Sn95 new style hub retaining nuts

Ordered some new hub nuts for my Sn95 front hub conversion on my 83 from Tasca a while back
These are different from the " old style " caged nuts and come with some red sort of sealant on the threads.... Just tried to install them and they are awfully tight... It took a 3 ft breaker bar to get them on about halfway and I stopped there..... At first I thought it was the sealant on the threads the nut came with but after I removed the nut, it almost looked like the new nut cut into the threads on my SN 95 spindles......
Any thoughts here?? Can't check part numbers as I apparently discarded the packaging
When I removed the nut I had on halfway, it took the 3 foot breaker bar to get it off also.... I installed the old " caged " nut back on and it was snug at first, but I after a couple of turns it went on and off correctly so I think my spindle threads are OK..... Camera batteries are dead so no pics available...
Has anyone else used these " new style " nuts and what has your experience been with these??

Thanks for the attachment....... I am going to reuse my caged spindle nuts with some blue locktite.....
I have to agree wth the people saying the threads are different on the new nuts... The applied loctite from Ford on the new ones might be tough , but the first few threads on my spindles look like I took a thread cutter to them.....
thanks again..

As I said I had to really grunt with a 36" breaker bar to get one side on about 4-5 threads... It really acted like it wanted to stop and not go any further... It was almost as hard getting it back off.....
I do not feel comfortable using the new ones.....