S-91290A180 M4 x 30 mm DIN 912, ISO 4762 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 170,000 PSI for reliable performance in high-stress industrial applications.
• Superior corrosion resistance provided by the black-oxide coating, extending service life in harsh environments.
• High hardness rating of Rockwell C37 ensures excellent wear resistance and durability under repetitive loads.
• Precise hex socket drive with 3 mm size allows for secure tool engagement and reduced risk of stripping.
• Optimized thread design with coarse 0.7 mm pitch and Class 5g6g fit for quick assembly and vibration resistance.
• Partially threaded shank enables precise clamping force control and reduced thread galling.
• Compliance with international standards including DIN 912/ISO 4762, ensuring interchangeability and quality assurance.

Professional Applications & Engineering Value

Engineered for demanding industrial applications, this M4 socket head cap screw addresses critical challenges in machinery assembly, automotive components, and precision equipment. The black-oxide alloy steel construction combats rust and oxidation, ideal for environments exposed to moisture or chemicals. With a Class 12.9 strength rating and coarse metric thread, it provides high clamp load retention and resists loosening under dynamic stresses. The hex drive design ensures easy installation in confined spaces, while the partially threaded rod minimizes cross-threading risks. These features make it a top choice for engineers seeking corrosion-resistant fasteners that maintain integrity in heavy-duty operations, from production lines to structural frameworks.

Specification Summary & Compliance

This screw adheres to DIN 912 / ISO 4762 specifications, with precise thread fit Class 5g6g and coarse thread spacing for consistent performance. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring environmental safety and regulatory alignment for global supply chains.