On 8/1/2020 7:08 AM, AMuzi wrote:

snip

Sometimes that's good advice. In this case, not so much.

Neither a 1.0 metric nor a 26tpi gauge fits exactly on those axles and
Sachs/SRAM doesn't state the thread.Â* Even if you decided that
'something close' would do, there are no m11x1.0 nuts in common use
anywhere, not autos, not McMaster-Carr or what have you.

Tom is wrong of courseâ„¢, as you point out. That SRAM/Sachs cap nut is a
custom part not used anywhere else. The reason for 10.5mm is because
SRAM/Sachs felt that they needed a slightly, stronger, larger diameter
axle for their Dual-Drive hub.

Here is an image of the nut:
https://www.getmefixed.co.uk/wp-content/uploads/2015/06/IMG_6648_GetMeFixed_.jpg

Here's a Reddit thread about this nut, including an answer from Sheldon
Brown:
http://www.bentrideronline.com/messageboard/archive/index.php?t-127104.html.

Here is a shop in the UK selling them:
https://www.getmefixed.co.uk/shop/wheelsandtyres/hubs/hub-spares/sram-leisure-axle-nut-cap-nut-domed-10-5mm-x-26-tpi/.

As Sheldon pointed out, in a pinch you can use a Sturmey-Archer 13/32 x
26 TPI cap nut instead (13/32"=10.32mm).