Later model Chevy trucks say 1960s and probably lots of years, came with a small bracket with a short coil spring that wrapped around the jack keeping it from getting lost or rattling around. These were mounted to the floor or some place inside the cab. The '40 Chevy truck is one of my favorite body styles, enjoy.

just found this jack off a new Chevy pickup very similar to the old time jacks, these are all over ebay, check it out.
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Jack.jpg (277.72 KB, 166 downloads)

Last edited by JiMerit Boltr#43; 10/09/2021 9:44 PM.

It's easier to get forgiveness than permission!
1946 1/2-Ton Chevy
1953 Chevy 3/4-ton Factory Stakebed