S-91375A840 3/4"-10 x 1 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.
- Exceptional holding power provided by Class 3A thread fit, ensuring secure fastening under high vibration and load.
- High-strength durability from alloy steel and Rockwell C45 hardness, resisting deformation under extreme mechanical stress.
- Easy installation and removal with 3/8" hex drive, allowing efficient maintenance in confined spaces due to headless design.
- Reliable coarse thread engagement with 3/4"-10 UNC threads, enabling quick assembly and reduced cross-threading risks.
- Enhanced grip and alignment from the cup tip, minimizing component slippage and improving positional accuracy.
- Compliance with global standards including ASME B18.3 and ASTM F912, ensuring consistent quality and safety in industrial applications.
Professional Applications & Engineering Value
This black-oxide alloy steel set screw is engineered to address critical challenges in heavy machinery, automotive, and manufacturing sectors where vibration resistance and long-term reliability are paramount. The headless hex drive design allows for flush mounting in tight spaces, preventing interference while the Class 3A thread fit and coarse UNC threads deliver robust clamping force that withstands dynamic loads. The cup tip ensures precise contact with shafts or collars, reducing fretting and maintaining alignment in assemblies. Combined with Rockwell C45 hardness, it offers a dependable solution for securing gears, pulleys, and other rotating components, minimizing downtime and maintenance costs in demanding industrial environments.
Specification Summary & Compliance
This set screw features precise 3/4"-10 UNC coarse threads with Class 3A fit for tight tolerances and optimal performance. It adheres to ASME B18.3 and ASTM F912 manufacturing specifications, ensuring dimensional accuracy and mechanical integrity. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting safe and environmentally responsible usage in global markets.
