S-90265A134 M4 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and long-term reliability.
• Precise shoulder alignment with a 25mm shoulder length and tight diameter tolerance, ensuring accurate component positioning and reduced assembly play.
• High mechanical strength offering 70,000 psi tensile strength and 35,000 psi shear strength for dependable performance under load.
• Easy installation and removal thanks to the hex socket drive and knurled head texture, providing excellent grip and torque application.
• Reliable thread engagement with Class 5g6g metric coarse threads (M4 x 0.7mm), facilitating quick assembly and vibration resistance.
• Consistent hardness and durability with Rockwell B55 rating, maintaining structural integrity through repeated use.
• Compliance with environmental standards, meeting RoHS 3 and REACH regulations for safe and sustainable use in global markets.

Professional Applications & Engineering Value

This M4 shoulder screw is engineered to address critical alignment and durability challenges in industrial assemblies. The 18-8 stainless steel material provides excellent resistance to rust and corrosion, making it suitable for applications in machinery, automotive, and electronics where exposure to moisture or chemicals is common. The 25mm shoulder length and precise diameter tolerance ensure components are securely positioned, reducing wear and misalignment. With a hex socket drive and knurled head, it allows for efficient installation in tight spaces, while the metric coarse thread (M4 x 0.7mm) ensures quick, secure fastening that resists loosening under vibration. Ideal for use in precision shoulder bolt applications, this screw enhances assembly accuracy and longevity in demanding environments.

Specification Summary & Compliance

This shoulder screw features a metric system with an M4 thread size, 0.7mm coarse pitch, and Class 5g6g thread fit for standard tolerance. The shoulder diameter is 5 mm with a tolerance of -0.072 to -0.01 mm, and the shoulder length is 25 mm with a tolerance of 0 to 0.25 mm, ensuring precise dimensional accuracy. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to environmental and safety standards for industrial fasteners.