S-90281A116 5/16"-18 x 3 1/2" DIN 939 Setup Studs

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with black-oxide steel coating for prolonged service life in demanding industrial environments
• Precise alignment and secure fastening through Class 2A thread fit, ensuring reliable connections without cross-threading
• High tensile strength of 125,000 psi provides exceptional load-bearing capacity for heavy-duty applications
• Rockwell C22 hardness maintains structural integrity under repeated stress and vibration
• Double-ended threading (1 1/8" each end) enables versatile installation and quick setup in jigs and fixtures
• Full compliance with DIN 939 standard guarantees dimensional accuracy and interchangeability
• RoHS 3 and REACH environmental certifications ensure safe usage in regulated industries worldwide

Professional Applications & Engineering Value

These black-oxide steel setup studs are engineered to solve critical alignment and durability challenges in precision manufacturing. The 5/16"-18 threading on both ends with Class 2A fit provides exceptional dimensional stability for fixture construction, mold setting, and machinery alignment. The black-oxide surface treatment offers superior corrosion protection in humid or chemically aggressive environments, while the 125,000 psi tensile strength and Rockwell C22 hardness prevent deformation under cyclic loading. Ideal for CNC machining setups, automotive jigs, and industrial assembly lines, these DIN 939 compliant studs deliver repeatable accuracy and reduced downtime.

Specification Summary & Compliance

Manufactured to DIN 939 specifications with Class 2A thread fit ensuring precise tolerance control. Thread size: 5/16"-18 with 1 1/8" threading length on both ends. Mechanical properties include 125,000 psi minimum tensile strength and Rockwell C22 minimum hardness. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for hazardous substance restrictions.