S-94105A539 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
- Superior corrosion resistance with black-oxide coating, extending service life in harsh industrial environments.
- High-strength performance from alloy steel and Rockwell C45 hardness, ensuring reliable, long-term fastening under load.
- Precise thread engagement with Class 3A fit and UNC coarse threads, providing secure, vibration-resistant connections.
- Space-saving headless design allows for flush mounting in applications where protruding hardware is not feasible.
- Easy installation and removal using a standard 1/8" hex key, reducing assembly time and tooling complexity.
- Compliance with major standards including ASME B18.3, ensuring consistent quality and interchangeability.
- Environmentally responsible manufacturing with RoHS 3 and REACH compliance, meeting global regulatory requirements.
Professional Applications & Engineering Value
Engineered for demanding industrial applications, these Black-Oxide Alloy Steel Set Screws address common challenges like component slippage and corrosion-induced failure. The headless hex socket design and Class 3A UNC coarse threads deliver exceptional clamping force and vibration resistance, making them ideal for securing collars, gears, and pulleys on shafts. The black-oxide surface treatment provides a durable barrier against moisture and chemicals, reducing maintenance needs in machinery, automotive, and heavy equipment assemblies. By combining high Rockwell C45 hardness with precise thread fit, these screws ensure reliable performance in high-stress environments, minimizing downtime and enhancing operational safety.
Specification Summary & Compliance
This set screw meets ASME B18.3 specifications, with a 1/4"-20 UNC coarse thread and Class 3A thread fit for precise dimensional accuracy. It is manufactured from alloy steel and treated to Rockwell C45 hardness for consistent mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free of restricted hazardous substances and safe for use in various markets.
