S-91290A088 M20 x 260 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 high-stress applications.
• Superior corrosion resistance due to black-oxide surface treatment, extending service life in harsh industrial environments.
• Precise torque transmission enabled by 17mm hex drive and standard socket head, reducing stripping and ensuring secure fastening.
• Optimized thread engagement with M20x2.5 coarse thread and Class 5g6g fit, facilitating quick assembly and vibration resistance.
• Enhanced durability from Rockwell C37 hardness and alloy steel construction, minimizing wear and deformation under load.
• Versatile partial threading (52mm min thread length) allows for adjustable clamping and secure joint fixation.
• Global compliance assurance meeting DIN 912/ISO 4762 standards, RoHS 3, and REACH for safe, regulated use worldwide.

Professional Applications & Engineering Value

This M20 socket head cap screw delivers critical reliability in demanding industrial applications such as heavy machinery, automotive assemblies, and structural frameworks. Manufactured from black-oxide alloy steel, it combats corrosion and oxidation, addressing common failure points in humid or abrasive settings. The coarse thread metric design with Class 5g6g thread fit ensures rapid installation and maintains integrity under dynamic loads, while the partially threaded configuration provides flexibility for precise clamping control. Engineered to DIN 912/ISO 4762 specifications, it guarantees dimensional accuracy and interchangeability, reducing downtime and replacement costs in high tensile strength operational environments.

Specification Summary & Compliance

This socket head cap screw features M20x2.5 coarse thread with Class 5g6g thread fit (equivalent to ISO tolerance standards), a minimum thread length of 52mm, and full compliance with DIN 912/ISO 4762 manufacturing specifications. It adheres to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material restrictions are met for global industrial use.