S-91290A069 M20 x 100 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 under extreme loads, minimizing the risk of fastener failure in critical applications.
• Superior corrosion resistance provided by the black-oxide coating on alloy steel, extending service life in harsh industrial environments.
• High hardness rating of Rockwell C37 offers excellent wear resistance, maintaining thread integrity and drive features through repeated use.
• Precise Class 5g6g thread fit guarantees smooth assembly and secure fastening, reducing installation time and improving joint reliability.
• Partially threaded design allows for controlled clamping force and easier alignment in assemblies, enhancing overall structural stability.
• Standard hex drive (17 mm) enables quick and secure tool engagement, facilitating efficient installation and removal with common tools.
• Compliance with DIN 912/ISO 4762 standards ensures dimensional accuracy and interchangeability, providing peace of mind for global engineering projects.

Professional Applications & Engineering Value

This M20 socket head cap screw is engineered to address common industrial challenges, such as vibration-induced loosening and environmental degradation. The black-oxide alloy steel construction, combined with a Class 12.9 strength rating, delivers robust performance in heavy machinery, automotive assemblies, and construction equipment where high tensile and fatigue resistance are critical. The coarse thread with a 2.5 mm pitch ensures rapid installation and reliable holding power in materials like steel and cast iron, reducing downtime. Its partially threaded shank concentrates stress appropriately, preventing thread damage and ensuring consistent clamp load. Ideal for applications demanding precision and durability, this fastener supports efficient maintenance and long-term operational safety in demanding sectors.

Specification Summary & Compliance

This product adheres to DIN 912 / ISO 4762 specifications, ensuring precise dimensions including a head diameter of 30 mm, length of 100 mm, and thread size of M20 x 2.5 mm with a Class 5g6g thread fit for consistent performance. It is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, supporting environmental and safety standards in industrial supply chains.