S-90251A174 8-32 x 1/8" ASME B18.3 Set Screws
Set Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Vibration-resistant locking with permanent nylon patch that maintains secure fastening under dynamic loads and temperature fluctuations from -50° to 250°F
- Superior corrosion resistance through 316 stainless steel construction, ideal for harsh environments and chemical exposure
- Precise thread engagement with Class 3A fit ensuring consistent clamping force and reduced risk of cross-threading
- High mechanical strength backed by Rockwell B80 hardness for durable performance in demanding applications
- Secure cup point design that bites into mating surfaces to prevent component slippage and rotation
- Industry-standard compliance meeting ASME B18.3 specifications for reliable interchangeability
- Flush mounting capability with headless design allowing clean installation in confined spaces
Professional Applications & Engineering Value
This 8-32 UNC hex headless set screw delivers critical engineering solutions for precision assemblies requiring permanent fastening. The 316 stainless steel construction provides exceptional resistance to corrosion and chemical degradation, making it ideal for marine, chemical processing, and food equipment applications. The nylon patch thread locker eliminates the need for additional locking components while maintaining consistent clamping force across a wide temperature range (-50° to 250°F). With its coarse UNC thread spacing and Class 3A thread fit, this fastener ensures rapid installation and reliable performance in high-vibration environments where traditional fasteners might loosen. The cup point design creates positive seating by embedding into mating surfaces, preventing rotational movement in pulleys, gears, and collars.
Specification Summary & Compliance
Manufactured to ASME B18.3 standards with Class 3A thread fit for precision dimensional accuracy. Features 8-32 UNC coarse threads with right-hand direction and 5/64" hex drive. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The nylon patch thread locker provides permanent locking capability without compromising the 316 stainless steel material integrity.
