Harry Brearley
Harry Brearley (18 February 1871 – 14 July 1948) was an English metallurgist, usually credited with the invention of "rustless steel" (later to be called "stainless steel" in the anglophone world).
Speed nut
The speed nut was invented in 1936 by Albert H. Tinnerman, son of George Tinnerman, who founded Tinnerman Steel Range Company. Tinnerman invented the nut to resolve issues with stove shipping. The invention was so successful it led the company away from building stoves to building fasteners.
Tinnerman Products evolved from the speed nut development with manufacturing plants in Cleveland, Ohio. A modern manufacturing plant was constructed on Brookpark Road in the mid-1950s. Tinnerman Products was later acquired by Eaton Yale & Towne (Eaton Corporation).