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MIL-C-46228B
3.1 First article. When specified in the contract or purchase order, a first article sample shall be
subjected to first article inspection (see 4.4, 6.2, and 6.3).
3.2 Conformance to documents. The M93 Delay Cartridge covered by this specification shall be
manufactured in accordance with DL8593312 and all documents listed thereon.
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, M8 Delay Element,
Igniter Charge and the cartridge propellant 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.
3.4.1.1 Primer. The primer shall conform to the applicable drawing and reference specification. Only
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 cartridge, the primer shall be radiographically examined for defects
as specified in 4.7.1.
3.4.2 Hardness. The hardness of each component part shall be in accordance with the applicable drawing
(see 4.7.2).
3.4.3 Protective finish. The finish of each component part shall be in accordance with MIL-C-60539
and the applicable drawing (see 4.7.3).
3.5 Assembly.
3.5.1 Radiographic examination. Each cartridge assembly shall be radiographically examined for
defects (see 4.7.4).
3.5.2 Airtightness. Each assembled cartridge shall exhibit no air leakage greater than 1 x 10-4 standard
cubic centimeters per second (see 4.7.5) at a 14.7 psia pressure differential.
3.5.3 Vibration. The assembled cartridge 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 4.7.7 and 6.2).
3.6 Functional requirements.
3

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