McMaster has boxes of 100 for $7.50. But apparently it is no longer considered a standard size for hardware stores to carry in quantity. Color me surprised.
From: AF <[email protected]> On Behalf Of Bill Prince Sent: Tuesday, June 10, 2025 10:47 AM To: [email protected] Subject: Re: [AFMUG] is 12-24 an oddball screw size? A couple of our local ACE hardware stores have an enormous nuts/bolts/screw departments, including your pan head 12-24 x 1/2" variety. You can also get pretty close at Amazon. https://www.amazon.com/Hard-Find-Fastener-014973457464-Phillips/dp/B01AKFCP3Y/ref=pd_ci_mcx_pspc_dp_2_t_5 bp <part15sbs{at}gmail{dot}com> On 6/10/2025 6:53 AM, Adam Moffett wrote: In my bygone days of drafting, the most common American sizes I saw on drawings were 10-32 and 1/4-20. I don't recall if I ever saw a 12-24 called out, but I remember noticing that everybody used 10-32 and 1/4-20. Although it's common for us in equipment racks, it might truly be "odd" for the general population. My local Home Depot seems to have small packets of 12-24. Not a box of 100 though. 12-24 is used with some cage nuts and some racks, so I'd assume anyone who sells rack hardware will have a big box of them available. ShowMeCables or Rack Solutions, etc. Probably longer than 1/2" though. -Adam _____ From: AF <mailto:[email protected]> <[email protected]> on behalf of Ken Hohhof <mailto:[email protected]> <[email protected]> Sent: Tuesday, June 10, 2025 12:33 AM To: 'AnimalFarm Microwave Users Group' <mailto:[email protected]> <[email protected]> Subject: [AFMUG] is 12-24 an oddball screw size? 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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