S-92311A621 3/8"-16 x 5/8" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction for long-lasting performance in harsh environments
• Precise thread engagement through Class 3A thread fit ensuring reliable, vibration-resistant fastening
• Exceptional durability with Rockwell B80 hardness providing excellent wear resistance and mechanical strength
• Secure torque transmission via 3/16" hex drive design allowing high tightening forces without head protrusion
• Enhanced gripping power from cup tip configuration that bites into mating surfaces for permanent positioning
• Industry-standard compatibility with UNC coarse threads and 3/8"-16 size for seamless integration into existing assemblies
• Regulatory compliance assurance meeting ASME B18.3 specifications and environmental standards including RoHS 3 and REACH

Professional Applications & Engineering Value

This 3/8"-16 UNC hex headless set screw delivers critical engineering solutions for industrial applications requiring permanent component positioning and alignment. The 18-8 Stainless Steel composition provides exceptional corrosion resistance in demanding environments including manufacturing equipment, marine applications, and food processing machinery. The Class 3A thread fit ensures precise engagement with mating components, eliminating backlash and maintaining positional accuracy under vibration and dynamic loads. The headless design with hex drive allows installation in confined spaces while the cup tip creates positive engagement with shaft surfaces, preventing slippage in high-torque applications. These set screws are engineered to withstand repeated adjustments without thread deformation, making them ideal for precision machinery, rotating assemblies, and permanent fixture applications where reliability is paramount.

Specification Summary & Compliance

This precision fastener features 3/8"-16 UNC coarse threads with Class 3A thread fit for superior dimensional accuracy and engagement. The 5/8" length provides optimal clamping range while maintaining structural integrity. Manufacturing complies with ASME B18.3 specifications for dimensional standards and performance requirements. The product is fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, meeting the latest environmental regulations for hazardous substance restrictions. Right-hand thread direction and standardized UNC thread form ensure compatibility with industry-standard components and tooling.