S-91375A095 3-48 x 5/16" 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 demanding industrial environments
- Exceptional holding power achieved through Rockwell C45 hardness, preventing deformation under high torque loads
- Precise Class 3A thread fit ensures tight tolerances for secure fastening in critical applications
- Easy installation and removal with 0.050" hex drive design, reducing assembly time and tool wear
- Reliable cup tip design provides concentrated contact pressure for maximum grip on shaft components
- Compliance with major regulations including RoHS 3 and REACH, ensuring environmental and safety standards
- Headless construction allows for flush mounting in space-constrained applications
Professional Applications & Engineering Value
This 3-48 UNC set screw delivers exceptional engineering value in precision assembly applications where vibration resistance and positional security are critical. The black-oxide alloy steel construction provides superior protection against corrosion while maintaining the Rockwell C45 hardness needed for repeated tightening cycles. The hex drive design ensures reliable torque transmission without cam-out, particularly valuable in automated assembly lines. The cup tip configuration concentrates force on a small contact area, creating permanent seating marks that prevent axial movement in pulleys, gears, and collars. Meeting ASME B18.3 specifications, these headless set screws are engineered for precision machinery, automotive components, and industrial equipment where space optimization and reliable clamping force are paramount.
Specification Summary & Compliance
This set screw features 3-48 UNC coarse threads with Class 3A fit for precision tolerance, measuring 0.099" in diameter and 5/16" in length. Manufactured to ASME B18.3 specifications with right-hand threading and cup tip configuration. The component is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global industrial markets.
