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While at Tech school ( 1971 ) machine professor has wooden crates full of nuts/bolts/fittings ASE/USS/Weather head/metric, we had to know them all by sight to pass.
IE 3/8 coarse x 1.5" grade 8 right hand thread,
Also has to read a cam when handed to you, which lobe was intake and exhaust and direction of rotation.
Had to torque a head bolt in a bare block, then he came around with a big *** mal and broke off the bolt. You t without damaging the threads. After you were done he re torqued a new head bolt in the block, it had to hold so the block was not junk.
When I asked if we had to tell Him what size wrench it took also , he said " No , that was between you and GOD "