This Ithaca manufactured hinge pin screw is for the model M-66 12 & 20 gauge Supersingle lever action single barrel shotgun and is in very good condition with light wear and handling marks. (file photo)

Note: Ithaca model M-66 Supersingle single barrel shotguns with the following gauges and serial numbers have been observed with this part:

12 Gauge: 30958 & 53451

20 Gauge: 202920