S-90269A891 M16 ISO 7379 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 Stainless Steel construction and black oxide finish, ideal for harsh environments and extended service life.
• Exceptional mechanical strength offering 70,000 psi tensile strength and 35,000 psi shear strength for reliable performance in high-stress applications.
• Precision alignment and smooth rotation enabled by the 20mm diameter shoulder with controlled tolerances, reducing wear on mating parts.
• Secure and non-slip installation provided by the knurled head and 10mm hex drive, ensuring a firm grip during tightening.
• Guaranteed dimensional interchangeability with Class 5g6g thread fit and compliance with ISO 7379, ensuring consistent quality and fit.
• Enhanced assembly reliability through a robust Rockwell B79 hardness, resisting deformation under load.
• Safe for regulated industries with full compliance to RoHS 3 and REACH environmental directives.

Professional Applications & Engineering Value

This M16 shoulder screw is engineered to address critical challenges in precision assembly and motion control systems. The 316 Stainless Steel material provides excellent resistance to chemicals and oxidation, making it suitable for marine, chemical processing, and food-grade equipment. The black oxide finish adds an extra layer of protection while reducing light reflection. The precision-ground shoulder acts as a pivot, bearing surface, or locator, minimizing backlash and misalignment in pulleys, gears, and linkages. Its coarse M16x2mm thread with Class 5g6g fit ensures quick assembly and high vibration resistance, which is vital for heavy-duty machinery, automotive jigs, and conveyor systems. By integrating a knurled head and hex drive, the screw offers superior torque transmission and handling efficiency, reducing installation time and improving operational safety in automated production lines.

Specification Summary & Compliance

This shoulder screw adheres to strict dimensional and performance criteria. The thread is Metric M16x2mm coarse pitch with a Class 5g6g tolerance for a secure fit. The shoulder diameter is 20 mm with a tolerance of -0.072 to -0.01 mm, and the shoulder length is 25 mm with a 0 to 0.25 mm tolerance, ensuring precise location and smooth rotation. Manufacturing and material specifications conform to ISO 7379. The product is verified to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting international environmental and safety standards for hazardous substances.