S-90269A218 M4 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance in harsh environments thanks to 316 Stainless Steel construction, ideal for chemical, marine, and outdoor applications.
• Exceptional mechanical strength with 70,000 PSI tensile and 35,000 PSI minimum shear strength, ensuring reliable performance under high stress.
• Precise alignment and smooth rotation enabled by the 5mm diameter shoulder with controlled tolerance, reducing wear on mating parts.
• Secure, non-slip fastening with the knurled hex socket head and 2.5mm drive, allowing for high torque application and easy assembly.
• Wide compatibility and easy installation with a standard M4 x 0.7mm coarse Class 5g6g right-hand thread, conforming to common metric standards.
• Enhanced durability and hardness with a Rockwell B79 rating, providing excellent resistance to deformation and galling.
• Compliance with strict environmental regulations including RoHS 3 and REACH, ensuring safety and sustainability for global markets.

Professional Applications & Engineering Value

This M4 shoulder screw is engineered to address critical challenges in precision assemblies, such as maintaining exact pivot points and reducing friction in rotating components. The 316 Stainless Steel material offers outstanding resistance to corrosion from chemicals, saltwater, and extreme temperatures, making it a top choice for marine equipment, chemical processing machinery, and food-grade applications. The hex socket head with knurling ensures a firm grip during installation, preventing tool slippage and damage in high-torque scenarios. Combined with the Class 5g6g thread fit and precisely machined shoulder, this screw provides reliable alignment for gears, bearings, and linkages, minimizing play and extending the service life of mechanical systems in demanding industrial environments.

Specification Summary & Compliance

This shoulder screw features an M4 x 0.7mm coarse metric thread with a Class 5g6g thread fit for standard tolerance applications. The shoulder diameter is 5 mm with a tolerance of -0.072 to -0.01 mm, and the shoulder length is 7 mm with a tolerance of 0 to 0.25 mm, ensuring high dimensional accuracy. Manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, it meets stringent environmental and safety standards for industrial use.