S-90269A746 M8 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh environments and extended service life.
• Precise component alignment and pivot points ensured by the 55mm shoulder with controlled diameter tolerance.
• High-strength performance with 70,000 psi tensile strength and 35,000 psi shear strength for demanding mechanical applications.
• Secure and flush installation using the 6mm hex socket drive, preventing cam-out and allowing for a clean profile.
• Enhanced grip during manual adjustment provided by the knurled head texture.
• Reliable thread engagement with a Class 5g6g thread fit for consistent assembly quality.
• Compliance with major environmental regulations including RoHS 3 and REACH, ensuring material safety and global acceptability.

Professional Applications & Engineering Value

This M8 shoulder screw is engineered to solve critical alignment and durability challenges in industrial assemblies. The 316 stainless steel material offers exceptional resistance to chemicals and saltwater, making it perfect for marine, chemical processing, and food machinery applications where corrosion is a primary concern. The precision-machined 55mm shoulder length acts as a reliable axle or spacer, maintaining exact distances between components and reducing wear. Combined with the hex socket drive and coarse M8x1.25 thread, it ensures fast, secure installation in high-vibration environments. This design directly addresses the need for long-lasting, maintenance-free fastening in precision equipment, automation systems, and rotating assemblies.

Specification Summary & Compliance

This metric shoulder screw features an M8x1.25 coarse thread with a Class 5g6g thread fit for standard industrial applications. The shoulder diameter is held to a tight tolerance of -0.072 to -0.01 mm, and the shoulder length tolerance is 0 to 0.25 mm, ensuring high dimensional accuracy. The fastener is manufactured to a Rockwell B79 hardness and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance standards, confirming it is free from hazardous substances.