S-90281A104 5/16"-18 x 3" DIN 939 Setup Studs

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with black-oxide steel coating, extending service life in demanding industrial environments
• Precise thread engagement with Class 2A thread fit ensuring reliable assembly and disassembly without cross-threading
• Exceptional tensile strength of 125,000 psi provides secure fastening under high-stress conditions
• Double-ended threading enables versatile setup applications and simplifies installation in complex assemblies
• Consistent hardness performance at Rockwell C22 maintains structural integrity through repeated use cycles
• International standard compliance with DIN 939 ensures compatibility with global equipment and tooling systems
• Environmental regulation adherence with RoHS 3 and REACH compliance for responsible manufacturing practices

Professional Applications & Engineering Value

These black-oxide steel setup studs deliver critical performance in precision manufacturing and assembly operations. The double-ended threading with 5/16"-18 thread size allows for efficient setup in jigs, fixtures, and machining applications where repeated component changes are required. The Class 2A thread fit provides optimal clearance for quick installation while maintaining positional accuracy. The black-oxide surface treatment offers superior corrosion protection compared to plain steel, significantly reducing maintenance downtime in industrial environments. These DIN 939 compliant studs are engineered to withstand the rigors of production environments while ensuring consistent alignment and mounting stability for precision equipment.

Specification Summary & Compliance

Manufactured to exacting standards with Class 2A thread fit tolerance for reliable performance. Features 1 1/8" thread length on both ends with 5/16"-18 unified thread size. Complies with DIN 939 specifications for dimensional accuracy and mechanical properties. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance standards. The 125,000 psi minimum tensile strength and Rockwell C22 hardness ensure consistent performance across industrial applications.