S-90605A002 M4 x 6 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 for reliable performance in high-stress applications.
• Superior corrosion resistance due to black-oxide coating on alloy steel, extending service life in demanding industrial environments.
• Precise left-hand threading with M4 x 0.7mm coarse pitch and Class 5g6g fit, ensuring secure fastening where reverse rotation is required.
• Easy installation and removal using a standard 3 mm hex key, providing a flush, low-profile head design for space-constrained assemblies.
• Full compliance with international standards including DIN 912/ISO 4762, guaranteeing dimensional accuracy and interchangeability.
• Environmentally responsible manufacturing with RoHS 3 and REACH compliance, meeting strict regulatory requirements for industrial use.
• Consistent hardness and wear resistance at Rockwell C37, maintaining thread integrity and reducing the risk of stripping under torque.

Professional Applications & Engineering Value

This left-hand thread socket head cap screw is engineered to address critical assembly challenges in machinery, automotive, and aerospace sectors where reverse-thread mechanisms prevent loosening from counter-clockwise motion. The black-oxide alloy steel construction offers enhanced corrosion protection, reducing maintenance needs in humid or chemically exposed environments. With a Class 12.9 strength rating and 170,000 psi tensile strength, it withstands extreme vibrational and dynamic loads, making it ideal for high-stress connections in engine components, precision tools, and heavy equipment. The coarse pitch metric thread (M4 x 0.7mm) ensures quick installation and reliable grip in soft materials or pre-tapped holes, while the standard hex drive allows for efficient torque application with common tools, minimizing assembly time and improving workflow efficiency in industrial settings.

Specification Summary & Compliance

This screw adheres to DIN 912/ISO 4762 specifications, ensuring precise dimensional tolerances for head diameter (7 mm), length (6 mm), and Class 5g6g thread fit. It is fully threaded for uniform load distribution and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, confirming the absence of hazardous substances. Manufactured to metric left-hand thread standards with coarse spacing, it guarantees compatibility and safety in regulated industrial applications.