Drill Bit Dimensions Chart - ANSI Standard
This chart provides ANSI standard dimensions for drill bits. It covers drill bit sizes from 1-15/32 to 3-1/2 inches, including diameter, flute length, and overall length.
Technical Specifications
Overview
ANSI Standard Drill Bit Reference
This comprehensive dimensions chart provides essential ANSI standard specifications for large-diameter drill bits. Designed for professional machining and engineering environments, it covers a wide range of sizes from 1-15/32 to 3-1/2 inches. The data includes critical measurements such as decimal equivalents, flute lengths, overall lengths, and taper shank designations to ensure precise tool selection and setup.
Technical Specifications
Standards
ANSI
- Size Range
- 1-15/32 to 3-1/2 inches
- Taper Shank Sizes
- 456
Dimensions Reference
Drill Bit Dimension Chart
| Size (Fraction) | Decimal | Flute Length (in) | Overall Length (in) | Taper Shank # |
|---|---|---|---|---|
| 1-15/32 | 1.469 | 9-1/4 | 14-7/8 | 4 |
| 1-1/2 | 1.5 | 9-3/8 | 15 | 4 |
| 1-3/4 | 1.75 | 10-1/8 | 17-1/8 | 5 |
| 2 | 2 | 10-3/8 | 17-3/8 | 5 |
| 2-1/2 | 2.5 | 11-1/4 | 18-3/4 | 5 |
| 3 | 3 | 14 | 21-3/4 | 5 |
| 3-1/2 | 3.5 | 15-1/2 | 25-1/2 | 6 |
