In the early 1930s, the Phillips head screw was invented by Henry Phillips.
Automobile manufacturers now used car assembly lines.
A power tool that does the same job is a power screwdriver.
The hand-tool for driving cap screws and other types is called a spanner (U.
This page and associated sub-pages allows a user to run an American produced utilitarian bottle or a significantly sized bottle fragment through a series of questions based primarily on diagnostic physical, manufacturing related characteristics or features to determine the approximate manufacturing age range of the item.a device used for fastening materials together, consisting of a threaded and usually tapered shank that has a slotted head by which it may be rotated so as to cut its own thread as it bores through the material The use of this otherwise utilitarian word in a sexual sense, though recorded in an 18th century slang dictionary, does not appear to have really taken off until well into the 20th.