S-90969A430 3/8"-16 Shoulder Screws

Key Features & Benefits at a Glance

• Enhanced Durability & Corrosion Resistance - Black oxide finish on alloy steel provides superior protection against rust and wear in demanding industrial environments
• Precision Thread Performance - Class 3A thread fit ensures tight tolerances and reliable fastening with minimal vibration loosening
• High-Strength Construction - 140,000 psi tensile strength and Rockwell C30 hardness deliver exceptional load-bearing capacity for heavy-duty applications
• Optimized Shoulder Design - 1/2" shoulder diameter with precise tolerances provides accurate alignment and bearing surfaces for rotating components
• Space-Saving Low Profile - Ultra-low socket head design allows installation in confined spaces while maintaining high torque capability
• Secure Grip & Easy Installation - Knurled head texture and 1/4" hex drive enable positive tool engagement and straightforward assembly
• Regulatory Compliance Assurance - Meets RoHS 3 and REACH environmental standards for safe use across global markets

Professional Applications & Engineering Value

This 3/8"-16 UNC shoulder screw delivers exceptional engineering value in precision assembly applications where component alignment and rotational stability are critical. The alloy steel construction with black oxide finish provides superior corrosion resistance while maintaining the high tensile strength required for demanding industrial environments. The precisely machined 1/2" shoulder diameter serves as an accurate locating surface for bearings, gears, and pulleys, eliminating the need for additional spacing components. The ultra-low socket head profile combined with Class 3A thread fit ensures reliable performance in applications where space constraints and vibration resistance are paramount. These shoulder screws are engineered to solve alignment challenges in machinery, automotive systems, and precision equipment where dimensional accuracy and long-term reliability are essential.

Specification Summary & Compliance

This precision shoulder screw features 3/8"-16 UNC coarse threads with Class 3A thread fit for superior dimensional accuracy. The shoulder diameter maintains tight tolerances of -0.004" to -0.002" while the shoulder length precision is controlled within -0.005" to 0.005" for consistent performance. Manufactured to exacting standards, this fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across industrial applications worldwide.