MIL-DTL-24705B(SH)
3.3.13 Aluminum parts. Unless otherwise specified (see 3.1), aluminum frames and accessories shall be as
specified in 3.3.1.1.a.
3.3.1.4 Brass parts. Brass for frames and accessories shall be as specified in 3.3.1.1.b.
3.3.1.5 Glass-floor reinforced polyester (GRP). GRP for frames and accessories (see 3.1) shall be in
accordance with ASTM D5948.
3.3.2 Dissimilar metals. Dissimilar metals shall be in accordance with MIL-HDBK-454.
3.3.3 Insert material items. Insert material items (see 6.4.6) shall be constructed of material which shall meet
the requirements specified herein and on the applicable specification sheet (see 3.1).
3.3.4 Lubricant. Lubricant (see 3.1 and 6.4.7), when specified (see 6.2), shall be in accordance with C-T-91.
3.3.5 Toxicity. When evaluated in accordance with 4.7, the penetrators shall have no adverse effect on the
health of personnel when used for their intended purpose and shall not cause any environmental problems during
3.3.6 Hazardous material. Materials and parts containing asbestos, cadmium, lithium, mercury, polychlorinated
biphenyl, polyvinyl chloride (PVC), radioactive materials, chromates, or materials giving off toxic fumes under
operation or casualty conditions, shall not be used. Mercury and its compounds shall not be used during processing,
handling, and packaging of material and parts.
3.3.7 Material compatibility. Materials which (through outgassing or other physical phenomena) cause
deterioration of other materials or degradation of equipment performance shall not be used.
3.3.8 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or environmentally
preferable materials should be used to the maximum extent possible, provided that the material meets or exceeds the
operational and maintenance requirements, and promotes economically advantageous life cycle costs.
3.3.9 Changes in process or material composition. Prior to any changes in manufacturing processes or material
composition after qualification, the manufacturer shall submit to the qualifying activity a statement to that effect
which must be approved. The statement shall describe the proposed change, together with evidence to substantiate
his claim that such change can be achieved. At the discretion of NAVSEA, test specimens may be required to prove
the suitability of the proposed changes.
3.4 Construction.
3.4.1 General. The multiple cable penetrator frame, end-packing assembly (see 6.4.3), compression plate (see
6.4.3), stay plates, cable insert blocks, blanking insert blocks (see 6.4.1), and filler inserts shall be of the design,
construction and physical dimensions as specified in the specification sheet.
3.4.2 Small miscellaneous hardware. Self-tapping screws or other self-tapping devices shall not be used in any
assembled multiple cable penetrator.
3.4.3 Threads. Threads shall be unified form (UN), Class 2A or 2B, in accordance with FED-STD-H28 and
FED-STD-H28/2. The nominal size and thread per inch shall be as specified on the applicable specification sheet
(see 3.1).
3.4.4 Castings. Cast components shall be free from cold shuts, blow holes, or cracks that may in any way
affect their strength or serviceability of the casting. Fins or burrs on casting surfaces shall be removed.
3.4.5 Forming and machining operations. Forming and machining operations shall be completed before any
specified plating or finish is applied.
3.4.6 Sharp edges. There shall be no sharp edges.
3.4.7 Welding. Welding shall be in accordance with NAVSEA S9074-AR-GIB-010/278. Certification is not
required unless specified in the contract or order.
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