For sale are NOS American STI-3 momentary on-off-on switches, identical to those used in the MITS Altair 8800B front panel. These switches have typically been extremely hard to find, usually having to come from a donor Altair front panel. These switches are New Old Stock, packed in individual bags, and include two nuts, a lock washer, and a keyed locating washer.

Due to age, these switches may have some silver oxide buildup on their terminals, which will have to be removed before soldering to ensure a good solder joint.

The last picture shows one of the new STI-3 switches next to a broken STI-3 removed from an Altair 8800B front panel. They are identical.