S-91375A876 7/8"-9 x 1 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
- Superior corrosion resistance with black-oxide coating, extending service life in harsh industrial environments.
- Exceptional holding power provided by the cup point tip, which bites securely into shafts and components to prevent slippage.
- High-strength performance from alloy steel and a Rockwell C45 hardness, ensuring reliability under heavy loads and vibration.
- Precise and secure fastening with Class 3A thread fit, offering tighter tolerances for high-stakes assemblies.
- Easy installation and removal using the 1/2" hex drive, allowing for high torque application with standard tools.
- Broad industrial compatibility due to 7/8"-9 UNC coarse threads, facilitating quick assembly and disassembly.
- Regulatory peace of mind with compliance to major industry and environmental standards like ASME B18.3, RoHS, and REACH.
Professional Applications & Engineering Value
This black-oxide alloy steel set screw is engineered to solve critical challenges in power transmission and machinery assembly. The cup point design creates a permanent, non-slip grip on shafts, pulleys, and gears, effectively resisting loosening from vibration—a common failure point in dynamic systems. Manufactured from high-grade alloy steel and heat-treated to a Rockwell C45 hardness, it provides the necessary tensile strength for heavy-duty applications without compromising on durability. The UNC coarse thread and Class 3A fit ensure rapid installation and a precise, secure fit, making it an ideal choice for maintenance, manufacturing, and OEM equipment where reliability is non-negotiable.
Specification Summary & Compliance
This set screw adheres to a Class 3A thread fit for superior dimensional accuracy and meets the ASME B18.3 specification where identified by ASTM F912. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for global industrial supply chains.
