S-91290A050 M18 x 90 mm DIN 912, ISO 4762 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 170,000 psi ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
• Superior corrosion resistance from the black-oxide finish on alloy steel extends service life in harsh industrial environments.
• High hardness rating (Rockwell C37) provides excellent wear resistance, maintaining thread integrity through repeated use.
• Precise hex drive engagement with a 14 mm drive size allows for secure tightening and reduced tool slippage.
• Optimized thread design with coarse M18 x 2.5 mm pitch and Class 5g6g fit enables quick assembly and strong holding power.
• Partially threaded shank offers flexibility for applications requiring clamped and unthreaded sections, improving joint stability.
• Compliance with international standards including DIN 912/ISO 4762 ensures interchangeability and quality assurance in global supply chains.

Professional Applications & Engineering Value

This M18 socket head cap screw is engineered to address critical challenges in heavy machinery, automotive, and construction sectors where vibration, dynamic loads, and environmental exposure are common. The black-oxide alloy steel construction combats rust and degradation, while the Class 12.9 strength rating and 170,000 psi tensile strength provide a safety margin against over-torque and fatigue. The coarse metric thread with a 2.5 mm pitch ensures rapid installation and robust clamping force, minimizing assembly time in production lines. Ideal for securing structural components, engine parts, and industrial equipment, this partially threaded fastener delivers consistent performance under extreme conditions, supported by its hex drive design for precise torque application.

Specification Summary & Compliance

This product adheres to DIN 912 and ISO 4762 specifications, ensuring dimensional accuracy with a Class 5g6g thread fit for consistent engagement. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, confirming it is free from hazardous substances and suitable for regulated industrial use. The partially threaded rod has a minimum thread length of 48 mm and an overall length of 90 mm, designed for reliable performance in standardized applications.