Ikea Stockholm cabinet assembly: 109067 etc.

I went to Ikea with the lovely Carol, and we selected a black Stockholm cabinet. Of course some assembly was required. Step 1 was to screw in twenty (20) pegs or whatever. Whew -- felt like having a beer after that, but with 21 steps to go, I dared not.

Subsequent steps were easier, until I got to step#14, which was an exercise in science (physics, materials science, anthropology, textual criticism, etc.) because I did not grok the picture. Well, I got the idea that for this step I should be sure to use the 109067 screws, not the 100344.

What's the difference between the two? From the picture (in the image scanned here and in the front of the instruction booklet) what I noticed was:

1. 100344 is shorter;
2. 100344 is fatter;
3. 100344 has coarse threads (vs finer threads of 109067).
4. And: 100344 has a combo Phillips/slotted head whereas 109067 has a Phillips-only head; I didn't notice that before!

The instruction book said that all eight of these lookalike screws were supposed to be in bag#1, but there were 4 in bag#1 and 4 in a separate bag all by themselves (the "elite" screws).

Now when I looked at the "elite" screws, I found they were maybe a little longer than the others, which argued for their being 109067. They felt a little fatter than the others, which contradicted the length thing. The threads had exactly the same pitch AFAICT, though the "elite" screws had a threadless part on the shank, like lag bolts. The "elites" were sorta brass-like in color vs chrome, and they had a combo Phillips/slotted head.

With those differences, I decided that the "elites" were 100344 and the common screws were 109067, based on the following logic:

1. 109067 is for a right-angle bracket that's pretty thin, hence we want the screws there that have threads all the way up to the head. In contrast, 100344 is for attaching a sorta "arched" part of the hinges, so their lag-bolt-ish feature wouldn't hurt.
2. The other screws that hold the hinges have both
   1. a brass-like color and
   2. combo heads, not Phillips-only.
3. 100344 goes into particle board but 109067 goes into something that looks like hardwood. Though the holes looked about the same size, it stood to reason (I thought) that the hardwood stuff didn't need as fat a screw in order to hold.

Since this took a fair amount of deduction etc., I thought I'd tell you about it.

The good news is: in the process of writing this I discovered that the picture indeed showed 100344 with a combo head (connecting "D" above with "2.b", so my judgment was vindicated. Whew!

Bottom line

The definitive difference between 109067 and 100344 for this cabinet is that 100344 has the combo Phillips/slotted head, whereas the 109067 is regular Phillips. Ignore the differences in length and thread-pitch suggested by the pictures in the instruction book. 109067 may be in bag#1 (with 100344 in a separate bag) or they might be packed together in bag#1 as the instruction book says.

Good luck and enjoy!