Screw threads

That is nuts & bolt, not wood screws

Details	Dates	Notes
First screw cutting machine	1586
First screw cutting machine (more than 10/min)	1760
Cutting of interchangeable threads	1797	Henry Maudslay
Very first hex nuts on lathe	1830	James Nasmith
Standard threads	1841	Whitworth
Cheap steel	Between 1856 & 1876	Henry Bessemer
Mass production of threads	1870
Cold heading machines mass produce hex nuts	1880