Mike,
This is a series B broach and it says 1/8-BB HSS Poland on it. About 6 3/4 long. First of all, I used the broach we had and that is 1/8 wide, the print calls for using the key in the 3/32 direction but I just accommodated my depths to use the 1/8 wide cut.
Also you are right, I used a...