Quote Originally Posted by enfield2band View Post
At £1 each I would look at fleabay. I have just had a quick look and you can get 20 for less than £2.

Dyson lists his at 8.5mm x 1mm. If you get the nearest it would not take much to file the hole out by 1/2mm, approx .020".
Yes, I thought the same but I already have boxes and boxes of various washers in my workshop. I have ordered a couple of spare nipples though.