You never said what you were running on the RG8, so I'm not sure how much 'quality' you are after, maybe this is 10Base2 ethernet or something?
Good advice on crimping, I'm a frequent shopper at Fab Corp as well, and use the crimp tool and connectors for the majority of the coax needs. However, you will find a big controversy between 'crimp' and 'compression' when it comes to quality, leakage, power handling ability, etc.
The compression style comes with a couple rubber parts and several metal pieces inside. Basically the nut is tightened which compresses the ground braid between two metal surfaces via a rubber washer which maintains tension on them. It is a good product, unfortunately RG/8 is made in different grades, qualities, and even physical sizes depending on the manufacturer, so your actual fit may vary.
There are fittings that screw onto the coax, but the only type I have seen like this require the center conductor to be soldered as well as the braid. If they are similar to the hardware store "F" fittings for RG6 that just screw on, they are leaky and not very desirable.
One more 'gotcha', there is a 75 ohm "N" fitting available, and it will not work well mating to a 50 ohm connector. They get used in video and broadcast work, just be sure what you get is designed for 50 ohms.
Daron J. Wilson, RCDD
Solving 'Real World' problems