scope:

This specification covers multiple cable penetrator frames, accessories, and insert material items for sealing electric cable passing through decks, bulkheads, and electrical equipment on Naval ships.

Penetrators shall be classified in accordance with 1.2.1 through 1.2.1.4.7.

The part number shall be of the following form, as specified (see 6.2):

M24705/2 B N 2006 (see 1.2.1.1) (see 1.2.1.2) (see 1.2.1.3) (see 1.2.1.4)

The Military designation consists of a prefix M, which indicates a Military specification item, the specification number, and the specification sheet number. Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commander, Naval Sea Systems Command, SEA 55Z3, Department of the Navy, Washington, DC 20362-5101 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter.

Items shall be designated by a single letter specified as follows:

A = Assembly, end packing

B = Cable insert blocks or blanking blocks

F = Frame

I = Filler inserts

P = Cable sealing plug

R = Reducers

S = Stay plates

C = compression plates

Item material shall be as specified (see 3.1) with the item material designated by a single letter specified as follows:

A = Aluminum

B = Brass

C = corrosion-resistant (CRES) steel

G = Glass reinforced plastic (GRP)

N = Not specified

S = Steel

Item designation shall be as specified in 1.2.1.4.1 through 1.2.1.4.7.

Unless otherwise specified (see 3.1), cable insert blocks shall be differentiated by an item designation consisting of four consecutive digits. The first two digits shall indicate the exterior width of the cable insert block in millimeters (mm). The last two digits shall indicate the diameter of the passage of the cable insert block in mm.

Unless otherwise specified (see 3.1), end packing assemblies shall be differentiated by an item designation consisting of a single digit corresponding to a particular style.

Unless otherwise specified (see 3.1), frames shall be differentiated by an item designation consisting of a single digit corresponding to a particular size.

The item designation for filler inserts shall be as specified on the applicable specification sheet (see 3.1).

Unless otherwise specified (see 3.1), cable sealing plugs shall be differentiated by an item designation consisting of five consecutive digits. The first digit shall indicate the number of passages through the cable sealing plug. The second and third digits shall indicate the exterior diameter of the cable sealing plug in mm. The fourth and fifth digits shall indicate the diameter of each passage of the cable sealing plug in mm.

The item designation for reducers shall consist of the three consecutive digits as specified (see 3.1) which correspond to the item designation of the multiple passage rectangular-faced cable insert block for which the reducer is associated.

The item designation for stay plates shall be as specified in the applicable specification sheet (see 3.1).

intended Use: