Two pieces of steel, screwed one end
1790-1819
Two pieces of steel, screw one end fixed in two circular pieces of brass
1790-1819
53 screws, various sizes
1790-1819
83 screws
1790-1819
24 Screws, various sizes
1790-1819
Six large screws, various sizes
1790-1819
22 Screws, various sizes
1790-1819
Three screwed eyes
1790-1819
29 Screws, various sizes
1790-1819
Demainbray's Archimedean screw
1752
One screw
1790-1819
38 Screws, various sizes
1790-1819
Two sash screws, brass knobs
1790-1819
Two brass headless screws
1790-1819
Component of Model Platen Printing Press no.1 patented 1877
1877
Four brass wood-screws for synchronous motor driven clock movement, England, 1940-1953
1940-1953
Metal screw for Electro-convulsive therapy (ECT) equipment
A wood screw illustrating the Sherardizing process.
Metal and plastic screw for HP Envy 34inch curved display monitor
2017
Metal and plastic screw for HP Envy 34inch curved display monitor
2017
Unpointed woodscrew, 1850-1855
1850-1855
Unpointed woodscrew, 1850-1855
1850-1855
Pan-head machine screw, for Beardmore Heavy Oil diesel engine, from Airship R. 101
1928
Small screw from ivory plotting scale
Screw for hand operated water pump
circa 1850-1890
Screw for hand operated water pump
circa 1850-1890
Bolts and Screws for Fridge used in conjunction with mechanical tree prototype, 2017
2017
Feet and Screws for Storage Oscilloscope
1970-1980
Retaining bolt for Hindu astrolabe
1870
Component of Model Platen Printing Press no.1 patented 1877
1877
Screw for employee attendance time recorder
1901-1933
A wood screw illustrating the Sherardizing process.
A wood screw illustrating the Sherardizing process.
A wood screw illustrating the Sherardizing process.
A wood screw illustrating the Sherardizing process.
Screw with indented metal fixings
Metal and plastic screw for HP Envy 34inch curved display monitor
2017
Metal and plastic screw for HP Envy 34inch curved display monitor
2017
Unpointed woodscrew, 1850-1855
1850-1855
Unpointed woodscrew, 1850-1855
1850-1855
Unpointed woodscrew, 1850-1855
1850-1855
2 movement screws for the electric clock
1845-1847
Screw and nut associated with the 3-foot geodetic theodolite
1791
Screw for hand operated water pump
circa 1850-1890
Screw for hand operated water pump
circa 1850-1890
Eight brass screws from the 3-foot geodetic theodolite
1791
Screws from the electronic payment terminal
1990-1998
Screws from triple bodied microscope attributed to C.D. Ahrens
1860-1880
Working model, of a link drive for screw shafts, used to adapt paddle wheel engines
1850-1862
Two small brass screws
1790-1819