Stohlman Tandy Swivel Knife Set Screw Size

[jonb]

Went looking for the size of the set screw that Tandy uses in their swivel knives, wanted to switch from a slotted screw style to an Allen head style to make it easier to adjust.

What I found to my surprise is that it is a metric screw, size is 3mm x 4 mm long x 0.5 pitch.

Didn't find this info on the web, called a couple of Tandy stores, finally just went to the HW store and started guessing.

Besides changing out the screws in the swivel knives, I also replaced the screw in the Keen Edge sharpener with a socket head screw so that I could tighten and loosen the tool by hand. Since the screw is not in the way, no reason to have to use a screwdriver or Allen wrench now unless things get stuck.

[shtoink]

Really?! I never would have even guessed this. I wonder if this is only with the newer ones, since I would have placed my bets on the set screws being 8-32. Not 100% positive on it, but I think that's what the older ones were using.

I guess it really pays to have both Metric and SAE thread pitch gauges for just such occasions.

[jonb]

Like you, I'd assumed SAE would be the default and found an earlier leatherworker.net posting that listed 8-32 as the right size.

So... assuming that anything that sounds right and is on the internet is correct, I went and bought some without checking further. Oops!

The two Tandy knives I have are about 2 years old.