I went to Ace Hardware today looking for a box of 12-24 x 3/8 or 1/2 pan head Philips machine screws, I had a box of 100 that I had used up. The box said Hillman and I'm almost positive I bought it at Ace.
They had sizes from 4-40 to 10-32 and even 10-24, then it jumped to 1/4-20. Figuring my eyes or my brain were failing me, I asked someone for help, and he told me 12-24 is an oddball size. He did find some in the specialty screw drawers but at $0.45 each. When did 12-24 become an oddball size? I mostly use M6 now for rack screws, but I use 12-24 for things like attaching DIN rail to backplates. My trusty Greenlee tap set isn't metric so I can't use M6. I'm sure I could order some from McMaster, I was just surprised the hardware store didn't have them in the bins.
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