MIL-D-46606B
3.3 Materials. All materials used in the manufacture of the cartridges shall conform strictly to the
specifications referred to on the respective drawings unless specific approval in writing covering a departure
therefrom has been obtained from the cognizant Navy design activity prior to manufacture. When alternate
materials or methods of manufacture are specified on the drawings, the bidder's selections shall be clearly
stated in the proposal.
3.4 Components.
3.4.1 Primary components. For the purpose of this specification, the M42 Primer, Delay Charge and
the output material charge are considered primary components. Only primary components from a single lot
shall be used in a production lot of cartridges; however, one primary component production lot may be used
in more than one cartridge production lot (see 6.7).
3.4.1.1 Primer. The primer shall conform to the applicable drawing and reference specification. Only
percussion primers from lots manufactured within the last 24 months or recertified within the last 12 months
shall be used in these units. Prior to assembly into a delay element, the primer shall be visually examined in
accordance with 4.6.5 and radiographically examined for defects as specified in 4.7.1.
3.4.2 Protective finish. The finish of each component part shall be in accordance with MIL-C-60539
and the applicable drawing (see 4.7.2).
3.5 Assembly.
3.5.1 Radiographic examination. Each delay element assembly shall be radiographically examined for
defects (see 4.7.3).
3.5.2 Vibration. The assembled delay element shall withstand vibration as prescribed in MIL-STD-810,
Method 514.3, Test Procedure I, Test Condition I-3.2.5 without evidence of any disintegration of the primer,
propellant, or igniter, or derangement of any component (see 4.7.4 and 6.2).
3.6 Functional requirements.
3.6.1 Delay element performance.
3.6.1.1 Misfires. The ignition delay element shall not fail to fire.
3.6.1.2 Ballistics. The ignition delay charge shall consist of barium chromate, as specified in MIL-B-550,
and boron, as specified in MIL-B-51092, in the proportion and quantity fixed by the contractor to produce the
ignition delay times required in table I (see 6.6.1).
3.7 Workmanship. Delay elements shall be free of cracks, splits, or other defects which might prevent
proper mating with connecting parts or proper functioning of the device.
TABLE I. Ballistic requirements.
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