A popular Unified Thread Standard for nuts and bolts is ANSI/ASME B1.1 which was defined in 1935, 1949, 1989, and 2003.
ɐ pˈɑːpjʊlɚ jˈuːnɪfˌaɪd θɹˈɛd stˈændɚd fɔːɹ nˈʌts ænd bˈoʊlts ɪz ˈænsi slˈæʃ ɐsmˈɛ bˈiː wˈʌn.wˈʌn wˌɪtʃ wʌz dᵻfˈaɪnd ɪn nˈaɪntiːnhˈʌndɹɪd θˈɜːɾi fˈaɪv, nˈaɪntiːnhˈʌndɹɪd fˈoːɹɾi nˈaɪn, nˈaɪntiːnhˈʌndɹɪd ˈeɪɾi nˈaɪn, ænd tˈuː θˈaʊzənd θɹˈiː.