Exactly…..much cheaper than buying forged/rated eyebolts for every thread pitch.^^ ahhh... THAT'S what those were made up for, eh?
Yes, they are used for making adjustments on Detroit diesels.
Yes they are used to make height adjustments on Detroit Diesels.
For Detroit engines
Bottom ones are for setting Detroit injectors. 60 series i think? (Been a while. Maybe for older as well, I've not worked on them)
Detroit 2 cycle injectors, 1.484, 1.470, 1.500, 1.460 once in a great while on stationary engines 1.496 were the most popular.

Series 60 are longer and have metric measurements on them.Bottom ones are for setting Detroit injectors. 60 series i think? (Been a while. Maybe for older as well, I've not worked on them)
Top ones look to be modified ones.
The topish left in the pic, 3 zinc chromate bolts are brake can caging bolts.
