MIL-DTL-50714C (OS)
AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM)
ASTM E 1742
Inspection, Radiographic
(Copies of this document are available online at https://www.astm.org/cgi-
bin/SoftCart.exe/STORE/standardsearch.shtml?L+mystore+afpt6301+1062008944 or from the American
Society for Testing and Materials Customer Service, 100 Barr Harbor Drive, West Conshohocken, PA 19428-
2959.)
2.4 Order of precedence. In the event of a conflict between the text of this document and the references
cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes
applicable laws and regulations unless a specific exemption has been obtained.
3. REQUIREMENTS
3.1 First article. When specified in the contract or purchase order, a sample of bellows actuators 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 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.
3.3 Primary components. For the purpose of this specification, the delay element (Drawing 11738753) and
the M104 Propellant Actuated Initiator (Drawing 10551446) are defined as primary components. Only
primary components from a single lot shall be used in a production lot of initiators. One primary component
production lot may be used in more than one initiator production lot.
3.4 Ignition device. The ignition device shall conform to the applicable drawing and referenced specification.
Prior to assembly into a retainer, the ignition device shall be visually examined and X-rayed.
3.4.1 Sensitivity test. The PVU-1/A Ignition Device, when assembled and crimped into an ignition device
retainer, part no. 11731620, shall fire when drop tested at an energy level of 26.0 inch ounces and shall not
fire when drop tested at an energy level of 4.0 inch ounces.
3.5 Breakaway torque. Each threaded joint of the assembled initiator shall withstand a breakaway torque
application of 400 inch pounds without loosening or deformation using the procedure of 4.5.3.
3.6 Residual magnetism. The initiator shall not deflect the indicator of the compass more than five degrees
in either direction using the procedure of 4.5.4.
3.7 Functional.
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