S-91385A177 5/8"-11 x 1/2" 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
- Vibration-resistant locking with nylon patch thread locker that maintains secure fastening from -50°F to 250°F
- Superior corrosion protection through black-oxide coating on alloy steel for extended service life in harsh environments
- Precise thread engagement with Class 3A thread fit ensuring reliable, tight-tolerance connections
- High-strength construction featuring Rockwell C45 hardness for exceptional load-bearing capacity
- Easy installation and removal with 5/16" hex drive design that provides superior torque transmission
- Space-saving headless design allowing flush mounting in confined applications
- Durable cup tip that creates positive seating and prevents surface damage during tightening
Professional Applications & Engineering Value
This 5/8"-11 UNC set screw delivers critical performance in demanding industrial applications where vibration resistance and positional accuracy are paramount. The combination of black-oxide alloy steel construction and nylon patch thread locker technology addresses common failure points in machinery, automotive, and heavy equipment assemblies. The coarse thread spacing provides rapid installation while maintaining holding power, and the cup tip design ensures positive contact without marring shaft surfaces. Engineered to withstand extreme temperature fluctuations from -50°F to 250°F, this headless set screw offers reliable fastening in environments where thermal cycling would compromise standard fasteners.
Specification Summary & Compliance
This set screw features 5/8"-11 UNC coarse threads with Class 3A thread fit for precision engagement, manufactured to ASME B18.3 specifications and ASTM F912 standards. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global industrial markets. With a 1/2" length and right-hand thread direction, this fastener meets the stringent requirements for quality and reliability in professional applications.
