S-90605A165 M6 x 20 mm DIN 912, ISO 4762 Left-Hand Threaded Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional strength and durability with Class 12.9 rating and 170,000 PSI tensile strength, ideal for high-stress industrial applications.
• Superior corrosion resistance thanks to the black-oxide coating on alloy steel, extending service life in harsh environments.
• Precise left-hand threading (M6x1mm coarse) ensures secure fastening in specialized assemblies where reverse threading is required.
• High hardness (Rockwell C37) provides excellent wear resistance and reduces the risk of stripping or deformation during installation.
• Standard 5mm hex drive socket head allows for easy installation and high torque application with common tools, minimizing slippage.
• Full threading and Class 5g6g thread fit offer consistent engagement and reliable load distribution along the entire 20mm length.
• Compliance with DIN 912/ISO 4762, RoHS 3, and REACH guarantees international quality, safety, and environmental standards are met.

Professional Applications & Engineering Value

This M6 left-hand thread socket head cap screw is engineered to address critical challenges in high-performance machinery and equipment. The black-oxide alloy steel construction provides robust corrosion resistance, making it suitable for environments exposed to moisture, chemicals, or varying temperatures. Its Class 12.9 strength and Rockwell C37 hardness ensure it can withstand extreme tensile and shear forces without failing, which is vital in automotive, aerospace, and heavy machinery applications. The left-hand metric thread is specifically designed for assemblies where standard right-hand threads could loosen due to rotational forces, offering enhanced safety and reliability. With a 5mm hex drive and precise coarse threading, it allows for quick, secure installation in tight spaces, reducing assembly time and improving overall efficiency in industrial settings.

Specification Summary & Compliance

This screw features an M6x1mm coarse left-hand thread with a Class 5g6g thread fit per ISO standards, ensuring dimensional accuracy and reliable performance. It is manufactured in compliance with DIN 912 and ISO 4762 specifications for socket head cap screws, and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from hazardous substances and safe for various industrial uses.