S-92991A581 5/16"-18 x 3/4" 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 brass construction, ideal for harsh environments and electrical applications
- Exceptional thread precision with Class 3A fit ensures reliable, vibration-resistant fastening in critical assemblies
- Optimized torque transmission through 5/32" hex drive prevents stripping and enables secure installation
- Enhanced gripping power from cup tip design provides concentrated contact pressure for permanent component positioning
- Consistent mechanical performance with Rockwell B55 hardness balancing durability with machinability
- Wide industrial compatibility through UNC coarse threading for quick assembly and reduced cross-threading risks
- Headless design allows flush mounting in confined spaces while maintaining full thread engagement
Professional Applications & Engineering Value
This brass set screw delivers critical advantages in precision mechanical systems where corrosion resistance and electrical conductivity are paramount. The UNC coarse thread configuration combined with Class 3A thread fit provides exceptional holding strength in soft materials and prevents loosening under vibration, making it ideal for industrial machinery, electrical enclosures, and marine equipment. The cup tip design concentrates force on a small contact area, creating permanent positioning for gears, pulleys, and collars without damaging shaft surfaces. Manufactured to ASME B18.3 specifications, this headless fastener ensures reliable performance in space-constrained applications where traditional fasteners cannot be used.
Specification Summary & Compliance
This precision set screw features 5/16"-18 UNC coarse threads with Class 3A thread fit for superior dimensional accuracy. The 3/4" length and 5/32" hex drive provide standardized installation compatibility. Manufacturing complies with ASME B18.3 specifications for dimensional consistency and mechanical properties. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring restricted substance compliance for global industrial applications.
