S-92313A017 4-40 x 3/8" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 Stainless Steel construction for extended service life in harsh environments
• Precise thread engagement with Class 3A fit ensuring reliable fastening and vibration resistance
• High-strength performance backed by Rockwell B80 hardness for durable, long-term applications
• Secure installation through 0.050" hex drive design providing excellent torque transmission
• Enhanced gripping power with cup tip design creating positive mechanical locking
• Industry-standard compatibility with UNC coarse threads for easy replacement and interchangeability
• Environmental compliance meeting RoHS 3 and REACH regulations for safe industrial use

Professional Applications & Engineering Value

This 4-40 UNC set screw delivers exceptional engineering value for precision assembly applications where space constraints and corrosion resistance are critical. The headless design allows for flush mounting in tight spaces, while the 316 Stainless Steel material provides superior protection against chemical exposure and atmospheric corrosion. The Class 3A thread fit ensures precise dimensional accuracy for secure fastening in high-vibration environments, making it ideal for machinery components, precision instruments, and industrial equipment. The hex drive configuration offers reliable torque application without slippage, and the cup tip creates concentrated point pressure for maximum holding power in shaft collars, gears, and pulleys.

Specification Summary & Compliance

This set screw features 4-40 UNC coarse threads with Class 3A thread fit for precision dimensional accuracy. Manufactured to ASME B18.3 specifications with right-hand thread direction and 3/8" length. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial applications while maintaining strict quality standards.