Nazis called themselves national socialists as opposed to the ruling democratic socialist party.

It would have been impossible for a non-socialist party to get any kind of popular mandate in 1933 Germany. Nonetheless, the democratic socialists had discredited themselves by being feckless and awful.

Socialist policies that the Nazis supported were mostly superficial and quickly abandoned. Those included:

1. Making May Day a national holiday, which they did do but then they used the following day to arrest all the trade unionists and confiscate all union property or use by the the party
2. A public stimulus/building program, where all projects were quickly abandoned except those that were seen as valuable for war, like the autobahn.
3. "People's products" subsidized consumer goods like radios and automobiles. Only radios were ever delivered through this program by the NS regime mostly so people could hear Gobbles' propaganda.

The Nazis did not support land reform preferring to sidestep/triangulate with their "leibensraum" theory: they will not reform the large landholdings in Germany but they will give land to peasants from conquered land. In general the Nazi's socialist/materialist promises came with an asterisk that the people will be compensated after the war by redistributing the spoils of the conquered lands.