S-90265A328 M8 ISO 7379 Shoulder Screws

Key Features & Benefits at a Glance

• Superior Corrosion Resistance: Manufactured from 18-8 Stainless Steel to ensure long-term reliability and performance in harsh or wash-down environments.
• High Mechanical Strength: Offers a robust 70,000 psi tensile strength and 45,000 psi minimum shear strength for dependable performance in heavy-duty applications.
• Precision Alignment & Pivot Function: Features a 12mm shoulder diameter with tight tolerances for accurate component location, reducing wear and simplifying assembly.
• Secure & Efficient Drive System: The 6mm hex socket drive combined with a knurled head provides excellent torque transmission and grip, even with gloved hands.
• Reliable Thread Engagement: Class 5g6g thread fit on the M8x1.25 coarse thread ensures consistent and secure fastening with common tolerances.
• Enhanced Durability & Hardness: A Rockwell B83 hardness rating provides excellent resistance to wear and deformation under load.
• Global Compliance & Quality Assurance: Conforms to ISO 7379 and meets critical RoHS 3 and REACH environmental regulations for safe and unrestricted use.

Professional Applications & Engineering Value

This M8 shoulder screw is engineered to solve critical alignment and pivot challenges in industrial machinery. The precision-machined 12mm shoulder acts as a built-in dowel, ensuring components like gears, pulleys, and linkages are perfectly located, which eliminates slop and reduces eccentric wear. The 18-8 Stainless Steel construction provides essential corrosion resistance for demanding environments, including food processing, packaging, and outdoor equipment. The combination of a hex socket drive and knurled head texture allows for high-torque installation in confined spaces while preventing tool slippage. With its high tensile and shear strength, this precision shoulder bolt is a reliable choice for applications where joint integrity is non-negotiable.

Specification Summary & Compliance

This shoulder screw features an M8x1.25 coarse thread with a Class 5g6g thread fit per standard metric practice. The shoulder diameter tolerance is -0.072 to -0.01 mm and the shoulder length tolerance is 0 to 0.25 mm, ensuring precise dimensional control. The product is manufactured in accordance with ISO 7379 and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards.