1 The two heads are four inches in length, one inch of which is provided with a screw thread .
2 The larger portion is about twice as thick as the smaller, to allow room for the screw threads .
3 She fished out a short metal bracket drilled with four holes, a scorched screw threaded through each hole.
4 After a year in use the tubes can be unscrewed with ease, and the screw threads are perfectly smooth.
6 The screw threads should be filled with fireclay (as recommended by Faraday) before the joint is screwed up.
7 A screw may be turned into hardwood easily, by boring a small hole and lubricating the screw threads with soft soap.
8 A hybrid denture is one that is fabricated over a metal framework and retained by screws threaded into the implant abutments.
9 18 a screw thread tool, and Fig.
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Translations for screw thread