Cutlass screw

I recently obtained an original 1911 Boarding Cutlass. It is missing the slotted nut for the screw which goes through the handle. Does anyone know if this is the same nut used with the 98/05 sawback/butcher blade bayonets. Thanks for any help.
jimmiej

Same period should be same screws as by S98/05 also 9mm diameter of head and M4 metric .

Thank you very much for the reply. I have been trying to decide whether to go with a parts bayonet or buy new made screw/nut combo on sale from Europe.