S-90269A925 M20 ISO 7379 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance in harsh environments due to 316 Stainless Steel construction and protective Black Oxide finish
• Exceptional mechanical strength with a 70,000 psi tensile strength and 35,000 psi minimum shear strength for demanding, heavy-duty applications
• Precise component alignment and smooth rotation enabled by the 24mm shoulder diameter with tight tolerance control
• Enhanced grip and reduced tool slippage during installation thanks to the knurled socket head and 12mm hex drive
• Reliable and secure fastening ensured by the M20x2.5 coarse thread with a Class 5g6g fit for consistent performance
• Long-term durability and stability supported by a 70mm shoulder length and a Rockwell B79 hardness
• Global compliance and quality assurance guaranteed by meeting ISO 7379 specifications and being RoHS 3 & REACH compliant

Professional Applications & Engineering Value

This M20x2.5 shoulder screw is engineered to solve critical alignment and wear issues in high-performance assemblies. The 316 Stainless Steel material provides excellent resistance to chemicals and saltwater, making it ideal for marine, chemical processing, and food industry applications where corrosion resistance is paramount. The precision-machined 24mm shoulder acts as a built-in spacer or pivot, eliminating the need for additional bushings and reducing assembly complexity. The Black Oxide finish not only enhances corrosion protection but also minimizes galling. Combined with the knurled socket head for superior torque transmission, this ISO 7379 certified fastener ensures reliable performance in machinery, automotive jigs, and conveyor systems, reducing downtime and maintenance costs.

Specification Summary & Compliance

This metric shoulder screw features an M20x2.5 coarse thread with a Class 5g6g thread fit for standard tolerance applications. The shoulder is manufactured to a diameter of 24mm with a tolerance of -0.072 to -0.01 mm and a length of 70mm with a tolerance of 0 to 0.25 mm, ensuring precise dimensional control. The product is manufactured in compliance with the ISO 7379 standard and is confirmed to be RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, adhering to strict environmental and safety regulations.