MIL-DTL-60525B
3. REQUIREMENTS
3.1 First article. When specified in the contract or purchase order (see 6.2), a sample shall be
subjected to first article inspection (see 4.4 and 6.3).
3.2 Materials. All materials used in the manufacture of the initiators 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.
3.2.1 Raw material. The contractor shall be responsible for selecting from the classification list
contained in the raw material specification the surface and physical condition of the raw material
intended for use in manufacture.
3.3 Hardness and other physical properties. Physical properties required by the drawing shall be
uniform throughout the part within specified tolerances. Requirements for all alloy steel parts
shall be achieved by quenching and tempering.
3.4 Hydrostatic pressure. The initiator chamber and cap shall withstand a hydrostatic pressure of
14,000 to 15,000 pounds per square inch (psi) for 15 seconds, minimum, without deformation or
mechanical failure (see 6.4.1).
3.5 Firing pin release. The firing pin of the metal parts assembly, less safety pin, shall release
from the cocked position when the application of an axial load of 18 to 25 pounds has withdrawn
the initiator pin 0.370 inch, minimum, and 0.425 inch, maximum.
3.6 Initiator pin security. Application of an axial load of 200 to 220 pounds to the initiator pin of
the metal parts assembly shall not withdraw the initiator pin past the safety pin. Load application
shall cause no permanent deformation of the safety pin.
3.7 Metal parts assembly. Parts shall be combined to produce an assembly which conforms to the
requirements of the metal parts assembly drawing. All threaded joints shall be assembled
handtight.
3.8 Protective finish. Protective finish shall be in accordance with the applicable specifications
and shall apply to all surfaces of the component regardless of contour configuration.
3.9 Residual magnetism. The metal parts assembly shall not deflect the indicator of the compass
more than 5 degrees in either direction using procedures in 4.6.6.
3.10 Workmanship. The requirements for workmanship are as specified on the applicable
drawings, referenced specifications and the following:
3.10.1 Metal defects. All components shall be free from cracks, splits, cold shuts, inclusions,
porosity or any similar defect.
3.10.2 Burr. No part shall have a burr which might interfere with the assembly or function of the
item or which might be injurious to personnel handling the item.
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