A locknut is a nut that is screwed on the base of a threaded connection. The tension created in the thread when tightening the nut prevents the connection from loosening.
| Size, G | 1/2″ | 3/4″ | 1″ |
| Weight, g | 27 | 32 | 41 |
| A, mm | 6,5 | 7 | 7,5 |
| Body material | Brass CW617N (uncoated / nickel-plated) | ||