The master parts book says same part # for all 1/2 ton trucks from 1929-1955.
Commercial Jack {W/ folding handle}....
Part # 3690652 Gp.# 8.820 {3000 lb. capacity}
Commercial Jack folding handle by itself...
Part # 592769 Gp.# 8.820
Although GM used the same part # from 1929-1955.... I suspect that there were changes in the actual jack that was supplied along with the tool kit over that 26 year span.
There is also a listing for 1942-1955 Utility or "big truck" jack with a 7000 lb. capacity...
{I would think that these were used on all 1 1/2 ton & up trucks}.
Part # 609909 Gp.# 8.820
This is the original jack & handle that was under the seat on my 1953 1/2 ton truck....
![[Linked Image from pic20.picturetrail.com]](http://pic20.picturetrail.com/VOL1568/13678754/24528751/413589871.jpg)
.
.
Hopefully, Gene can crunch some part #'s & come up with more info. on light duty Commercial jacks & handles.