- rounded countersunk head
- полупотайная головка или шлпяка; чечевицеобразная головка или шляпка
Англо-русско-английский словарь по деталям машин . Бергман В., Личак С., Панкин А., Шевчука М. и др., под ред. проф. д.т.н. Л.Д. Белькинда. 2015.
rounded countersunk head
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