OATEY 42370 2 in. 185 Brass Cleanout Plug

Yes. The Oatey 42370 is a 2 inch plug and is made to thread into 2 inch fittings. It is female threaded, so the threads take a fitting's male cleanout boss rather than the other way around. Match the plug size to the fitting size, not the pipe run size, if your cleanout tee is bushed down.

That is exactly why the 42370 is built the way it is. The raised square head meets Southern Plumbing Codes that require a raised square head on cleanout plugs. Inspectors in those jurisdictions will reject a flush or countersunk plug on that basis, so a raised-head brass plug is the safe spec.

10 psi. That puts the 42370 in DWV service, capping off a drain, waste or vent cleanout to keep sewer gas out of the building. It is not a pressure-pipe fitting, so do not use it on a supply line or anywhere it would see system water pressure.

Slip joint pliers. The raised square head on the 42370 gives you something to grab, which is the point of the raised profile: you can snug it and back it off later without chewing up a recessed socket. Keep it hand tight plus a nudge, since this is a 10 psi DWV plug, not a high-torque fitting.

The 42370 is solid brass through the body and head, so the square lugs hold up to repeated removal by a drain tech. On a cleanout that gets opened for rodding or jetting on a schedule, a plastic head can round off or crack; brass takes the pliers. It also seats against a cast iron or brass ferrule without the thermal movement you get mixing plastic into metal fittings.

What ships is the plug itself, 2 inch brass with a raised square head, weighing about 0.1 pounds. There is no gasket or cover plate included. Standard practice is to run a pipe thread sealant or Teflon tape on the threads before seating it, which also helps you break it loose next time instead of galling the brass into a cast iron ferrule.