#44 Drill Bit Size
A #44 drill bit is 0.0860 inches or 2.18 mm. It falls between 5/64 inch and 3/32 inch, with 3/32 inch slightly larger.
Quick Answer
Decimal
0.0860 in
Metric
2.18 mm
Closest
3/32 inch
#44 Drill Bit Equivalent Chart
| Size | Decimal Inches | Metric | Note |
|---|---|---|---|
| #44 | 0.0860 in | 2.18 mm | Exact size |
| 3/32 inch | 0.0938 in | 2.38 mm | Common fractional oversize |
| 5/64 inch | 0.0781 in | 1.98 mm | Common fractional undersize |
| 2.2 mm | 0.0866 in | 2.20 mm | Nearby metric size |
Common Uses
Small tap holes, instrument work, and light machine-screw drilling.
Exact vs Nearest Size
Choose the exact bit for threads, tight hardware fits, dowels, and precision layouts. Use the nearest common equivalent only for rough pilot holes, clearance holes, or material removal where a slight difference is acceptable.
#44 Drill Bit FAQ
What are the inch and metric dimensions for #44?
#44 drill bit measures 0.0860 in and 2.18 mm.
What is the closest common equivalent to #44?
3/32 inch is the closest common equivalent listed here. It measures 0.0938 in or 2.38 mm.
Can I substitute another bit for #44?
Use the exact bit size for tap drilling, precision holes, dowels, and manufacturer-specified hardware. A nearby fractional, metric, numbered, or letter drill bit is usually fine only for clearance holes or rough pilot holes.