S-91273A379 M4 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and long-term reliability.
• High-strength performance offering 70,000 psi tensile strength and 35,000 psi minimum shear strength for demanding mechanical loads.
• Precise component alignment enabled by the 60mm shoulder with standard fit, ensuring accurate positioning in assemblies.
• Secure and efficient installation using the 2mm hex socket drive and knurled head for enhanced grip and reduced tool slippage.
• Reliable thread engagement with Class 5g6g metric coarse threads (M4 x 0.7mm) for consistent fastening and vibration resistance.
• Environmental and regulatory compliance meeting RoHS 3 and REACH standards for safe use in various industrial sectors.
• Durable material hardness rated at Rockwell B55, providing excellent wear resistance and extended service life.

Professional Applications & Engineering Value

This M4 shoulder screw is engineered to address critical alignment and durability challenges in precision industrial applications. The 18-8 stainless steel material ensures outstanding corrosion resistance, making it suitable for machinery, automotive, and electronic assemblies exposed to moisture or chemicals. The 60mm shoulder length with tight tolerances allows for exact component positioning, reducing wear and misalignment. Combined with a hex socket drive and knurled head texture, it facilitates quick, secure installation in confined spaces, minimizing assembly time and improving operational efficiency. Its high tensile and shear strength supports heavy-duty use, while the Class 5g6g thread fit ensures reliable performance in vibrating environments, offering a robust solution for engineers seeking longevity and precision.

Specification Summary & Compliance

This shoulder screw features a metric M4 x 0.7mm coarse thread with Class 5g6g thread fit for precise tolerance. The shoulder diameter is 4 mm with a tolerance of -0.04 to -0.01 mm, and the shoulder length is 60 mm with a tolerance of 0 to 0.25 mm, ensuring accurate dimensional control. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, affirming its safety and environmental standards for global industrial use.