Parametric Families of Parts, and Tabulations of Part Numbers With Parameter Values
Often machinery design requires a set of variations on a common theme. In such cases, a single drawing may include a tabulation, in which each row represents one of the part numbers, and each column provides a parameter value for it. A simple example might be for a family of screws:
| Dash number | Length | Thread size | Drive style |
|---|---|---|---|
| -1 | 10mm | M6 | Philips |
| -2 | 15mm | M7 | Slotted |
| -3 | 20mm | M8 | Socket hex |
Another common application of tabulation of parametric part families is in bushing design:
| Dash number | Length | Outer diameter | Inner diameter |
|---|---|---|---|
| -1 | 10mm | 10mm | 8mm |
| -2 | 15mm | 10mm | 8mm |
| -3 | 20mm | 12mm | 10mm |
Read more about this topic: Part Number
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