S-92311A322 4-48 x 3/16" 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 18-8 stainless steel construction, ideal for harsh industrial environments
- Exceptional holding power provided by the cup point tip design that bites securely into shafts and components
- Precise thread engagement with Class 3A fit and UNF fine threads for vibration resistance in critical assemblies
- Easy installation and removal using the 0.050" hex drive, even in confined spaces due to headless design
- Consistent mechanical performance ensured by Rockwell B80 hardness for reliable torque transmission
- Reduced maintenance requirements through compliant manufacturing meeting RoHS 3 and REACH regulations
- Interchangeable reliability with ASME B18.3 specification compliance for consistent dimensional accuracy
Professional Applications & Engineering Value
This 4-48 UNF Class 3A set screw delivers exceptional engineering value in precision assembly applications where vibration resistance and secure positioning are critical. The 18-8 stainless steel construction provides excellent corrosion resistance for demanding environments, while the cup point design creates permanent seating in shafts, pulleys, and collars without slipping. The fine thread spacing of the UNF thread form ensures superior clamping force distribution, making it ideal for precision instruments, aerospace components, and medical devices where minimal backlash is required. The hex drive headless configuration allows for flush mounting in space-constrained applications while maintaining high torque capability during installation.
Specification Summary & Compliance
This set screw maintains Class 3A thread fit tolerances per UNF standards with precise 4-48 thread size and 0.112" thread diameter. Manufacturing complies with ASME B18.3 specifications for dimensional accuracy and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and workplace safety. The Rockwell B80 hardness provides consistent mechanical properties throughout the fastener's service life.
