11/32 inch Drill Bit Size
An 11/32 inch drill bit is 0.3438 inches or 8.73 mm. It is commonly used as an oversize alternative near 8.5 mm.
Quick Answer
Decimal
0.3438 in
Metric
8.73 mm
Closest
8.5 mm
11/32 inch Drill Bit Equivalent Chart
| Size | Decimal Inches | Metric | Note |
|---|---|---|---|
| 11/32 inch | 0.3438 in | 8.73 mm | Exact size |
| 8.5 mm | 0.3346 in | 8.50 mm | Nearby metric size |
| R | 0.3390 in | 8.61 mm | Nearby letter drill size |
| 21/64 inch | 0.3281 in | 8.33 mm | Smaller fractional option |
Common Uses
Medium-large clearance holes and general drilling where a slightly oversized hole is acceptable.
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.
11/32 inch Drill Bit FAQ
What are the inch and metric dimensions for 11/32 inch?
11/32 inch drill bit measures 0.3438 in and 8.73 mm.
What is the closest common equivalent to 11/32 inch?
8.5 mm is the closest common equivalent listed here. It measures 0.3346 in or 8.50 mm.
Can I substitute another bit for 11/32 inch?
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.