MIL-DTL-60296B
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. Hardness and other 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 5500
to 6500 pounds per square inch (psi) for 15 seconds, minimum, without deformation or mechanical failure
(see 6.4.1).
3.5 Shear pin strength. The shear pin, after application of protective finish, shall shear when a load of 41
± 5 pounds is applied at the steady rate of 0.125 inch per minute.
3.6 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.
3.7 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.
3.8. Residual magnetism. The metal parts assembly shall not deflect the indicator of the compass more
than five degrees in either direction using procedures in 4.6.5.
3.9 Workmanship. The requirements for workmanship are as specified on the applicable drawings,
referenced specifications and the following:
3.9.1 Metal defects. All components shall be free from cracks, splits, cold shuts, inclusions, porosity or
any similar defect.
3.9.2 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.
3.9.3 Foreign matter. No part or assembly shall contain chips, dirt, grease, rust, corrosion or other
foreign matter.
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