brass drift vent.

[teylora]

Пожалуйста, помогите перевести brass drift:

Place a brass drift against the lock nut and strike the drift repeatedly. Evenly distribute the blows by rotating the fan shaft between strikes. This procedure drives the inner ring farther up on the adapter sleeve and releases pressure on the threads.
(это пункт из инструкции по монтажу)
Спасибо.

[teylora]

латунное долото не подойдёт?

[Speaker]

выколотка