[10000 BULK] Thread Rolling Screws Phillips Flat Head Steel Black Oxide & Waxed Tri-Lobe #4-40 X 3/8 Taptite Screws Alternative

★★★★★ 4.3 66 reviews

US$91.30
Price when purchased online
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US$91.30
Price when purchased online
Free shipping Free 30-day returns

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Product details

Management number 242074807 Release Date 2026/07/19 List Price US$91.30 Model Number 242074807
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Introduce reliability and strength to your assemblies with our Thread Rolling Screws, Phillips Flat Head in steel, finished with black oxide and waxed coating. This Tri-Lobe drive screw in #4-40 x 3/8" serves as a robust alternative to Taptite screws, delivering secure, high-torque threads without stripping.

  • Drive type: Tri-Lobe for improved torque transfer and reduced slippage
  • Thread form: Thread rolling (thread-forming) screw that forms its own threads in pre-piloted holes
  • Head style: Phillips flat head for flush, low-profile seating
  • Material & finish: Steel with black oxide finish and waxed coating for corrosion resistance and smooth driving
  • Size & length: #4-40 thread, 3/8" long
  • Alternative to: Taptite screws

Ideal for securing components in metal, wood, or composite assemblies where a clean flush appearance and reliable thread engagement are essential.

  • Waxed coating reduces friction during installation
  • Black oxide finish adds durability in challenging environments
  • Thread-forming action creates secure, vibration-resistant joints
  • Resistance to thread stripping and loosening with proper pilot hole
  • Corrosion resistance
  • Easy to install with common Phillips screwdrivers

Equip your toolkit with this reliable thread rolling screw and experience a solid, professional fit in your next project. Add to cart now for steady performance and a clean, professional look.


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