Overview
The Du-Bro 4-40 Tap & Drill Set takes the guesswork out of threading by pairing a perfectly matched 4-40 tap with the correct-size drill bit. Tapping clean, accurate threads in metal, plastic, and composite parts becomes effortless when the tap and drill are sized to work together.
Ideal for RC builders who frequently work with 4-40 hardware — engines, landing gear, motor mounts, and more.
Key Features
- Matched 4-40 tap and drill bit
- Eliminates tap-drill size confusion
- High-quality cutting edges
- Trusted Du-Bro quality
Performance Benefits
- Clean, accurate 4-40 threads every time
- Saves time and reduces errors
- Works on metal, plastic, and composite
Usage Notes
- Drill the pilot hole first using the matched bit
- Use cutting fluid for smoother tapping in metal
- Back the tap out periodically to clear chips
Technical Specs
What's Included
- (1) 4-40 Tap
- (1) Matching Drill Bit
Summary
- Matched 4-40 tap and drill set
- Clean, accurate threads
- Essential RC builder's tool
