I decided to try #6-32 screws for a flange-mount SO-239.
They do not fit in the holes, but I remembered I had a tap and die set with a #6-32 tap in it.
It turns out that the mounting holes of a flange-mount SO-239 are great for a #6-32 tap. I didn't even need oil, the tap just went right in, and so did the screws.
I think this is a helpful tip, especially considering that the #4-40 stainless steel hardware usually used is often impossible to find in local shops.
#HamRadio #AmateurRadio
npub1sf…v54n3
2026-10-22 20:35:22 UTC
Author Public Key
npub1sf2267xy2ev6wsj4qt89czkvy8jzag0t5ge3vug7lwgcfmq8phxs7v54n3Seen on
wss://relay.ditto.pubPublished at
2026-10-22 20:35:22 UTCEvent JSON
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"content": "I decided to try #6-32 screws for a flange-mount SO-239.\n\nThey do not fit in the holes, but I remembered I had a tap and die set with a #6-32 tap in it.\n\nIt turns out that the mounting holes of a flange-mount SO-239 are great for a #6-32 tap. I didn't even need oil, the tap just went right in, and so did the screws.\n\nI think this is a helpful tip, especially considering that the #4-40 stainless steel hardware usually used is often impossible to find in local shops.\n\n#HamRadio #AmateurRadio",
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