S-94328A989 3/8"-16 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with 140,000 psi tensile strength for reliable performance in high-stress applications
• Superior corrosion resistance from black oxide finish, extending service life in harsh industrial environments
• Precision thread engagement with Class 3A fit ensuring secure fastening and vibration resistance
• Enhanced grip and torque application through knurled socket head with hex drive design
• Accurate component alignment via 1/2" shoulder diameter with tight tolerance control
• Optimized for heavy-duty cycles with Rockwell C30 hardness maintaining dimensional stability
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for global industrial use

Professional Applications & Engineering Value

This alloy steel shoulder screw delivers critical engineering solutions where precision alignment and high-strength fastening are paramount. The 3/8"-16 UNC coarse thread with Class 3A fit provides superior resistance to loosening under vibration, while the black oxide finish protects against corrosion in manufacturing environments. The 1/2" shoulder diameter with controlled tolerances ensures precise component positioning in machinery, automation systems, and rotating assemblies. The knurled socket head design allows for high-torque installation in confined spaces, making it ideal for precision equipment, industrial robots, and heavy-duty mechanical systems requiring reliable shoulder screw performance.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 3A thread fit for superior engagement. The shoulder diameter maintains -0.004" to -0.002" tolerance while shoulder length is controlled within -0.005" to 0.005". Features UNC coarse threads with right-hand direction and 1/4" hex drive compatibility. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for industrial applications worldwide.