S-91290A021 M1.6 x 4 mm DIN 912, ISO 4762 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional strength-to-weight ratio 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 various industrial environments
• Precise torque transmission through 1.5mm hex drive design, ensuring secure fastening without stripping
• Optimal thread engagement with M1.6 coarse thread (0.35mm pitch) for faster assembly and reduced cross-threading risk
• Maximum thread contact through fully threaded design, distributing load evenly across the entire fastener length
• Consistent dimensional accuracy maintained through Class 5g6g thread fit, ensuring reliable mating with components
• Global compliance assurance with RoHS 3 and REACH regulations, meeting international environmental standards

Professional Applications & Engineering Value

This M1.6 socket head cap screw delivers critical performance advantages in precision engineering applications where space constraints and high strength requirements coexist. The black-oxide alloy steel construction provides excellent corrosion protection while maintaining the Rockwell C37 hardness necessary for repeated disassembly and reassembly cycles. The metric hex drive system ensures reliable torque application in confined spaces common in electronics, medical devices, and precision instrumentation. With its fully threaded right-hand coarse thread design, this fastener solves common assembly challenges by providing maximum thread engagement and reducing installation time. The combination of Class 12.9 strength rating and DIN 912/ISO 4762 compliance makes it ideal for automotive components, robotics, and industrial machinery where vibration resistance and structural integrity are paramount.

Specification Summary & Compliance

This socket head cap screw maintains precise Class 5g6g thread fit tolerance according to metric standards, ensuring consistent performance across production runs. Manufacturing strictly adheres to DIN 912 and ISO 4762 specifications for dimensional accuracy and mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, meeting the latest international standards for hazardous substance restrictions. The alloy steel material with black-oxide surface treatment provides both corrosion resistance and consistent mechanical performance, backed by the 170,000 PSI tensile strength and Rockwell C37 hardness verification.