S-90337A498 3/8"-16 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish for extended service life in harsh environments
• Precise alignment and reduced wear achieved through controlled shoulder diameter tolerance (-0.001" to 0") for accurate component positioning
• High-strength performance with 70,000 psi tensile strength and Rockwell B55 hardness to withstand demanding mechanical loads
• Space-saving installation enabled by low-profile socket head design, ideal for compact assemblies and tight clearance applications
• Reliable thread engagement with UNC coarse threads and Class 2A fit ensuring secure fastening and vibration resistance
• Environmental compliance assurance meeting RoHS 3 and REACH regulations for safe use in regulated industries
• Efficient installation using standard 1/4" hex drive tools for quick assembly and maintenance operations

Professional Applications & Engineering Value

This 18-8 stainless steel shoulder screw delivers critical engineering solutions where precision alignment and durability are paramount. The 1/2" shoulder diameter with precise tolerance control eliminates bushing requirements in rotating assemblies, reducing component count and maintenance costs. The low-profile socket head design accommodates space-constrained applications in machinery, automation systems, and precision instruments while maintaining 70,000 psi tensile strength. The passivated finish enhances corrosion resistance in industrial environments, and UNC coarse threads with Class 2A fit ensure reliable performance in high-vibration applications. These shoulder screws serve as ideal precision pivots, axles, and alignment pins in manufacturing equipment, robotics, and automotive assemblies where dimensional accuracy and material integrity are non-negotiable.

Specification Summary & Compliance

Manufactured to exacting standards, this shoulder screw features 3/8"-16 UNC threads with Class 2A fit for consistent thread engagement. The shoulder maintains precise dimensional control with diameter tolerance of -0.001" to 0" and length tolerance of 0" to 0.002". The component complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe usage across global markets. Mechanical properties include Rockwell B55 hardness and 70,000 psi tensile strength, providing reliable performance in demanding industrial applications.