External nuts are used with external fittings such as ECEF column end fittings, EZRU reducing unions, and EU unions. They may also be used with Valco ferrules on Parker CPI and Swagelok type fittings. Standard material is 300 series stainless.
| Size | Product No. | |
|---|---|---|
| 1/32" | Hex | EN.5 |
| Knurled | EN.5KN | |
| 1/16" | EN1 | |
| 1/8" | EN2 | |
| 1/4" | EN4 | |
| 3/8" | EN6* | |
| 1/2" | EN8* | |
| 1" | EN1K* | |
* Available as special-order items
