S-90669A143 6-32 x 1/4" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to 18-8 stainless steel construction, ideal for harsh industrial environments
• Precise, vibration-resistant fastening with Class 3A thread fit ensuring tight tolerances and reliable performance
• Non-marring brass tip protects sensitive components from damage during installation and adjustment
• Secure hex drive engagement with 1/16" drive size providing excellent torque transmission and slip resistance
• Optimized for high-vibration applications featuring coarse UNC threads and right-hand direction for superior holding power
• Consistent mechanical performance with Rockwell B80 hardness balancing strength and durability
• Full regulatory compliance meeting ASME B18.3 standards and environmental regulations including RoHS 3 and REACH

Professional Applications & Engineering Value

This 6-32 UNC set screw delivers exceptional engineering value in applications requiring precise component positioning and vibration resistance. The 18-8 stainless steel construction provides excellent corrosion resistance for demanding environments, while the Class 3A thread fit ensures precise engagement and eliminates play in critical assemblies. The integrated brass soft tip prevents damage to shafts, gears, and other precision components during installation and adjustment cycles. Particularly valuable in machinery, automotive, and electronic applications, this headless set screw with 1/16" hex drive offers reliable fastening where space constraints and corrosion resistance are primary concerns. The coarse thread spacing maintains holding power even under significant vibration, making it ideal for rotating components and adjustable mechanisms.

Specification Summary & Compliance

This precision fastener features 6-32 UNC coarse threads with Class 3A thread fit for superior dimensional accuracy and engagement. Manufactured to ASME B18.3 specifications, the set screw maintains consistent 0.138" thread diameter and 1/4" length with 1/16" hex drive compatibility. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across industrial applications. Mechanical properties include Rockwell B80 hardness for optimal strength-to-ductility balance, supporting reliable performance in demanding fastening scenarios.