S-92991A619 3/8"-16 x 1/2" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior holding power with Class 3A precision thread fit ensuring reliable, vibration-resistant fastening in demanding applications
• Excellent corrosion resistance from high-quality brass construction, ideal for harsh environments and electrical applications
• Enhanced durability with Rockwell B55 hardness providing optimal strength while maintaining brass's non-sparking properties
• Easy installation and removal through the 3/16" hex drive design, allowing for high torque application without head interference
• Secure positioning with cup tip design that creates positive engagement and prevents component slippage
• Wide compatibility with UNC coarse threading (3/8"-16) ensuring easy mating with standard components
• Right-hand thread direction for standard installation procedures familiar to maintenance teams

Professional Applications & Engineering Value

This brass set screw delivers exceptional performance in applications where corrosion resistance, non-magnetic properties, and non-sparking characteristics are critical. The Class 3A thread fit provides tighter tolerances than standard fasteners, eliminating play and ensuring precise component alignment in machinery, electrical enclosures, and precision instruments. The headless design with hex drive allows for flush mounting in confined spaces while maintaining high torque capability. The UNC coarse threading offers rapid installation and superior resistance to vibration loosening, making these set screws ideal for permanent positioning of gears, pulleys, and collars on shafts in manufacturing equipment, marine applications, and hazardous environments where steel fasteners pose sparking risks.

Specification Summary & Compliance

This precision 3/8"-16 UNC set screw features Class 3A thread fit for superior dimensional accuracy and meets ASME B18.3 specifications for dimensional standards. The fastener is manufactured from brass with Rockwell B55 hardness and includes a cup tip configuration. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental safety and restricted substance management for global industrial applications.