S-90318A810 M4 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh industrial environments and chemical exposure
• Exceptional mechanical strength with 70,000 psi tensile and 35,000 psi shear strength, ensuring reliable performance under high stress
• Precise alignment and location provided by the accurate 5mm shoulder diameter with tight tolerance, reducing assembly errors
• Secure and flush installation enabled by the ultra-low socket head and 2.5mm hex drive, saving space and preventing snagging
• Consistent thread engagement with Class 6g fit and coarse M4 x 0.7mm thread, facilitating quick assembly and disassembly
• Enhanced durability from Rockwell B70 hardness, resisting wear and deformation in repetitive use applications
• Compliance with environmental regulations including RoHS 3 and REACH, ensuring safe use in regulated industries

Professional Applications & Engineering Value

This M4 shoulder screw is engineered to address critical alignment and durability challenges in industrial applications. The 316 stainless steel material offers excellent resistance to corrosion and oxidation, making it suitable for machinery, automotive, and marine environments where moisture and chemicals are present. The precise shoulder diameter and length ensure accurate component positioning, reducing vibration and misalignment in assemblies. With its ultra-low socket head and right-hand coarse thread, it allows for compact designs and efficient installation using a standard 2.5mm hex key. This precision shoulder screw is ideal for jigs, fixtures, and rotating mechanisms, providing long-term reliability and reducing maintenance costs.

Specification Summary & Compliance

This metric shoulder screw features an M4 x 0.7mm coarse thread with Class 6g thread fit for standard metric tolerances. The shoulder diameter is 5mm with a tolerance of -0.025 to 0 mm, and shoulder length is 10mm with 0 to 0.05 mm tolerance, ensuring precise fit in demanding applications. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free of restricted hazardous substances and safe for industrial use.