S-90281A098 1/4"-20 x 3" DIN 939 Setup Studs

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with black-oxide steel coating for prolonged service life in harsh industrial environments
• Superior load distribution through dual 1" threading on both ends, ensuring balanced force application and reduced stress concentration
• Precise assembly compatibility with Class 2A thread fit, enabling smooth engagement and minimizing cross-threading risks
• Exceptional mechanical reliability from 125,000 psi tensile strength and Rockwell C22 hardness, suitable for high-stress applications
• Global standard compliance with DIN 939 specifications, guaranteeing dimensional accuracy and interchangeability
• Environmental regulatory adherence through RoHS 3 and REACH compliance, ensuring safe use in regulated industries
• Versatile dual-end design allowing flexible installation in jigs, fixtures, and machinery setups without orientation constraints

Professional Applications & Engineering Value

Engineered for precision setup operations, these black-oxide steel setup studs address critical alignment and stability challenges in manufacturing fixtures, CNC machining centers, and assembly jigs. The dual threaded ends with standardized 1" engagement lengths provide secure mounting points while maintaining concentricity under dynamic loads. With 125,000 psi tensile strength and controlled Class 2A thread fit, they eliminate micro-movements in high-vibration environments, reducing tooling wear and improving repeatability. The DIN 939 compliance ensures seamless integration with European machinery, while the corrosion-resistant black-oxide finish extends service life in coolant-exposed industrial settings, making them ideal for automotive, aerospace, and heavy equipment tooling applications.

Specification Summary & Compliance

Manufactured to DIN 939 standards with Class 2A thread fit tolerance for consistent mating with standard nuts and threaded holes. The inch-dimensioned stud features unified 1/4"-20 thread size with balanced 1" threading on both ends. Meets mechanical requirements of 125,000 psi minimum tensile strength and Rockwell C22 hardness. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for hazardous substance restrictions.