The stripe pitch of a TV CRT will be FAR lower than that of a computer monitor. TV tubes are optimized for high brightness while data displays are optimized for high resolution. Also most computer monitor tubes have two focus pins while TV tubes have only one, although I don't know about that particular tube. While I've had good luck substituting CRTs, this is one case where you'll have a lot of trouble finding something else that will work. That little high-res Trinitron tube is a rare bird, I can't think offhand of any other applications I've seen one used in.

Best bet is probably to find a beat up ColorClassic with a good tube. You could also see if Richardson Electronics has one in stock but it won't be cheap. Careful with those CRTs, they aren't made anymore and CRT rebuilding is a dying art. For the most part what's out there is what's out there and when they're gone, they're gone. I hate that sickening hiss as air rushes into one.