S-90281A092 1/4"-20 x 3 1/2" DIN 939 Setup Studs

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with black-oxide steel coating, extending service life in demanding industrial environments
• Precise Class 2A thread fit ensures smooth assembly and reliable connections in repetitive setup applications
• High tensile strength of 125,000 psi provides superior load-bearing capacity for heavy-duty machinery and tooling
• Double-ended threading with 1" engagement on each side allows versatile mounting and secure fastening from both ends
• DIN 939 compliance guarantees standardized dimensions and performance for international engineering projects
• RoHS 3 and REACH compliant meeting strict environmental regulations for safe use in global supply chains
• Rockwell C22 hardness maintains structural integrity under high-stress conditions without deformation

Professional Applications & Engineering Value

These threaded setup studs are engineered to solve critical alignment and mounting challenges in precision industries. The black-oxide steel construction provides a durable, corrosion-resistant surface ideal for CNC machining fixtures, assembly jigs, and modular tooling systems where exposure to coolants and oils is common. With 1/4"-20 threading on both ends and a Class 2A thread fit, they enable quick installation and removal while maintaining positional accuracy in repetitive setup operations. The 3 1/2" length offers optimal spacing for workholding devices, reducing vibration and improving machining precision. By combining DIN 939 standardization with high tensile strength, these studs deliver reliable performance in automotive manufacturing, aerospace tooling, and industrial automation applications where dimensional stability and repeatability are paramount.

Specification Summary & Compliance

Manufactured to DIN 939 specifications with Class 2A thread fit tolerances ensuring precise engagement. The 1/4"-20 thread size provides standardized compatibility with industrial equipment. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations confirms environmental safety. Mechanical properties include 125,000 psi minimum tensile strength and Rockwell C22 minimum hardness for consistent performance under load.