S-90269A920 M20 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 industrial environments
• Precise alignment and smooth rotation due to the 24mm shoulder diameter with tight tolerance (-0.072 to -0.01 mm) for reliable assembly fit
• High mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength to withstand heavy loads and stress
• Easy installation and removal with a 12 mm hex socket drive and knurled head for secure grip and tool engagement
• Accurate and durable threading with Class 5g6g fit and coarse 2.5 mm pitch for quick assembly and reduced cross-threading risk
• Long-lasting performance backed by Rockwell B79 hardness, ensuring wear resistance and durability in demanding applications
• Global compliance and safety meeting ISO 7379 standards, RoHS 3, and REACH regulations for reliable, eco-friendly use

Professional Applications & Engineering Value

This M20 shoulder screw is engineered to address critical challenges in industrial machinery, automation, and precision equipment. The 316 Stainless Steel material, combined with a Black Oxide finish, provides exceptional resistance to corrosion and chemicals, making it suitable for outdoor, marine, or chemical processing environments. The 150mm shoulder length with minimal tolerance ensures precise component spacing and alignment, reducing vibration and wear in rotating assemblies like bearings, pulleys, and linkages. The hex socket drive and knurled head facilitate easy installation in tight spaces, while the coarse thread spacing and Class 5g6g thread fit enable quick, secure fastening without compromising strength. Ideal for industrial fasteners in high-stress applications, this shoulder screw enhances assembly reliability and longevity, minimizing maintenance downtime.

Specification Summary & Compliance

This shoulder screw features a metric thread with M20x2.5 dimensions and Class 5g6g thread fit for precise tolerance. The shoulder diameter is 24 mm with a tolerance of -0.072 to -0.01 mm, and shoulder length is 150 mm with a tolerance of 0 to 0.25 mm, ensuring accurate fit in assemblies. It complies with ISO 7379 standards for dimensional consistency and performance. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, adhering to environmental and safety regulations for industrial use.