The KTC Stainless HSS Tapping Drill Bit Set is designed for users who need to drill holes and cut internal machine threads efficiently. Each combination bit performs two operations: drilling a pilot hole and tapping the hole to create a matching metric thread.
The set includes six commonly used metric sizes: M3, M4, M5, M6, M8 and M10. Made from high-speed steel (HSS), the bits are intended for metalworking tasks where the material and tool specifications are compatible.
The 1/4-inch hex shank allows the bits to fit standard compatible drill chucks and hex-bit holders. Use a suitable speed, cutting lubricant and properly aligned workpiece to help improve thread quality and extend tool life.
This set is suitable for workshops, maintenance teams, fabrication work and DIY projects requiring metric threaded holes.
Key Features
- 6-Piece Set: Includes M3, M4, M5, M6, M8 and M10 sizes.
- Combination Drill and Tap Design: Drills and cuts internal threads in one operation.
- High-Speed Steel Construction: Designed for compatible drilling and tapping applications.
- 1/4-Inch Hex Shank: Fits compatible power drills and hex-bit holders.
- Metric Thread Sizes: Covers a range of common machine-threading requirements.
- Workshop Versatility: Useful for fabrication, repair, equipment maintenance and assembly work.
- Time-Saving Design: Reduces the need to switch between separate drilling and tapping tools.
Applications
- Creating internal metric threads in suitable metals
- Metal fabrication and workshop assembly
- Equipment repair and maintenance
- Threaded-hole preparation for machine screws and bolts
- DIY metalworking projects
- General mechanical and engineering tasks
Technical Specifications
| Specification | Details |
|---|---|
| Brand | KTC |
| Product Type | Combination Drill and Tap Bit Set |
| Quantity | 6 Pieces |
| Material | High-Speed Steel (HSS), as specified |
| Included Sizes | M3, M4, M5, M6, M8, M10 |
| Thread System | Metric |
| Shank Type | Hex shank |
| Shank Size | 1/4 inch |
| Compatible Tools | Compatible power drills and hex-bit holders |
| Primary Function | Drilling and internal thread tapping |
| Exact HSS Grade | Not provided |
| Stainless Steel Compatibility | Confirm the manufacturer’s specifications before use |
Why Choose the KTC Drill and Tap Set?
The KTC 6-piece set offers a practical way to handle common metric threading tasks using combination bits. Its range of sizes and 1/4-inch hex shanks make it a useful accessory set for metalworking, maintenance and assembly applications.
Usage & Safety Notes
- Confirm the material is suitable for the selected bit and use the correct pilot-hole/thread specification.
- Secure the workpiece firmly before drilling or tapping.
- Use cutting fluid where appropriate to reduce heat and improve cutting performance.
- Apply controlled speed and pressure; avoid forcing the bit if it binds.
- Check the tool manufacturer’s guidance before using these bits with an impact driver, as impact action may damage tapping bits or threads.
- Wear safety glasses and keep hands clear of rotating tools.
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