The threads do match up to a zerk fitting but the angle drive is made out of soft metal so you can force it to fit. The bigger issue is that you can develop a lot of pressure with a grease gun and if you are not careful you will blow the side right off. IMHO it is better to use the screw and a small hand powered grease gun with a blunt tip. This way you can't put too much presure into the angle drive. Also a zerk fitting will hold the pressure inside, if you use the screw the pressure is released when you remove the hand greaser. For a job that is done infrequently just be careful not to lose the screw. David Teitelbaum vin 10757 --- In dmcnews@xxxxxxxxxxxxxxx, "Stephen Card" <stephen@xxxx> wrote: > Do the threads in the angle drive cross right over to a specific > size zerk fitting (size?) or does it have to be re tapped? I have my > front axle currently disassembled for brake work and would like to > make this modification while it's off. > Thanks, > Stephen > Vin 3601 > > >I personally like Andrei Cular's idea of replacing the lubricant > screw with a grease zerk fitting.