RF Panel Drill Guides: SO-239/N Flange and BNC D-hole
We calculate the final price from your selected file. You review and accept it before payment.
Saved on this device.
Drill guides for SO-239/N 4-hole flanges and BNC D-holes, plus a check key for the finished openings.
- Rating
- 0 / 5
- Likes
- 0
- Downloads
- 1
- Makes
- 0
- Views
- 9
- Reviews
- 0
Updated at source:
Model information
- Source
- Printables
- Category
- Tools
- License
- Standard Digital File License
Two drill guides and a check key for the panel holes that radio projects keep needing: the 4-hole square-flange pattern used by SO-239 and N sockets, and the D-shaped hole for a BNC bulkhead.
Line the notches up with a crosshair on your panel, tape the guide down, and centre-punch or pilot-drill through it. The four corner holes take a 3.2 mm bit. Scribed lines on top show the 16.3 mm centre hole, the 25.4 mm flange, and the outline of the BNC D, with the flat extended so you can square it up.
For the BNC hole: drill 8 mm, then file out to the line, leaving the flat. When the D plug on the check key goes in, the hole is big enough. The round plug checks the SO-239 / N centre hole the same way.
The hole positions come from Amphenol's catalogue drawings for the SO-239 (83-1R), N (82-97) and BNC (31-221) panel sockets. They're listed in the ZIP. Some other makers' N sockets use a wider hole spacing, so hold the guide against yours first.
It's a marking jig, not a hardened drill bush, so expect it to last a few panels. Prints flat in a few minutes with no supports. Check the guide against your socket before you drill a panel you care about.
Print settings:
0.2 mm layers (0.12 mm for finer grooves), 5 walls, 40%+ infill
No supports. Flat, text/grooves up; check key with the plugs up.
PLA or PETG.
Largest part about 70 x 24 mm.
I designed this in OpenSCAD with AI help.
If you print one, I'd love to see it. Post a make with a photo, good or bad, and it helps me improve the next version.
Also on Cults: https://cults3d.com/en/3d-model/tool/rf-connector-panel-drill-guides-so-239-n-4-hole-flange-and-bnc-d-hole-with