S-91375A174 3-56 x 3/8" 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
- Precise thread engagement with Class 3A fit UNF fine threads ensuring reliable, vibration-resistant fastening
- High-strength performance backed by Rockwell C45 hardness for exceptional load-bearing capacity
- Secure installation with hex drive design providing positive torque transmission and slip-resistant operation
- Space-saving headless construction allowing flush mounting where clearance is limited
- Effective component positioning with cup tip design that maintains consistent pressure on mating surfaces
- Regulatory compliance assurance meeting ASME B18.3 specifications for dimensional accuracy and performance
Professional Applications & Engineering Value
This 3-56 UNF set screw delivers critical engineering solutions for precision assembly applications where space constraints and vibration resistance are paramount. The black-oxide alloy steel construction provides exceptional corrosion protection while maintaining the Rockwell C45 hardness required for high-stress applications. The headless design with hex drive enables installation in confined spaces while ensuring maximum torque application. Class 3A thread fit with UNF fine threads creates superior clamping force retention in machinery, automotive components, and precision instruments, preventing loosening under dynamic loads. The cup tip configuration offers optimal surface contact for secure component positioning without damaging mating surfaces.
Specification Summary & Compliance
This set screw features precision 3-56 UNF fine threads with Class 3A fit for tight tolerance applications. Manufactured to ASME B18.3 specifications ensuring dimensional accuracy and performance reliability. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making it suitable for global industrial applications requiring strict chemical substance control.
