MIL-DTL-24646B
3.8 Marking.
3.8.1 Information and identification plates. Information and identification plates shall be attached to the box cover
by means of screws in tapped holes or screws held by pads brazed to the back of the cover. Unless otherwise
specified (see 3.1), plates for steel and brass boxes shall be brass; plates for aluminum shall be CRES types A, B, or
C as specified in MIL-DTL-15024 and normal service of MIL-P-15024/5. Plate size shall be compatible with the
amount of information required and shall be standard dimensions as specified in MIL-DTL-15024 and MIL-P-15024/5.
3.8.1.1 Manufacturer's identification plate. The manufacturer's identification plate shall contain, as a minimum, the
following information:
Military Part or Identifying Number (PIN) (for example M24646/1-001).
a.
b.
Symbol number (see 3.1).
c.
Prime manufacturer's name, trademark or CAGE code.
d.
National stock number (NSN), if assigned.
On totally enclosed boxes (see 3.1), the plate shall be approximately centered in the upper or lower part of the cover
with the upper part preferred. On submersible and watertight boxes, the plate shall be on the outermost portion of the
cover (outside the seal). The exact location and size shall be the contractor's choice and shall be positioned such as
not to interfere with the placement of the information plate.
3.8.1.2 Information plates. Information plates shall be furnished for each set of fuses. Unless otherwise specified
(see 6.2), information plates shall be furnished blank. Information plates for all totally enclosed and watertight
boxes shall be positioned directly over the circuit identified. Information plates for submersible boxes shall be
positioned on the outermost portion of the cover (outside the seal) adjacent to the circuit identified. For fused boxes
with switches, the "OFF" position of each switch shall be indicated by stamping the cover or by welding or brazing an
information plate of the same material as the cover.
3.8.2 Caution and warning plates. When specified, caution and warning plates shall be as specified (see 3.1).
3.8.3 Polarity or phase marking. The base shall be clearly marked adjacent to each terminal and fused branch
circuit with the polarity (+ and - signs) or phase sequence (C, B, A, or AC, AB, and BC). Marking shall be permanent
and legible and shall be white paint applied by stenciling or silk screening or rubber stamping with white smudge
proof ink covered with a clear lacquer of commercial grade or engraved.
3.9. Workmanship The fuse boxes, including all parts and accessories, shall be constructed and finished in a
careful and workmanlike manner in accordance with good design and sound practice. Joined parts shall fit as tightly
as expected with good manufacturing practice and workmanship. The fuse boxes shall be free of cracked or
displaced parts, burrs, and other defects which will affect the life, serviceability, or appearance.
4. VERIFICATION
4.1 Classification of inspections. The inspection requirements specified herein are classified as follows:
First article inspection (see 4.3).
a.
b.
Conformance inspection (see 4.4).
4.2 Inspection conditions. Unless otherwise specified herein, all inspections shall be performed in accordance with
4.2.1 Preparation of inspection. Fuses of the amperages specified, shall be as specified in MIL-PRF-15160 and
shall be installed during operational and electrical tests as specified (see 3.1).
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