I don't care for the cap nuts that Shimano uses on their NEXUS gear hub axles. I can find only cheap flange nuts in the proper size, but they will strip in no time on the NEXUS axle. The flat spots on the NEXUS axle are rough on the nuts. I find the kind of flange nut I want in cro-moly in other sizes, but not in 3/8" x 26 TPI. The nut must tolerate being torqued to 45 Nm (33 ft-lbs). Any suggestions where I might be able to find such nuts? I am talking about this type flange nut: I do not want a track nut (which has a rotating washer integrated).