S-99553A220 8-32 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 in harsh environments due to 316 stainless steel construction
- Precise thread engagement with Class 3A fit for reliable, vibration-resistant fastening
- High mechanical strength maintained through Rockwell B80 hardness rating
- Space-saving headless design with hex drive for flush mounting in confined spaces
- Easy installation and removal using standard 5/64" hex tools
- Secure component positioning with oval tip design for minimal surface damage
- Industry-standard compliance with ASME B18.3 specifications for guaranteed performance
Professional Applications & Engineering Value
These 316 stainless steel set screws deliver exceptional performance in demanding applications where corrosion resistance and mechanical reliability are critical. The headless hex drive design provides flush mounting capabilities for machinery, marine equipment, and chemical processing systems where protrusions are problematic. Featuring 8-32 UNC coarse threads with Class 3A fit, these fasteners ensure secure positioning of gears, pulleys, and collars on shafts while resisting loosening under vibration. The oval tip configuration minimizes surface damage while maintaining strong clamping force, making them ideal for precision assemblies requiring repeated adjustments. Their Rockwell B80 hardness provides the perfect balance between strength and machinability for long-term service in industrial environments.
Specification Summary & Compliance
This set screw features precise 8-32 UNC coarse threads with Class 3A thread fit tolerance, ensuring consistent performance across industrial applications. Manufacturing complies with ASME B18.3 specifications for dimensional accuracy and mechanical properties. The product meets RoHS 3 (2015/863/EU) compliance for restricted substances and REACH (EC 1907/2006) regulations (updated 06/14/2023 235 SVHC), making it suitable for global industrial markets with strict environmental requirements.
