| Subject | English | Russian |
| non-destruct.test. | drunken thread is a thread in which the advance of the thread helix is irregular | "пьяной" называется резьба с неравномерным шагом винтовой линии |
| mech. | thread helix | нитка резьбы (A continuous spiral or single "loop" formed by the thread along the surface of the screw. DRE) |
| automat. | thread helix | винтовая линия резьбы |
| automat. | thread helix angle | угол подъёма резьбы (ssn) |