S-90265A222 M4 ISO 7379 Shoulder Screws

Key Features & Benefits at a Glance

• Precise Alignment & Reduced Wear: The 19mm shoulder length with tight diameter tolerance ensures accurate component positioning, minimizing misalignment and extending part life in assemblies.
• High Corrosion Resistance: Made from 18-8 Stainless Steel, this screw offers excellent durability in harsh environments, reducing maintenance needs and replacement costs.
• Superior Mechanical Strength: With a 70,000 psi tensile strength and Rockwell B83 hardness, it reliably handles high-stress applications without failure.
• Secure & Efficient Fastening: The Class 5g6g thread fit and coarse M4x0.7 pitch provide quick assembly and strong, vibration-resistant connections.
• Easy Installation with Standard Tools: The hex socket head and 3mm drive allow for straightforward installation using common Allen keys, speeding up production processes.
• Guaranteed Reliability & Compliance: Meets ISO 7379 specifications and is RoHS 3 & REACH compliant, ensuring product safety and environmental responsibility for global supply chains.
• Optimal for Rotational Movement: The smooth, standard shoulder profile supports smooth bearing surfaces and pivoting actions in machinery.

Professional Applications & Engineering Value

This M4 shoulder screw is engineered to address critical challenges in precision assembly and motion control systems. The 18-8 Stainless Steel construction provides inherent corrosion resistance, ideal for applications exposed to moisture or chemicals, while the Rockwell B83 hardness ensures the shoulder maintains its dimensional integrity under repetitive loads. The 19mm shoulder length with controlled tolerances acts as a precise axle or pivot point, eliminating the need for additional bushings in machinery like conveyor systems, robotic arms, and printing equipment. Its hex socket head design allows for compact installation in confined spaces, and the coarse metric thread ensures rapid, secure fastening even in high-vibration environments. By integrating these features, this screw reduces assembly time, enhances alignment accuracy, and supports reliable rotational movement in industrial automation and precision engineering projects.

Specification Summary & Compliance

This shoulder screw features a Class 5g6g thread fit per ISO metric standards, ensuring precise thread engagement. The shoulder diameter tolerance is -0.072 to -0.01 mm, and shoulder length tolerance is 0 to 0.25 mm, providing high dimensional accuracy for alignment-critical applications. It is manufactured in compliance with ISO 7379 and meets environmental regulations including RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), confirming its suitability for use in regulated industries worldwide.