S-90269A839 M12 ISO 7379 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh industrial environments and chemical exposure.
• Enhanced durability and wear resistance from the black oxide finish, providing added protection against rust and galling.
• High-strength performance with 70,000 psi tensile strength and 35,000 psi minimum shear strength for reliable, heavy-duty fastening.
• Precise alignment and smooth rotation thanks to the 20mm shoulder with tight diameter tolerance, reducing component wear.
• Secure, non-slip installation using the 8mm hex drive and knurled head for improved grip during tightening.
• Accurate and reliable thread engagement with Class 5g6g thread fit and coarse 1.75mm pitch for quick assembly in high-vibration applications.
• Compliance with international standards including ISO 7379, RoHS 3, and REACH, ensuring safety and environmental responsibility.

Professional Applications & Engineering Value

This M12 shoulder screw is engineered to address common challenges in industrial applications where precision, strength, and corrosion resistance are critical. The 316 stainless steel material offers excellent resistance to chemicals and moisture, making it suitable for machinery, marine equipment, and food processing systems. The black oxide finish enhances surface durability, reducing friction and preventing seizing in high-stress environments. With a 20mm shoulder length and precise diameter tolerance, it ensures accurate component spacing and smooth rotational movement, minimizing misalignment and wear in assemblies like bearings, pulleys, and linkages. The coarse thread pitch and hex drive design facilitate quick installation and removal, improving maintenance efficiency in automated systems and heavy-duty equipment.

Specification Summary & Compliance

This shoulder screw features M12 x 1.75mm coarse threads with Class 5g6g thread fit for precise dimensional accuracy. The shoulder diameter is 16 mm with a tolerance of -0.072 to -0.01 mm, and the shoulder length is 20 mm with a tolerance of 0 to 0.25 mm, ensuring consistent performance. It meets ISO 7379 manufacturing specifications and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, supporting safe and sustainable industrial use.