S-90278A375 M4 Shoulder Screws

Key Features & Benefits at a Glance

• Enhanced Durability and Corrosion Resistance - Crafted from 18-8 Stainless Steel, this screw offers excellent resistance to rust and corrosion, ensuring long-term reliability in harsh industrial environments.
• Superior Tensile Strength for Demanding Applications - With a tensile strength of 70,000 psi, it provides a robust and secure fastening solution capable of withstanding high-stress conditions without failure.
• Precise Shoulder Fit for Accurate Alignment - The precisely machined shoulder with a diameter of 5mm and tight tolerances ensures exact component alignment, reducing wear and improving assembly accuracy.
• High Thread Quality for Secure Fastening - The Class 6g thread fit and M4 x 0.7mm coarse thread pitch guarantee consistent, reliable engagement and easy installation in various materials.
• Convenient Hex Drive for Efficient Installation - Featuring a 2.5mm hex socket drive, it allows for quick and straightforward assembly using standard tools, minimizing installation time and effort.
• Compliance with Environmental and Safety Standards - RoHS 3 and REACH compliant, this screw meets stringent regulatory requirements, making it a safe and responsible choice for global industrial use.
• Optimized Hardness for Wear Resistance - With a Rockwell B55 hardness, it maintains its structural integrity under repeated use, reducing the risk of stripping or deformation.

Professional Applications & Engineering Value

This M4 shoulder screw is engineered to address common challenges in precision assemblies, such as misalignment and component slippage. The 25mm shoulder length and precise shoulder diameter provide a stable pivot or spacer, ideal for applications in machinery, automotive systems, and electronic enclosures where exact positioning is critical. Made from 18-8 stainless steel, it resists corrosion from moisture and chemicals, extending service life in demanding environments. The Class 6g thread fit and coarse thread pitch ensure quick, secure fastening, reducing assembly errors and maintenance needs. Its hex drive style facilitates easy installation in tight spaces, enhancing efficiency for B2B users in manufacturing and maintenance sectors.

Specification Summary & Compliance

This shoulder screw features a Metric M4 x 0.7mm thread with a Class 6g tolerance for precise fit, and a shoulder diameter of 5mm with tolerances from -0.025 to 0 mm and shoulder length of 25mm with tolerances from 0 to 0.05 mm, ensuring high 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.