Shop micro carbide drill bits in individual sizes from approximately .004" to .295" for PCB drilling, circuit boards, CNC work, plastics, composites, electronics prototyping, model making, and precision small-hole drilling.
This collection is organized into size-range listings so you can choose the exact carbide drill diameter you need. These small solid carbide drills are commonly used as PCB drill bits, circuit board drills, miniature CNC drills, and precision drills for small holes where standard drill sizes are too large.
Most drills have a standard 1/8" shank for common PCB drill holders, CNC collets, rotary-tool accessories, and precision drilling setups. Use the product listings below to select individual drill sizes by diameter range.
Common Uses
- PCB drilling and circuit board drilling
- Electronics prototyping and repair work
- CNC drilling of small holes
- Plastics, composites, fiberglass, and suitable non-metallic materials
- Model making, hobby work, and precision small-hole drilling
- Carburetor jet checking, cleaning, and careful resizing when the correct size is selected
Choosing Individual Drill Sizes
Use the product listings below to choose individual carbide drill sizes by diameter range. This collection may also include break-resistant carbide drill options, one-size resharpened drill quantities, and overstock individual-size drill specials when available.
Important Use Notes
- Micro carbide drills are hard and accurate, but they are also brittle.
- Use a stable setup and keep the drill straight to avoid bending or side-loading.
- For the smallest sizes, avoid handheld electric drills and use a pin vise, drill press, PCB drill holder, CNC machine, or other controlled setup.
- Use light pressure and appropriate speed/feed settings for the material being drilled.
Looking for a range of drill sizes instead?
Browse carbide drill variety sets, including metric, fractional, incremental, one-size, and larger assortment sets: view carbide drill variety sets →
