S-91375A618 3/8"-16 x 7/16" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide coating that protects against rust in demanding industrial environments
• Exceptional holding power thanks to Class 3A thread fit ensuring tight, secure fastening in critical applications
• High-strength durability from alloy steel construction with Rockwell C45 hardness for reliable performance under stress
• Easy installation and removal with 3/16" hex drive design providing positive torque transmission and tool engagement
• Precise positioning capability through cup tip design that creates consistent indentation and prevents component slippage
• Industry-standard compatibility with UNC coarse threads that ensure broad interchangeability across equipment and machinery
• 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 set screw delivers critical engineering solutions for industrial applications requiring permanent positioning of components on shafts, collars, and pulleys. The black-oxide alloy steel construction provides excellent corrosion resistance while maintaining the Rockwell C45 hardness needed for high-strength applications. The Class 3A thread fit ensures precise engagement with mating components, eliminating play and vibration-induced loosening in machinery, automotive, and manufacturing equipment. The cup tip design creates consistent indentation marks on shafts, providing visual confirmation of proper installation while the headless configuration allows for flush mounting in space-constrained assemblies. These hex drive set screws are engineered to withstand high torque applications while maintaining their integrity in demanding environments.

Specification Summary & Compliance

This set screw features 3/8"-16 UNC coarse threads with Class 3A thread fit for precision engagement, measuring 7/16" in length with 0.375" thread diameter. Manufactured to ASME B18.3 specifications and compliant with ASTM F912 standards. The fastener meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors while maintaining exceptional dimensional accuracy and performance reliability.