Different type of shaft key (Dutch Key)

[thehomeengineer]

I am not sure what the standard name for this fixing is now. I guess we could give it an international standard via homemadetools. Any ideas please post (funnier the better)
The Home Engineer

[tonyfoale]

Hi Tony; I have fitted many of them to shafts in the industry, here in OZ are called Scotch keys?

Scotch key. Now that rings a bell, must be my Ozzie upbringing.

[thehomeengineer]

Hi All
This post via Wikipedia explains all about different types of keys:
https://en.wikipedia.org/wiki/Key_(engineering)

I also saw this on the web:Dutch Pins: How To? - Page 3

A "Scotch key" or "Dutch key" also provides a keyway not by milling but by drilling axially into the part and the shaft, so that a round key can be used. If the key is tapered, it is referred to as a "Dutch pin" and is driven in, and generally cut off flush with the end of the shaft. A Hirth joint is similar to a Spline joint but with the teeth on the butt of the shaft instead of on the surface.

Now I'm curious. I can see "scotch key" meaning "cheap-ass key" but I'm wondering where "dutch" comes from.

-Roland McPhearson (Cheap-ass)

So it appears they are both correct. You never stop learning!
The Home Engineer

[Toolmaker51]

I believe 'dutch' might mean practical but workmanlike, alternative method. Once, I had double-hung window sills to replace that had decayed. Upper surface was OK, underside was splintered and ragged. A carpenter told me, make a "dutchman". Unstable pine wood was pared down to solid material by 4" power-saw, chisel and bullnose plane. Then replaced with poplar, then contours were shaped and painted like original. A little tedious working upside down, back in 1981. They are still in place, indistinguishable from original.

I'm not Scottish, but know a few...they are not the stereotypical cheap, they just get a lot of bang for the buck. And unlike some cultures, their products are first rate. True cheapskates don't do that!

[RetiredFAE]

Browing firearms use this technique to lock screws into place, take a look at the original Browning A5 shotgun and you will see lots of them.
As mentioned, not the strongest lock, but more than adequate on the shotguns.

[carl blum]

Hi Gang:
I made a soft faced hammer in trade school, back in 1973. The head and handle were threaded together and I didn't want them to un-screw. So I drilled and tapped for a set screw. Fifty years later the head is still tight. I would think the torque capacity would be quite good. The set screw could be tighter than most square keys are fitted and the shear strength of a hardened set screw should be higher than a mild steel key.
Carl.