A-A-50563 Conduit Outlet Boxes, Bodies, and Entrance Caps, Electrical: Cast MetalThis commercial item description CID establishes the government acquisition requirements for cast metal conduit outlet boxes, bodies, and entrance caps for use with threaded and threadless rigid conduit, intermediate metallic conduit, and electrical metallic conduit. Outlet boxes may be used as wire outlets or as mountings for lamp holders, rosettes, switches, convenience outlets, to enclose wire splices, for mounting or enclosing surface wiring offsets, pull boxes, and other functions in conduit runs. Entrance caps provide a weather resistant service entrance for wires.

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A-A-50563B

2.3 Forms. The outlet boxes and devices shall be one of the forms listed in table II.

TABLE II. Form configurations.

Form code	Configuration
A	Single gang
B	Two gang parallel
C	Three gang parallel
D	Four gang tandem
E	Two gang tandem
F	With 3 wire (3-knockout) insulating cover
G	With 5 wire (5-knockout) insulating cover
H	With 7 wire (7-knockout) insulating cover
J	With 4 wire (4-knockout) insulating cover
K	With 6 wire (6-knockout) insulating cover

2.4 Styles. The outlets and devices shall be one of the styles listed in table III . The front shall be the surface where the access to the wiring chamber is located. Placing the hub end up and viewing toward the cover opening shall determine the right and left side.

TABLE III. Style configurations.

Style code	Configuration
AAA	One hub in the back
AAB	Two hubs in the back
BBB	One hub in one side
BBC	One hub in each end, mogul style
BLB	One hub in one end and one hub at a 90 degree angle at the opposite end in the back, mogul style
BUB	One hub at each end at a 45 degree angle, mogul style
BTB	One hub at each end and one hub on one side, mogul style
CCC	One hub in each end
CCA	One hub in each end and one hub in the back
CCB	One hub in one end and two hubs in the other
CCD	Two hubs in each end directly opposite
CCT	One hub in each end and one hub in a side (Type II)
EEE	One hub in one end

Source: https://assist.dla.mil -- Downloaded: Check the source to verify that thi3s is the current version before use.