Internal Thread Minor Diameter Calculator
This table will also include some placeholder columns for potential additional details like thread type or specific standards (e.g., ISO, ANSI) which might be relevant in practical scenarios.
Here’s an example table structure for internal thread minor diameter calculations:
| Nominal Diameter (mm) | Pitch (mm) | Thread Type | Standard | Minor Diameter (mm) |
|---|---|---|---|---|
| 10 | 1.5 | M | ISO | 8.5 |
| 12 | 1.75 | M | ISO | 10.25 |
| 16 | 2.0 | M | ISO | 14.0 |
| 20 | 2.5 | M | ISO | 17.5 |
| 24 | 3.0 | M | ISO | 21.0 |
Table Columns Explained:
- Nominal Diameter (mm): This is the basic diameter of the screw or bolt, indicating the size of the thread. This diameter is typically used in naming the screw (e.g., M10 for a 10 mm diameter).
- Pitch (mm): The distance between thread peaks in millimeters. This is crucial for both manufacturing and fitting.
- Thread Type: This could be ‘M’ for metric, ‘UNC’ for coarse threads, or ‘UNF’ for fine threads in imperial measurements, depending on the standard.
- Standard: Refers to the threading standard, such as ISO, ANSI, or others, which dictates the thread profile and other critical dimensions.
- Minor Diameter (mm): Calculated by subtracting the pitch from the nominal diameter. This is the diameter at the bottom of the internal thread.