S-90263A243 M4 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel material and passivated finish, ideal for harsh industrial environments and extended service life.
• Precise component alignment enabled by the smooth, accurate 16mm shoulder with tight tolerances, reducing assembly errors and improving machinery performance.
• High-strength fastening offering 70,000 psi tensile strength and Rockwell B79 hardness for reliable load-bearing in demanding applications.
• Easy installation and removal with a standard hex socket head and 2.5mm drive, allowing for efficient maintenance with common tools.
• Consistent thread engagement ensured by the Class 6g metric coarse thread (M4 x 0.7mm), providing secure, vibration-resistant connections.
• Compliance with global regulations including RoHS 3 and REACH, ensuring safety and environmental standards for international supply chains.
• Versatile industrial use due to its right-hand thread and precise shoulder fit, suitable for pivots, axles, and spacers in machinery and equipment.

Professional Applications & Engineering Value

This M4 shoulder screw is engineered to address critical challenges in industrial assembly, such as misalignment and corrosion-induced failure. Crafted from 316 stainless steel with a passivated finish, it resists harsh chemicals and moisture, prolonging component life in settings like marine equipment or chemical processing plants. The precise 16mm shoulder length and smooth texture ensure accurate positioning of moving parts, reducing wear and operational downtime. With a Class 6g thread fit and coarse 0.7mm pitch, it delivers quick, secure fastening that withstands vibrations, making it ideal for industrial applications requiring reliable, repeatable performance in machinery, automation systems, and precision instruments.

Specification Summary & Compliance

This shoulder screw adheres to metric standards with an M4 thread size, 0.7mm coarse pitch, and Class 6g thread fit for consistent accuracy. The shoulder diameter is 5 mm with a tolerance of -0.025 to 0 mm, and shoulder length is 16 mm with a 0 to 0.05 mm tolerance, ensuring precise assembly. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, confirming it is free of hazardous substances for safe industrial use.