S-91375A249 10-24 x 1 1/4" 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
- Exceptional holding power with Class 3A thread fit for secure, vibration-resistant fastening in demanding applications
- Superior corrosion resistance thanks to the black-oxide finish on alloy steel, extending service life in harsh industrial environments
- High strength and durability from Rockwell C45 hardness, preventing deformation under heavy loads
- Secure, non-slip engagement with the cup tip design, providing excellent grip on shafts and components
- Easy installation and removal using a standard 3/32" hex key, saving time during assembly and maintenance
- Reliable coarse UNC threading for quick assembly and strong holding in a wide range of materials
- Flush, space-saving design as a headless set screw, ideal for applications where protruding fasteners are not feasible
Professional Applications & Engineering Value
This 10-24 UNC set screw is engineered to solve critical challenges in power transmission, machinery, and precision equipment assembly. The black-oxide alloy steel construction resists rust and wear, while the Class 3A thread fit ensures tight tolerances for minimal backlash and secure positioning of gears, pulleys, and collars. The cup tip bites firmly into shafts, preventing rotational slip even under high torque or vibration. With a coarse thread and right-hand direction, it offers rapid installation and robust performance in industrial set screw applications, from conveyor systems to motor mounts, enhancing operational reliability and reducing maintenance downtime.
Specification Summary & Compliance
This set screw adheres to ASME B18.3 and ASTM F912 specifications, ensuring dimensional accuracy and manufacturing consistency. The UNC coarse thread with Class 3A fit provides precise thread engagement, while the 1-1/4" length and 0.19" thread diameter meet inch-system requirements. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and material sustainability for global industrial use.
