API Internal Flush
Hughes & Reed I.F.
| Size | A | B | C | D | E | F | G | H | K |
|---|---|---|---|---|---|---|---|---|---|
| 2 3/8 | 3 | 3 3/8 | 2 7/8 | 2 3/8 | 2 15/16 | 3 3/8 | 1 3/4 | 4 | 2 |
| 2 7/8 | 3 1/2 | 4 1/3 | 3 25/64 | 2 13/16 | 3 29/64 | 3 7/8 | 2 1/8 | 4 | 2 |
| 3 1/2 | 4 | 4 3/4 | 4 1/64 | 3 11/32 | 4 5/64 | 4 3/8 | 2 11/16 | 4 | 2 |
| 4 | 4 1/2 | 5 3/4 | 4 33/64 | 4 5/64 | 4 11/32 | 4 7/8 | 3 1/4 | 4 | 2 |
| 4 1/2 | 4 1/2 | 6 1/8 | 5 1/4 | 4 1/2 | 5 5/16 | 4 7/8 | 3 3/4 | 4 | 2 |
| 5 1/2 | 5 | 7 3/8 | 6 25/64 | 5 3/16 | 6 29/64 | 5 3/8 | 4 13/16 | 4 | 2 |
