S-92778A044 4-40 x 3/16" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Precise Class 3A thread fit ensures reliable, vibration-resistant fastening in critical assemblies
• Hex headless design allows for flush mounting and secure installation in confined spaces
• Enhanced durability from Rockwell B80 hardness, providing excellent wear resistance and longevity
• Oval tip design distributes pressure evenly, minimizing damage to mating surfaces
• Coarse UNC threads enable quick installation and strong holding power in various materials
• Compliance with ASME B18.3 standards guarantees consistent quality and dimensional accuracy

Professional Applications & Engineering Value

This 4-40 UNC set screw delivers exceptional performance in precision mechanical assemblies where space constraints and corrosion resistance are critical. The 18-8 stainless steel material provides excellent chemical resistance, making it suitable for automotive, electronics, and marine applications. The hex drive design ensures maximum torque transmission without slippage, while the Class 3A thread fit maintains tight tolerances for vibration-prone environments. The oval tip prevents component marring, and coarse threads facilitate rapid installation in production lines. Engineered to meet ASME B18.3 specifications, this set screw offers reliable positioning and locking capabilities in shafts, collars, and pulleys.

Specification Summary & Compliance

This set screw features 4-40 UNC coarse threads with Class 3A thread fit for precision assembly. Manufactured to ASME B18.3 dimensional standards with a length of 3/16" and 0.050" hex drive. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in industrial applications worldwide.