They may be terms used in ice fishing. Some people fish with spears through larger holes in the ice. The holes are augered or drilled or sawed through the ice. The shanty [small hut type enclosure] is placed over the hole and is large enough to protect the fisherman from the weather.
In a Shanty in Old Shanty Town was created in 1932.
An HSS drill bit is the most common.
Shanty
The plural of shanty is shanties. As in "the shanties look poor".
My auntie lives in a shanty. The new boutique at the mall is called 'The Panty Shanty'.
An axe or a spear were possibly most common.
5.105 is 0.201 inch , or #7 on drill gauge. Both are common drill bits.
A shanty is no more than a shack.
Someone who lived in a shanty, i.e. a shack.
shanty town
It was a shanty town built across the street from the White House. She lived in a shanty down by the river.
How would that be possible? That is a very common drill.