The Production of Roman Metal Screw Threads

Abstract

The production of Roman screws and screw threads is a topic that is largely absent in the archaeological literature. During the Roman period, small metal screw threads were used both as fastenings and to impart motion. This paper will show that it is possible to produce small metal screw threads using very simple technology that was well within the skill set of any competent metal worker. Using experimental techniques showed that small metal screw threads can be produced by semi- and unskilled labour in a timeframe that makes their production economically viable. Low visibility in the archaeological record has led to the erroneous assumption that the Romans did not use small metal screw threads.

Keywords

• tools
• metal
• roman era
• italy