S-91375A749 0-80 x 1/4" ASME B18.3 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 demanding environments
- Precise thread engagement with Class 3A fit ensuring reliable, vibration-resistant fastening in critical assemblies
- High-strength performance backed by Rockwell C45 hardness for consistent load-bearing capability
- Space-saving headless design enabling flush mounting where clearance is limited
- Secure hex drive installation with 0.028" drive size providing positive torque transmission
- Optimized fine thread grip with UNF 0-80 configuration for enhanced holding power in thin materials
- Regulatory compliance assurance meeting ASME B18.3, RoHS 3, and REACH standards for global applications
Professional Applications & Engineering Value
This 0-80 UNF set screw delivers exceptional engineering value in applications requiring compact, high-strength fastening solutions. The black-oxide alloy steel construction provides superior corrosion protection while maintaining the material's inherent strength characteristics. The Class 3A thread fit ensures precise mating with corresponding UNF internal threads, eliminating play and reducing the risk of vibration-induced loosening in precision machinery, electronic enclosures, and automotive components. The headless design with cup tip concentrates clamping force effectively, making it ideal for securing collars, gears, and pulleys on shafts where traditional fasteners would interfere with adjacent components. With fine thread spacing and Rockwell C45 hardness, this fastener maintains its mechanical properties under repeated assembly cycles and operational stresses.
Specification Summary & Compliance
This set screw features 0-80 UNF fine threads with Class 3A thread fit for precision applications, manufactured to ASME B18.3 specifications. The 1/4" length and 0.06" thread diameter provide standardized dimensional consistency. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental responsibility and global market acceptance.
