S-94115A051 2-56 x 1/8" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide coating on alloy steel for extended service life in demanding environments
• Precise positioning and vibration resistance thanks to the non-marring nylon 6/6 tip that prevents damage to mating surfaces
• High-strength performance with Rockwell C28 hardness ensuring reliable clamping force and thread integrity
• Wide temperature tolerance with nylon tip rated for -50° to 250°F (-45° to 121°C) for stable performance across various operating conditions
• Exceptional thread precision with Class 3A fit providing tighter tolerances for secure fastening in critical applications
• Easy installation and removal with 0.035" hex drive design allowing efficient tool engagement in confined spaces
• Industry-standard compliance meeting ASME B18.3 specifications for guaranteed interchangeability and reliability

Professional Applications & Engineering Value

This 2-56 UNC set screw with black-oxide alloy steel construction delivers exceptional engineering value in precision assembly applications. The headless design with hex drive enables flush mounting in tight spaces where protruding fasteners are impractical. The nylon 6/6 plastic tip provides superior vibration resistance while preventing surface damage to expensive components, making it ideal for securing collars, knobs, and pulleys on shafts. The coarse thread spacing and Class 3A thread fit ensure rapid installation with minimal cross-threading risk, while the right-hand thread direction follows industry standards for intuitive assembly. These features combine to solve common industrial challenges of component slippage, surface marring, and maintenance accessibility in machinery, automotive, and electronic enclosures.

Specification Summary & Compliance

This precision set screw features exact dimensional accuracy with Class 3A thread fit per UNC thread standards, ensuring superior engagement and clamping performance. Manufacturing complies with ASME B18.3 specifications for dimensional consistency and mechanical properties. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting current environmental regulations for hazardous substance restrictions. Thread specifications include 2-56 UNC coarse spacing with 0.086" diameter and 1/8" length, providing reliable performance in industrial fastening applications requiring precise torque transmission and vibration resistance.