S-90778A016 2-56 x 1/8" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh industrial environments and chemical exposure
• Maximum holding power ensured by Class 3A thread fit, providing tighter tolerances and reduced risk of loosening under vibration
• High durability with Rockwell B80 hardness, maintaining structural integrity under repeated torque applications
• Secure fastening engagement from the 90° cone point design, delivering concentrated clamping force on mating surfaces
• Easy installation and removal using standard 0.035" hex keys, saving maintenance time and reducing tooling costs
• Reliable performance in right-hand coarse threads (UNC 2-56), enabling quick assembly and disassembly in general-purpose applications
• Compliance with industry standards including ASME B18.3, ensuring consistent quality and interchangeability

Professional Applications & Engineering Value

This 2-56 UNC set screw in 316 stainless steel addresses critical fastening challenges in precision assemblies. The hex headless design and Class 3A thread fit provide exceptional resistance to vibrational loosening, making it ideal for machinery, motor shafts, and precision equipment where space constraints and reliability are paramount. The 90° cone point concentrates clamping force, preventing component slippage in high-torque applications. With coarse thread spacing and Rockwell B80 hardness, it ensures durable performance in corrosive environments, from marine hardware to chemical processing equipment, while maintaining easy serviceability.

Specification Summary & Compliance

This set screw features a 0.086" thread diameter and 1/8" length with UNC coarse threads and Class 3A precision fit. Manufactured to ASME B18.3 specifications, it complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in restricted substance-sensitive applications.