S-94495A247 1/4"-20 x 3/4" 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 permanent nylon patch that maintains secure fastening in dynamic environments
- Exceptional temperature tolerance from -70° to 250°F for reliable performance in extreme operating conditions
- Superior thread precision with Class 3A UNC coarse threads ensuring perfect fit and maximum holding power
- Enhanced durability through Rockwell C45 hardness and black-oxide coating for corrosion resistance
- Space-saving headless design with hex drive for flush mounting in confined assembly spaces
- Industry-standard compliance meeting ASME B18.3 specifications for guaranteed quality and interchangeability
- Environmental responsibility with RoHS 3 and REACH compliance for safe use in regulated industries
Professional Applications & Engineering Value
This black-oxide alloy steel set screw delivers critical engineering solutions where vibration resistance and space constraints challenge traditional fasteners. The permanent nylon patch thread locker creates a chemical bond that prevents loosening under continuous stress, eliminating the need for additional locking components. With UNC coarse threads and Class 3A precision, these screws provide superior engagement in soft materials and rapid assembly in production environments. The headless hex drive design allows complete flush installation in pulleys, gears, and collars while the Rockwell C45 hardness ensures long-term performance in high-torque applications. Ideal for machinery, automotive, and industrial equipment where reliability and compliance with ASME B18.3 standards are non-negotiable.
Specification Summary & Compliance
Manufactured to exact Class 3A thread fit tolerances with UNC 1/4"-20 coarse threading and 3/4" length. Complies with ASME B18.3 dimensional specifications and features black-oxide alloy steel construction with Rockwell C45 hardness. Meets environmental standards including RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance. The nylon patch thread locker operates within -70° to 250°F temperature range, ensuring reliable performance across industrial applications.
