S-90669A619 3/8"-16 x 1/2" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction for long-term reliability in harsh environments
• Precise Class 3A thread fit ensures tight, secure fastening with minimal backlash in demanding applications
• Non-marring brass soft tip protects sensitive surfaces from damage while maintaining strong clamping force
• Hex drive design provides high torque capability and easy installation in confined spaces
• Heavy-duty Rockwell B80 hardness delivers excellent wear resistance and durability under vibration
• Coarse UNC thread profile enables quick assembly and disassembly while resisting loosening
• Full regulatory compliance meets ASME B18.3 specifications and environmental standards including RoHS 3 and REACH

Professional Applications & Engineering Value

This 3/8"-16 UNC set screw delivers exceptional engineering value for industrial applications requiring reliable shaft positioning and component retention. The 18-8 stainless steel construction provides excellent corrosion resistance, making it ideal for machinery, automotive, and marine environments where moisture and chemicals are present. The Class 3A thread fit ensures precise engagement with mating components, eliminating play in precision assemblies. The brass soft tip design prevents damage to expensive shafts and rotating components while maintaining secure positioning. The headless configuration with hex drive allows installation in tight spaces where conventional fasteners cannot be used, solving space-constrained assembly challenges while providing the holding power needed for high-vibration applications.

Specification Summary & Compliance

This set screw features 3/8"-16 UNC coarse threads with Class 3A thread fit precision, ensuring tight tolerances for secure fastening. Manufacturing complies with ASME B18.3 specifications for dimensional accuracy and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, containing no restricted substances. Thread direction is right-hand with a length of 1/2" and features a brass tip measuring 0.188" diameter and 0.094" length for surface protection.