S-90318A930 M5 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh chemical and marine environments
• Precise component alignment ensured by the smooth, precisely toleranced shoulder with a diameter of 6 mm and length of 20 mm
• High-strength performance with a tensile strength of 70,000 psi and shear strength of 35,000 psi for demanding applications
• Reliable thread engagement with a Class 6g metric thread fit, providing consistent and secure fastening
• Low-profile, space-saving design featuring an ultra-low socket head for applications with limited clearance
• Easy installation and removal with a standard 3 mm hex drive, allowing for efficient assembly and maintenance
• Compliance with stringent regulations, being RoHS 3 and REACH compliant for use in regulated industries

Professional Applications & Engineering Value

This M5 shoulder screw is engineered to solve critical alignment and durability challenges in precision industrial applications. The 316 stainless steel material offers exceptional resistance to corrosion, making it suitable for environments exposed to moisture, chemicals, and salt spray. The precise shoulder with tight diameter and length tolerances acts as a pivot or axle, ensuring accurate location of parts like gears, bearings, and linkages without the need for additional bushings. The Class 6g thread fit and coarse M5x0.8 thread provide reliable fastening that resists loosening under vibration, while the socket head with a 3 mm hex drive allows for secure tool engagement in confined spaces. This design reduces assembly time, minimizes part count, and enhances the longevity of machinery in automation, medical devices, and optical equipment.

Specification Summary & Compliance

This metric shoulder screw features an M5x0.8 coarse thread with a Class 6g thread fit per ISO standards, ensuring dimensional accuracy. The shoulder has a diameter of 6 mm with a tolerance of -0.025 to 0 mm and a length of 20 mm with a tolerance of 0 to 0.05 mm for precise fit. Manufactured from 316 stainless steel with a hardness of Rockwell B70, it meets performance requirements for tensile and shear strength. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious and regulated industrial applications.