S-91375A073 2-56 x 3/32" 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 on alloy steel, extending service life in harsh industrial environments
- Exceptional holding power achieved through Rockwell C45 hardness, preventing deformation under high torque applications
- Precise Class 3A thread fit ensures tight tolerances and reliable fastening in critical assemblies
- Secure hex drive installation with 0.035" drive size providing positive torque transmission and reduced cam-out risk
- Optimized cup tip design creates concentrated contact pressure for maximum grip on shaft components
- Right-hand coarse UNC threads enable quick installation and high resistance to vibrational loosening
- Compact headless construction allows flush mounting in space-constrained applications
Professional Applications & Engineering Value
Engineered for precision industrial applications, this 2-56 UNC set screw delivers critical performance where space optimization and vibration resistance are paramount. The black-oxide alloy steel construction provides essential corrosion protection while maintaining the Rockwell C45 hardness required for repeated torque applications. The hex drive design ensures reliable installation in confined spaces, while the cup tip configuration maximizes surface contact for superior shaft positioning in pulleys, gears, and collars. These headless set screws are particularly valuable in precision machinery, automotive assemblies, and electronic enclosures where flush mounting and Class 3A thread fit prevent component misalignment and maintain dimensional integrity under dynamic loads.
Specification Summary & Compliance
This 2-56 UNC set screw features precise Class 3A thread fit tolerances with coarse thread spacing and right-hand thread direction. Manufacturing complies with ASME B18.3 specifications where identified under ASTM F912. The product meets RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) standards regarding substance restrictions, ensuring environmental regulatory adherence for industrial applications.
