Just an interesting note. I understand why you might find 'axis' to give you a mental second thought.
The swastika is widely known because of it's use by the Nazis. With my Baptist youth group I visited the Jewish Temple in Atlanta, Georgia years ago and noticed the carvings along the wall. There were swastikas among them. I asked the Rabbi what they were doing on the wall and he explained that they were symbols of power dating back over 3000 years and that the temple here had been built before WWI. So the use of a symbol or word like 'axis' when associated with totally negative things, like nazis, can change the original meaning if we fail to learn the 'history' of things.
The Original Meaning
The word "swastika" comes from the Sanskrit svastika - "su" meaning "good," "asti" meaning "to be," and "ka" as a suffix.
Until the Nazis used this symbol, the swastika was used by many cultures throughout the past 3,000 years to represent life, sun, power, strength, and good luck.
Even in the early twentieth century, the swastika was still a symbol with positive connotations. For instance, the swastika was a common decoration that often adorned cigarette cases, postcards, coins, and buildings. During World War I, the swastika could even be found on the shoulder patches of the American 45th Division and on the Finnish air force until after World War II.
There's lots of info on the net if you do a search.