S-90605A252 M8 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 for reliable performance in demanding applications
• Superior corrosion resistance provided by black-oxide coating, extending service life in harsh industrial environments
• Precise left-hand threading (M8 x 1.25mm coarse) with Class 5g6g fit ensures secure fastening in specialized mechanical systems
• Optimized torque transmission through 6mm hex drive socket head design, preventing tool slippage and damage during installation
• Full thread coverage along the 20mm length enables maximum grip and load distribution across the entire fastener
• Enhanced hardness at Rockwell C37 maintains structural integrity under high stress and repeated use conditions
• Global compliance assurance meeting DIN 912/ISO 4762 standards plus RoHS 3 and REACH environmental regulations

Professional Applications & Engineering Value

This left-hand thread socket head cap screw delivers critical engineering solutions for industrial applications requiring reverse-threading security. The black-oxide alloy steel construction provides superior corrosion resistance while maintaining the Class 12.9 strength rating essential for high-stress assemblies. The M8 coarse thread with precise Class 5g6g fit ensures reliable engagement in machinery, automotive systems, and specialized equipment where standard right-hand threads would loosen under counter-rotational forces. The 6mm hex drive socket head design allows for high-torque installation in confined spaces, while the fully threaded 20mm length maximizes clamping force distribution. These metric socket screws are engineered to prevent accidental disassembly in vibrating environments, making them ideal for precision manufacturing equipment, rotational machinery components, and safety-critical industrial applications.

Specification Summary & Compliance

This socket head cap screw features M8 x 1.25mm coarse left-hand threads with Class 5g6g thread fit tolerance, ensuring precision engagement. The fastener maintains dimensional compliance with DIN 912/ISO 4762 specifications for socket head cap screws. Manufacturing and material standards meet Class 12.9 strength requirements with verified 170,000 PSI tensile strength and Rockwell C37 hardness. Environmental compliance is confirmed through RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) certifications, ensuring safe use across industrial sectors.