CRKT M16-04: two questions, on its thumb studs and its handle.

Mar 29, 1999
When I saw the CRKT M16-04 the first time, I didn't like it very much: thin liner lock, made in Taiwan. But it was designed by Kit Carson...

Then I read all the positive impressions on it throughout the Forums, and I went back to the shop to give it a second glance. A tough knife it is!

I bought one, at the moment. I am very satisfied with it. I haven't done anything hard cutting, but it seems it is solid.

Only two question (please don't flame me or laugh too loudly):

1) as Mr. Dexter Ewing says in his review, "the thumb studs also are the blade's positive stop".

Does someone know how hard can be the load the thumb studs can bear before they are "cutted" or broken away, when I am cutting something hard? I know their external diameter, but I don't know the diameter of their "pivot" into the blade itself.

2) the handle (as the whole knife itself) was designed by Mr. Carson, built in Titanium, with numerous holes drilled into it: my concern is, in this version built in Aluminium, these holes could weaken the handle itself, and more precisely in the region where the bigger hole near the blade pivot is. Does someone know how much load can this handle bear, when I am doing some hard cutting (e.g., making a point to a branch)?

Yes, I know, these are dumb questions, but just to know what I can do and what I cannot. I don't want to break my M16. I promise I'll never try to cut Rocky Mountains in half with a CRKT M16.

I know His Holiness Mr. Kit Carson himself read this Forum, and replies to some questions too. It would be sheer bliss if He can give a reply in person.

Many Thanks in advance.

Hmmm..I wish I could answer your questions, Carlo, but mi di spiace non sono un' ingeniere! :) I have broken many bolt heads off the threaded shafts in my days as a bicycle mechanic, but that is usually a shear force created by torque. I would be very surprised to see that happen on a knife in the way it is built, although it is possible, I suppose under testing cirumstances. The aluminum is something I wouldn't worry about too much. It is a pretty stiff material, and if nothing else will bend before it breaks. Sorry I coudln't offer more input. Try emailing Kit directly. I have done so and he is very good about answering most of his mail!

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On Two Wheels
Wow. I can't imagine what it would take to shear the thumb studs off of my M16/14. Since the load would be distributed across both studs, for the knife to fail there would take some serious abuse.

As far as the handle goes, at the point you describe (the big hole closest to the blade pivot) any force that would bend the handle would have to compress the metal in one place while stretching it in another. I think it could be done, but I wonder if the blade wouldn't fail first.

The experiment I am imagining is: clamp handle in a vise, put a long piece of pipe over the blade, and pull the pipe to one side until the blade, pipe, vise, or handle fails. My hypothesis is that the blade would break just above the thumb studs.

Of course, I have never tested a knife to failure and have no desire to start with my nice new M16. I am quite pleased with it, especially the flipper. The knife feels sufficiently sturdy for any normal use.

Jeff Paulsen
Sorry, I missed this one. I guess I miss the Search feature more than I thought.

The holes thru the blade for the thumb studs/blade stop and blade pivot are 5mm (.196). Plenty sturdy.

I don't feel the holes give any strength away. They were pretty thought out and prototyped and for the weight reduction/handle feel, and looks, they are worth it.

Hope I answered your questions.

Many thanks for your answer, Mr. Carson!

Yes, I see. With a diameter of 5mm, it would be very hard (quite impossible) to cut thumb studs using your knife in a normal way (and a little abusing too).

Mr. Carson said: [...] I don't feel the holes give any strength away. They were pretty thought out and prototyped and for the weight reduction/handle feel, and looks, they are worth it. [...]

Yes, I agree, but your desing was for Titanium liners. Do you have some datas on the tensile strenght of the Aluminium alloy CRKT uses? I am looking for it in my books, but I haven't found anything yet.

Many thanks again for this further answer and for your nice (and robust) knives.