Caper: I believe that the term used to identify the "fitting" is found in here in the 2002 NEC here:
300.16 Raceway or Cable to Open or Concealed Wiring.
(A) Box or Fitting. A box or terminal fitting having a separately bushed hole for each conductor shall be used wherever a change is made from conduit, electrical metallic tubing, electrical nonmetallic tubing, nonmetallic-sheathed cable, Type AC cable, Type MC cable, or mineral-insulated, metal-sheathed cable and surface raceway wiring to open wiring or to concealed knob-and-tube wiring.
A fitting used for this purpose shall contain no taps or splices and shall not be used at luminaire (fixture) outlets.
I'm on the road, and when I get home I will look into the early catalog I have where this fitting should be identified.
[This message has been edited by Joe Tedesco (edited 07-24-2002).]
