Onsrud End Mill Idendification

[millingCanuck]

I just won a couple of end mills in an auction and I'm trying to figure out the specs on them. I'm reading the values/numbers on the sides but they don't seem to match up with any product numbers that I can find so any help would be appreciated.

First:

25.0001-016-H8
ONSRUD 1/4
904033

Second:

25.0002-020-TM360
ONSRUD .2490
8RB944

Third:

0001 050 M7
ONSRUD 3/8
RBL34459 144172


Thanks
Andy

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[millingCanuck]

So I sent a request off to Onsrud and for anyone that finds this in the future the first group of cutters are custom made HSS for Aerospace used for cutting aluminum. So apparently I have a lifetime supply of 1/4" aluminum cutters .

I'll update this if I find out more about the other two.

Andy