supply of stud bolt, with nut, mat spec, stud bolt(s) en 10269 grade 20crmovtib4-10, mat spec, nut(s) en 10269 grade 20crmovtib4- 10, size 1 in, length 170 mm, design spec, stud bolt ansi b18.2.1, design spec, nut ansi b18.2.2, thread class symbol, stud b