S-91290A976 M30 x 240 mm DIN 912, ISO 4762 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength with Class 12.9 rating (170,000 PSI) for reliable performance in the most demanding heavy-duty applications
• Superior corrosion resistance provided by the black-oxide finish on alloy steel, extending service life in harsh industrial environments
• Precision thread fit with Class 5g6g tolerance ensuring smooth installation and secure fastening in metric coarse thread applications
• Optimized drive engagement through 22mm hex socket drive for high torque transmission without stripping or cam-out
• Enhanced design flexibility with partially threaded shank allowing for both clamping and alignment functions
• Maximum hardness durability with Rockwell C37 rating maintaining structural integrity under repeated stress and vibration
• Global compliance assurance meeting DIN 912/ISO 4762 standards plus RoHS 3 and REACH environmental regulations

Professional Applications & Engineering Value

This M30 socket head cap screw delivers critical engineering solutions where high clamp load and vibration resistance are paramount. The black-oxide alloy steel construction combined with Class 12.9 strength prevents failure in heavy machinery, automotive assemblies, and industrial equipment subjected to extreme forces. The coarse thread metric design with 3.5mm pitch ensures rapid installation and superior holding power in soft materials or when frequent disassembly is required. With partial threading along its 240mm length, engineers achieve precise joint compression while the unthreaded section maintains alignment in structural applications. The 22mm hex drive interface allows for high-torque installation without damaging the fastener head, making it ideal for maintenance-critical environments where reliability cannot be compromised.

Specification Summary & Compliance

This socket head cap screw features M30x3.5 metric coarse threads with Class 5g6g thread fit tolerance per ISO standards, ensuring precise engagement in matched components. Manufacturing complies with DIN 912/ISO 4762 specifications for dimensional accuracy and mechanical properties. The fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, containing no restricted substances. With a minimum thread length of 72mm on the 240mm overall length, it maintains Class 12.9 strength rating throughout its service life.