MIL-DTL-24705B(SH)
6.1 Intended use. Multiple cable penetrators are intended for use in maintaining watertight, airtight, fumetight,
and firetight integrity of electric cable penetrations through decks and bulkheads of surface ships and electric
equipment enclosures for both surface ships and submarines. Multiple cable penetrators are intended to be used
primarily with cables specified in MIL-DTL-17, MIL-DTL-915, MIL-DTL-24640, and MIL-DTL-24643. This
specification covers individual frames, accessories, and inserts. Requirements for multiples, banded frames,
tandems, or open bottom frames can be found in MIL-STD-2003.
6.2 Acquisition requirements. Acquisition documents should specify the following:
a.
Title, number, and date of this specification.
b.
Title, number, and date of the applicable specification sheet and the Military part number (see 1.2.1).
c.
d.
If lubricant is required (see 3.3.4).
e.
If EMC requirements are applicable, the effectiveness to ground shall be specified (see 3.5.5 and 4.6.7).
f.
g.
If marking for frames and accessories is other than specified (see 3.6.1).
h. If this manufacturer is submitting their system products for prequalification tests (see 4.2), the IR signature
(see 4.6.14) of the sample blocks provided for prequalification tests must be supplied with the blocks.
i.
When material control objective quality evidence is required (see 4.5).
j.
Packaging requirements (see 5.1).
k.
If material certification from the manufacturer of the GRP material must be furnished for approval (see
6.3 Qualification. With respect to products requiring qualification, awards will be made only for products
which are, at the time of award of contract, qualified for inclusion in Qualified Products List QPL No. 24705
whether or not such products have actually been so listed by that date. The attention of the contractors is called to
these requirements, and manufacturers are urged to arrange to have the products that they propose to offer to the
Federal Government tested for qualification in order that they may be eligible to be awarded contracts or orders for
the products covered by this specification. Information pertaining to qualification of products may be obtained from
Commander, Naval Sea Systems Command, ATTN: SEA 05S, 1333 Isaac Hull Avenue, SE, Stop 5160,
Washington Navy Yard DC 20376-5160 or emailed to commandstandards@navy.mil. An online listing of products
qualified to this specification may be found in the Qualified Products Database (QPD) at
6.4 Definitions.
6.4.1 Blanking insert block. The fire blanking insert block is a solid cable insert block with no passages.
6.4.2 Cable insert block. The cable insert block is a one- or two-piece block with single or multiple passages to
accommodate a cable or cables. The block fits around the cable or cables to form an airtight, flametight, watertight,
and firetight seal when installed in a multiple cable penetrator assembly.
6.4.3 End-packing assembly and compression plate. The end-packing compression assembly is a component
consisting of insert material sandwiched between metallic plates. It is used in conjunction with the compression
plate to apply compression on all internal parts and to fill the void between the top row of insert blocks and the
frame.
6.4.4 Filler inserts. Filler inserts are rectangular or specially-shaped components provided in multiple units or
single pieces which are used to fill void spaces in rectangular-faced blocks or multiple cable penetrator assemblies.
6.4.5 Frame. The frame is the housing into which accessories and insert material items are assembled. When
used to pass cables through bulkheads or decks, the multiple cable penetrator frame is welded to the bulkhead or
deck.
6.4.6 Insert material. Insert material consists of cable insert block, blanking insert block, and filler inserts.
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