S-91375A847 3/4"-10 x 3" 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 surface treatment, extending service life in harsh industrial environments.
- Exceptional thread engagement and holding power due to Class 3A fit, ensuring secure, vibration-resistant connections.
- High-strength performance from alloy steel and Rockwell C45 hardness, providing reliable clamping force for heavy-duty applications.
- Easy installation and removal with a 3/8" hex drive, allowing for efficient assembly and maintenance with standard tools.
- Effective point contact and minimal surface marring from the cup tip design, ideal for precise positioning on shafts and components.
- Broad compatibility with UNC coarse threads, facilitating quick assembly and disassembly in various machinery and equipment.
- Compliance with major industry standards including ASME B18.3 and ASTM F912, ensuring consistent quality and reliability.
Professional Applications & Engineering Value
This black-oxide alloy steel set screw is engineered to address common challenges in high-stress industrial settings, such as component slippage and corrosion-induced failure. Its Class 3A thread fit and UNC coarse threading provide superior resistance to loosening under vibration, making it ideal for securing pulleys, gears, and collars on rotating shafts. The cup tip concentrates force for minimal surface damage while maintaining strong grip, and the hex drive ensures straightforward torque application. Coupled with Rockwell C45 hardness, it delivers long-term durability in applications like heavy machinery, automotive assemblies, and precision equipment, reducing maintenance needs and downtime.
Specification Summary & Compliance
This set screw adheres to precise dimensional standards, including 3/4"-10 UNC coarse threads with a Class 3A thread fit for tight tolerances and reliable performance. It meets ASME B18.3 and ASTM F912 specifications, ensuring consistent manufacturing quality. Additionally, it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmentally responsible and safe usage in global markets.
