S-91385A628 3/8"-16 x 2" ASME B18.3, ASTM F912 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
- Secure vibration-resistant locking with permanent nylon patch that maintains integrity across extreme temperatures from -50°F to 250°F
- Superior torque transmission through 3/16" hex drive design that prevents tool slippage during installation
- Precision thread engagement with Class 3A UNC coarse threads ensuring reliable fastening in demanding applications
- Enhanced material durability from black-oxide alloy steel with Rockwell C45 hardness for exceptional wear resistance
- Maximum grip strength through cup point design that creates permanent seating in mating components
- Industry-standard compliance meeting ASME B18.3 specifications for consistent performance and interchangeability
- Environmental regulation adherence with RoHS 3 and REACH compliance for global manufacturing applications
Professional Applications & Engineering Value
This black-oxide alloy steel set screw delivers critical engineering solutions where permanent positioning and vibration resistance are paramount. The combination of Class 3A UNC coarse threads and nylon patch thread locker addresses common industrial challenges of component slippage and loosening under dynamic loads. The cup point design bites deeply into mating surfaces, creating reliable anchoring in pulleys, gears, and collars. With temperature stability from -50°F to 250°F, this headless set screw performs consistently in automotive assemblies, heavy machinery, and manufacturing equipment where thermal cycling occurs. The Rockwell C45 hardness ensures the hex drive and threads maintain integrity through repeated installation cycles, reducing replacement costs and downtime.
Specification Summary & Compliance
Manufactured to precise Class 3A thread fit tolerances with UNC coarse threads (3/8"-16) and 2" length. The black-oxide alloy steel construction meets ASME B18.3 specifications where applicable. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for international industrial markets and environmentally conscious manufacturing processes.
