Use this checklist to specify the information needed for Unified National Fine Pitch Threads. It provides enquiry guidance; obtain numerical data and acceptance limits from the applicable standard, approved procedure or verified chart.
| Item | Details |
|---|---|
| Topic | Unified National Fine Pitch Threads |
| Thread designation | Specify the thread system, nominal diameter and pitch or threads per inch. |
| Fit and form | Identify thread class or tolerance, internal or external form, handedness and engagement length. |
| Reference | State the required standard and edition; confirm the correct series before selecting tabulated values. |
| Drawing details | Include units, dimensional tolerances and any special thread or inspection requirements. |
