

Use the tables below to find the proper part number for the female-by-female coupler that meets your needs:
| Thread Type | Connection Size (in.) | 1/4 " | 3/8 " | 1/2 " | 3/4 " | 1 " |
|---|---|---|---|---|---|---|
| NPT Female | 1/4 " | HC-NF4 HD | HC-NF6-NF4 HD | HC-NF8-NF4 HD | HC-NF12-NF4 HD | --- |
| NPT Female | 3/8 " | HC-NF6-NF4 HD | HC-NF6 HD | HC-NF8-NF6 HD | HC-NF12-NF6 HD | --- |
| NPT Female | 1/2 " | HC-NF8-NF4 HD | HC-NF8-NF6 HD | HC-NF8 HD | HC-NF12-NF8 HD | HC-NF16-NF8 HD |
| NPT Female | 3/4 " | HC-NF12-NF4 HD | HC-NF12-NF6 HD | HC-NF12-NF8 HD | HC-NF12 HD | HC-NF16-NF12 HD |
| NPT Female | 1 " | --- | --- | HC-NF16-NF8 HD | HC-NF16-NF12 HD | HC-NF16 HD |
| Thread Type | Connection Size (in.) | 1/4 " | 3/8 " | 9/16 " | 3/4 " | 1 " |
|---|---|---|---|---|---|---|
| NPT Female | 1/4 " | HC-MF4-NF4 | HC-MF6-NF4 | HC-MF9-NF4 | --- | --- |
| NPT Female | 3/8 " | HC-MF4-NF6 | HC-MF6-NF6 | HC-MF9-NF6 | --- | --- |
| NPT Female | 1/2 " | HC-MF4-NF8 | HC-MF6-NF8 | HC-MF9-NF8 | HC-MF12-NF8 | --- |
| NPT Female | 3/4 " | --- | HC-MF6-NF12 | HC-MF9-NF12 | HC-MF12-NF12 | HC-MF16-NF12 |
| NPT Female | 1 " | --- | HC-MF6-NF16 | HC-MF9-NF16 | HC-MF12-NF16 | HC-MF16-NF16 |
| Medium Pressure Female | 1/4 " | HC-MF4 | HC-MF6-MF4 | HC-MF9-MF4 | HC-MF12-MF4 | HC-MF16-MF4 |
| Medium Pressure Female | 3/8 " | HC-MF6-MF4 | HC-MF6 | HC-MF9-MF6 | HC-MF12-MF6 | HC-MF16-MF6 |
| Medium Pressure Female | 9/16 " | HC-MF9-MF4 | HC-MF9-MF6 | HC-MF9 | HC-MF12-MF9 | HC-MF16-MF9 |
| Medium Pressure Female | 3/4 " | HC-MF12-MF4 | HC-MF12-MF6 | HC-MF12-MF9 | HC-MF12 | HC-MF16-MF12 |
| Medium Pressure Female | 1 " | HC-MF16-MF4 | HC-MF16-MF6 | HC-MF16-MF9 | HC-MF16-MF12 | HC-MF16 |
| High Pressure Female | 1/4 " | HC-MF4-HF4 | HC-MF6-HF4 | HC-MF9-HF4 | HC-MF12-HF4 | HC-MF16-HF4 |
| High Pressure Female | 3/8 " | HC-MF4-HF6 | HC-MF6-HF6 | HC-MF9-HF6 | HC-MF12-HF6 | HC-MF16-HF6 |
| High Pressure Female | 9/16 " | HC-MF4-HF9 | HC-MF6-HF9 | HC-MF9-HF9 | HC-MF12-HF9 | HC-MF16-HF9 |
| Thread Type | Connection Size (in.) | 1/4 " | 3/8 " | 9/16 " |
|---|---|---|---|---|
| NPT Female | 1/4 " | HC-HF4-NF4 | HC-HF6-NF4 | HC-HF9-NF4 |
| NPT Female | 3/8 " | HC-HF4-NF6 | HC-HF6-NF6 | HC-HF9-NF6 |
| NPT Female | 1/2 " | HC-HF4-NF8 | HC-HF6-NF8 | HC-HF9-NF8 |
| NPT Female | 3/4 " | HC-HF4-NF12 | HC-HF6-NF12 | HC-HF9-NF12 |
| NPT Female | 1 " | HC-HF4-NF16 | HC-HF6-NF16 | HC-HF9-NF16 |
| High Pressure Female | 1/4 " | HC-HF4 | HC-HF4-HF6 | HC-HF4-HF9 |
| High Pressure Female | 3/8 " | HC-HF4-HF6 | HC-HF6 | HC-HF6-HF9 |
| High Pressure Female | 9/16 " | HC-HF4-HF9 | HC-HF6-HF9 | HC-HF9 |
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