Germany used the Stock disk on the Gew 98 and the K98 Mausers. But Mauser made rifles for many different countries. Some used the used the stock disk and others didn't.
Mauser built 1893 and 1903 Mausers for Turkey with the stock disk. In the 30s Turkey updated a bunch of rifles to what is referred to as the M38 rifle. These rifles included the 1893, 1903, Gew 98 and K98AZ carbines.
Turkish Reworked Gew 98
Turkish reworked 1893
Turkish reworked 1903
Turkish built k.kale M38
Around 1940 Turk started building there own rifles to the M38 standards. These are marked with the year of manufactur and the factory's stamp K.Kale. These rifles used new and refurbished parts. The stock disk was used on them too.
The Czechs also used the stock disk on the 98/22 . These rifles were used by the Czechs and also sold to other countries .
Czech 98/22
Late in WWII the Germans were trying to cut corners and had stopped using the stock disk and went to a simple hole drilled in the butt plate.
During WWII the Czech factories were used to build K98 Mausers. After the war they used leftover k98 parts to build rifles to sale and boost their economy.
German k98
K98 with late war stock
Post war Czech 98 made from leftover German parts
Vz24 Mauser did not use a stock disk. Instead they used a divot on the left side of the recoil lug to assist with breaking down the bolt.
VZ 24
I hope this helps.