S-92313A102 4-40 x 3/32" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 Stainless Steel construction, ideal for harsh or marine environments
• Exceptional thread precision with Class 3A fit for reliable, vibration-resistant assemblies and minimal backlash
• Secure, high-torque installation enabled by the internal hex drive design, preventing tool slippage
• Optimized for permanent positioning with a headless, cup tip design that bites into materials without protruding
• Enhanced mechanical strength from Rockwell B80 hardness, resisting deformation under load
• Wide industrial compatibility due to UNC coarse threading, facilitating faster assembly and disassembly
• Full regulatory compliance meeting ASME B18.3, RoHS 3, and REACH for safe, global usage

Professional Applications & Engineering Value

This 4-40 UNC set screw in 316 Stainless Steel is engineered to address critical challenges in precision assembly and corrosive environments. Its headless design and cup tip provide a flush, permanent grip on shafts, collars, and gears, eliminating protrusions in compact machinery. The hex drive ensures high torque transfer without cam-out, while the Class 3A thread fit maintains tight tolerances to resist loosening under vibration. Ideal for applications in aerospace, medical devices, and marine equipment, this fastener combines corrosion resistance with reliable performance in demanding conditions, reducing maintenance and replacement costs.

Specification Summary & Compliance

This set screw adheres to ASME B18.3 specifications, with a 4-40 UNC coarse thread and Class 3A precision thread fit for consistent engagement. It is manufactured from 316 Stainless Steel with a hardness of Rockwell B80 and features a right-hand thread direction. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and unrestricted industrial use.