S-90263A132 M3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel and passivated finish, ideal for harsh industrial environments.
• Precise alignment and reduced wear due to the 4mm shoulder diameter with tight tolerance (-0.025 to 0 mm) for stable component positioning.
• High tensile strength of 70,000 psi ensures reliable performance under heavy mechanical loads.
• Easy installation and removal with a standard hex socket head and 2 mm drive size for efficient assembly.
• Accurate thread engagement with Class 6g fit and M3x0.5mm coarse pitch, minimizing cross-threading risks.
• Durable construction featuring Rockwell B79 hardness for long-term wear resistance in repetitive applications.
• Compliance with environmental standards including RoHS 3 and REACH, ensuring safe and sustainable use.

Professional Applications & Engineering Value

This M3 shoulder screw is engineered to address critical alignment and durability challenges in precision assemblies. Made from 316 stainless steel with a passivated finish, it resists corrosion in demanding settings like marine, chemical processing, and food machinery. The 4mm shoulder diameter with minimal tolerance ensures exact part location, reducing vibration and misalignment in rotating components such as gears and pulleys. With a coarse thread pitch of 0.5mm and Class 6g thread fit, it offers quick, secure fastening in high-vibration environments, while the 30mm shoulder length provides ample support for spacers or bearings. Ideal for automation, electronics, and medical devices, this screw enhances assembly reliability and longevity.

Specification Summary & Compliance

This shoulder screw adheres to metric thread standards with M3 size, 0.5mm pitch, and Class 6g thread fit for precise tolerance. The shoulder diameter tolerance is -0.025 to 0 mm, and shoulder length tolerance is 0 to 0.05 mm, ensuring consistent performance. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, supporting environmental and safety regulations in industrial applications.