OTK master fill plug thread size?

Maintenance, Repair, Equipment & Tools
1

I just wanted to confirm that the thread size for the fill plug on the the pictured master cylinder is m10x1. All references i can find say that it is 1/8 npt, witch it most certainly is not.

20200516_163925
20200516_163925.jpg4032×3024 3.69 MB
20200516_163928
20200516_163928.jpg2851×2138 2.23 MB
20200516_163932
20200516_163932.jpg4032×3024 3.55 MB
20200516_163938
20200516_163938.jpg4032×3024 3.59 MB

2

This is the right one : https://www.otkshop.dk/shop/bolt-med-o-ring-28374p.html

3

Yep that’s the one. Was I correct?