Siemens 985-004 Standard Shaft Adapter,
to 1″dia shaft w/ GCA, GBB, GIB, GGD Actuators.
This Standard Shaft Adapter is a replacement for a standard self-centering shaft adapter and accepts up to a 1″ diameter shaft. This shaft adapter is use with GCA, GBB, GIB, GGD damper actuators.

