MIL-R-46837 Raceways, Steel, RigidThis specification covers the requirements for rigid steel raceway conduits which consist of a base and cover so formed as to distinguish raceways from metallic tubular conduits.

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MIL-R-46837B (MI)

3.4 Tolerances. Height and width tolerance shall be plus or minus 1/16 inch on references "X" and "Y" dimensions of tables I, II, III, and IV. The materials thickness tolerances shall be plus 0.010 and minus 0.005 inch, and the length shall be plus or minus 1/4 inch.

3.5 Marking. Each length of raceway shall be identified by the name or trademark of the manufacturer, this specification, type and size, and in accordance with MIL-STD-130.

TABLE I. Type I

Size	Dimensions			Length-Ft		Wire- Size	Race Capacity
	X	Y	z	Cover	Base	AWG	Type R or RH	Type T or RU
No 2	1/2	11/32	0.025	5	5	14 12	3 2	3 3
No. 5	3/4	17/32	0.040	10	10	14 12 10	4 3 2	6 6 4
No. 7	3/4	21/32	0.040	10	10	14 12 10 8	5 4 3 2	8 8 6 3
No. 10	1-5/16	15/16	0.040	10	10	14 12 10 8 6	10 10 6 5 4	10 10 8 8 5

Note: Wires are pulled through the raceways

Figure 1