditions.
• Precise shoulder alignment with a 35mm shoulder length and controlled tolerances, ensuring accurate component positioning and reduced assembly wear.
• Secure and flush installation enabled by the hex socket drive and knurled head, providing superior torque transmission and preventing tool slippage.
• Durable black oxide finish enhances surface protection and provides a sleek, low-reflectivity appearance for professional applications.
• Guaranteed thread accuracy with Class 5g6g metric coarse threads, ensuring consistent fit and easy assembly in demanding industrial settings.
• Compliance with major regulations including RoHS 3 and REACH, making it suitable for global supply chains and sensitive applications.

Professional Applications & Engineering Value

This M4 shoulder screw is engineered to address critical alignment and durability challenges in precision assemblies. The 316 stainless steel material provides excellent resistance to chemicals and moisture, preventing failure in corrosive industrial environments. The 35mm shoulder length acts as a precise pivot or spacer, minimizing misalignment and wear in machinery, robotics, and electronic enclosures. Combined with the black oxide finish, it offers added protection against galling and oxidation. The hex socket drive and knurled head ensure secure fastening in confined spaces, reducing installation time and improving operational reliability for high-tensile applications.

Specification Summary & Compliance

This shoulder screw conforms to metric coarse thread standards (M4x0.7) with a Class 5g6g thread fit for precise engagement. The shoulder diameter tolerance is -0.072 to -0.01 mm, and shoulder length tolerance is 0 to 0.25 mm, ensuring consistent dimensional accuracy. It is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, guaranteeing it is free from hazardous substances for safe use in various industrial sectors.