No luck at McMC. I can't remember where I got the one in the picture. The cable clamp swivels freely, by the way. I think it came with some bicycle accessory. Maybe it actually came with the fork -- I can't remember. That zip tie is not shown in the fork manual.
Ill ask a guy at work who seems to always have special parts for stuff like this - for laboratory applications.
Out of curiosity, what is that attached to the fork? Why is it important that it is held off?
Please, don't go out of your way.
Sometimes you want a cable to be mounted a bit away from tubing or other components, but the cable needs to be able to flex or twist. That's when these zip ties come in handy.
The one in the picture holds the brake housing that goes to the front brake. Usually, people just use a normal zip tie there, but the stand-off makes bend in the brake housing more gradual. Also, you can just unsnap the brake housing.