Onoto 5600 / 6230 /4601/ Plunger
This plunger is specially designed for the 5600 / 6230 /4601/ type pen and has been produced using original specifications.
It is attached to the rod by a 5ba left hand thread and is black in colour. The main body and the shut off part are assembled using the same 5ba L/H thread which ensures a good seal with the washer
This plunger has an ink shut off cone in the design and does not require a hard backing washer behind the rubber washer.
Each plunger purchased comes complete assembled with a 7.65mm diameter rubber washer and is held together with a 0.85mm diameter pin