S-90269A232 M4 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 Stainless Steel construction, ideal for harsh environments and chemical exposure.
• Enhanced torque transmission and anti-slip grip from the knurled socket head and 2.5mm hex drive, ensuring secure fastening.
• Precise component alignment and spacing with a 50mm shoulder length and 5mm diameter, reducing assembly errors.
• High mechanical strength and durability offering 70,000 psi tensile strength and Rockwell B79 hardness for demanding applications.
• Reliable thread engagement and interchangeability due to Class 5g6g thread fit and standard metric (M4 x 0.7mm) coarse threading.
• Compliance with stringent environmental regulations including RoHS 3 and REACH, ensuring safe and sustainable use.
• Consistent dimensional accuracy with tight shoulder diameter and length tolerances for repeatable performance.

Professional Applications & Engineering Value

This M4 shoulder screw is engineered to address critical alignment and mounting challenges in precision assemblies. The 316 Stainless Steel material provides exceptional resistance to corrosion and oxidation, making it suitable for marine, chemical processing, and food industry equipment where moisture and aggressive substances are present. The 50mm shoulder length acts as a precise pivot or spacer, eliminating the need for additional bushings and reducing part count in machinery linkages, rotating shafts, and electronic enclosures. Combined with the Class 5g6g thread fit and coarse 0.7mm pitch, it ensures quick assembly and reliable holding power under vibration. The knurled socket head with a 2.5mm hex drive enhances grip for high-torque applications, preventing tool slippage and damage in confined spaces. This screw delivers long-term reliability and simplifies maintenance in automated systems and precision instruments.

Specification Summary & Compliance

This shoulder screw features a Class 5g6g thread fit per ISO metric standards, ensuring dimensional precision and interchangeability. The shoulder diameter is manufactured to a tight tolerance of -0.072 to -0.01 mm, and the shoulder length tolerance is 0 to 0.25 mm for consistent performance. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free of hazardous substances and safe for industrial use. The mechanical properties, including a tensile strength of 70,000 psi and minimum shear strength of 35,000 psi, adhere to industry standards for high-strength fasteners.