S-91025A804 5/8"-11 x 2 1/2" DIN 939 Setup Studs

Key Features & Benefits at a Glance

• Exceptional Tensile Strength – With a minimum tensile strength of 125,000 psi, these studs provide reliable load-bearing capacity and resist deformation under high-stress conditions.
• Superior Corrosion Resistance – The black-oxide steel finish offers enhanced protection against rust and wear, extending service life in demanding industrial environments.
• Precision Thread Fit – Class 2A thread fit ensures smooth, secure engagement with mating components, reducing the risk of cross-threading and improving assembly efficiency.
• Dual-End Threading Convenience – Threaded on both ends allows for versatile installation and easy adjustment in setup applications, saving time during machinery alignment.
• High Hardness for Durability – Rockwell C22 minimum hardness provides excellent resistance to abrasion and surface damage, maintaining thread integrity over repeated use.
• International Standard Compliance – Manufactured to DIN 939 specifications, ensuring consistent quality and interchangeability in global engineering projects.
• Environmental & Safety Compliance – RoHS 3 and REACH compliant, meeting strict regulations for hazardous substances and supporting sustainable manufacturing practices.

Professional Applications & Engineering Value

These black-oxide steel setup studs are engineered to address common challenges in industrial assembly, such as misalignment and component fatigue. The 5/8"-11 thread size and dual-end threading enable precise positioning in machinery setup, jigs, and fixtures, reducing downtime during adjustments. The high-strength steel material, combined with a Class 2A thread fit, ensures secure fastening without galling, making them ideal for repetitive disassembly in maintenance-heavy sectors like automotive manufacturing and heavy equipment. By adhering to DIN 939, these studs deliver consistent performance in tolerance-critical applications, enhancing overall system reliability and reducing the risk of fastener failure.

Specification Summary & Compliance

This product features a 2 1/2" length with threading on both ends (Thread Length A: 1", Thread Length B: 7/8") and a 5/8"-11 thread size. It meets Class 2A thread fit standards for precise dimensional accuracy and is manufactured in compliance with DIN 939. Additionally, it conforms to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental and safety requirements.