New Vimex (Marked Dae Ryung) Panel Mounted, 3 Pin Round Microphone Plug Receptacles for Sound Equipment, Part Number E503A0120N, or 0000001878.  Each bid quantity is for a Lot of Five (5) Receptacles.  You may bid / buy any number of lots, up to the total quantity available above.

These were purchased at an electronics liquidation earlier this year, and they were brand new in the supplier bags.  We repackaged them in heavy Ziplok bags.  They are very sturdy receptacles and are made of some kind of very strong plastic, with the pins molded into place.  Since we know very little about these, we will price them cheap, take some careful measurements, and let someone with more knowledge figure them out.

According to the calipers:

Face plate dimensions:  1.265" x 1.026" (32.13 mm x 26.07 mm)

Face plate thickness:  .115" / 2.92 mm

Mounted depth, including terminals:  1.080" / 27.43 mm

Lower socket inside diameter (where the pins are):  .639" / 16.24 mm

Inside diameter of ring (above where the pins are):  .782" / 19.87 mm

Receptacle inside depth:  .740" / 18.81 mm

Pin diameter:  .091" / 2.33 mm

Pin spacing (approx.):  The two widest ones - .325" / 8.25 mm ....... The closest ones - .236" / 6.00 mm