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|  MIL-T-46692B
however, supersedes applicable laws and regulations unless a specific exemption has been
obtained.
3. REQUIREMENTS
3.1 Materials. All materials used in the manufacture of the thrusters shall conform 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.
3.2 Components.
3.2.1 Primary components. For the purpose of this specification, the M146 impulse cartridge
(Drawing 8596426) is defined as a primary component. Only primary components from a single lot
shall be used in a production lot of thrusters; however, one primary component production lot may
be used in more than one thruster production lot.
3.2.2 Component parts. All component parts shall meet the applicable requirements of MIL-T-
46691 or MIL-T-60680 prior to assembly.
3.3 Torque. Torque requirements shall be as specified in table I. No movement shall occur
upon application of the breakaway torque.
TABLE I. Torque requirements.
A
B
Components
Seating or bottoming
Breakaway, min
(inch pounds)
(inch pounds)
Head and cylinder
600 + 30
400
3.4 Residual magnetism. The thruster shall not deflect the indicator of the compass more than
five degrees in either direction (see 4.3.2).
3.5 Radiographic examination. Eachthruster assembly shall be radiographically examined for
defects (see 4.3.3).
3.7 Functional.
3.7.1 Load. The thruster, fired under load, shall perform as follows (see 6.3).
3.7.1.1 Thrust. The thrust developed shall not exceed 550 pounds.
3
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