Hi No,
There is No need for a through axle on a none suspension fork!
I have been a motorcycle mechanic for over 30 years and most motorcycles under 250cc have a 10mm front axle so why do you think you need to run a through axle on your touring bicycle?
The STD front axle on All Bicycle's
(apart from a few MTB's) is 9mm it is very strong and will only break if you start doing "Drop In's" off cliff's!
If you think the 5mm QR rod is not up to your loading
(which it is) you can buy some hubs with "Nutted" 9mm Axle or one of the Hub's made to run with a 9mm QR through axle which fits into any STD cycling fork.
9mm front axle forks and hubs Do Pass the new tough Europe Safe STD so all is OK.
If at the end of the day you still think you need a Through Axle?
Then here you go....
Crafted of Salsa Kung Fu CroMoly, the CroMoto Grande Maxle delivers ultimate steering precision and torsional stiffness in a rigid fork. Suspension corrected for 80mm travel forks. The fork features 20 x 110mm spaced Maxle-specific dropouts and includes a front 20mm Maxle axle. A perfect match for a rigid 29'er mountain bike.Salsa Kung Fu CroMoly
20 x 110mm Maxle-specific dropouts
Maxle axle included
1-1/8” threadless steerer (260mm)
468mm axle to crown
45mm rake
51mm ISO disc tabs
Tire clearance = 90mm
Black ED Coating
1196 grams with full length steerer tube and including Maxle axleNote: Disc only because only Disc's can STOP a Bicycle
Pete