1、 INCH-POUND MIL-DTL-50374B 14 September 2004 SUPERSEDING MIL-I-50374A 11February 1993 DETAIL SPECIFICATION INITIATOR, PROPELLANT ACTUATED, M104 ASSEMBLY This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers
2、the requirements for the M104 Propellant Actuated Initiator Assembly (see 6.1). 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3, 4 or 5 of this specification. This section does not include documents cited in other sections of this specification o
3、r recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements of documents cited in sections 3, 4 or 5 of this specification, whether or not they are liste
4、d. 2.2 Government documents. 2.2.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract.
5、DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-A-2550 Ammunition, General Specification For MIL-P-46994 Charge, Propelling, 8-Inch, M1, (Green Bag) Loading, Assembling and Packing Comments, suggestions, or questions on this document should be addressed to Commander, Indian Head Division, Naval Surface War
6、fare Center, Technical Information Branch (Code 4230), 101 Strauss Avenue, Indian Head, Maryland 20640-5035, or emailed to pennamih.navy.mil. Since contact information can change, you may want to verify the currency of this address information using the ASSIST Online database at www.dodssp.daps.mil.
7、 AMSC N/A FSC 1377 DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-50374B 2 MIL-DTL-50375 Initiator, Propellant Actuated, M104 Metal Parts Assembly (Copies of t
8、hese documents are available online at http:/assist.daps.dla.mil/quicksearch/ or www.dodssp.daps.mil or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.) 2.2.2 Other Government documents, drawings, and publications. The following other Gover
9、nment documents, drawings, and publications form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. DRAWINGS Naval Surface Warfare Center, Indian Head (CAGE Codes 19200 and 19203) DL105514
10、46 Initiator, Propellant Actuated, M104, Assembly 9252247 Carton, Packing Ammunition for, Initiator Propellant Actuated, M104 9252248 Box, Packing, Ammunition, for Initiator, Propellant Actuated, M104 9252249 Carton, Alternative, Packing Ammunition, for Initiator, Propellant Actuated, M104 (Applicat
11、ion for copies should be addressed to: Commander, Indian Head Division, Naval Surface Warfare Center, Attn: Technical Information Branch (Code 4230), Indian Head, MD 20640-5035.) 2.3 Non-Government publications. The following documents form a part of this document to the extent specified herein. Unl
12、ess otherwise specified, the issues of these documents are those cited in the solicitation or contract. AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) ASTM E1742 Standard Practice for Radiographic Examination (Copies of this document are available online at http:/www.astm.org/cgi-bin/SoftCart.exe
13、/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.) AMERICAN NATIONAL STANDARD INSTITUTE/AMERICAN SOCIETY FOR QUALITY ANSI/ASQ Zl.4 Sampling Procedures and Tables
14、for Inspection by Attributes ANSI/ASQ A8402 Quality Management and Quality Assurance - Vocabulary Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-50374B 3 (Copies of these documents are available online at http:/webstore.ansi.org/ansidocstore
15、/default.asp, or from the American Society for Quality, PO Box 3005, 611 E. Wisconsin Ave., Milwaukee, WI 53201-4606.) 2.4 Order of precedence. In the event of a conflict between the text of this document and the references cited herein (except for related specification sheets), the text of this doc
16、ument takes precedence. Nothing in this document, 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 initiators shall conform to the specifications referred to on the respectiv
17、e 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 bidders selections shall be clearly stated in the propos
18、al. 3.2 Conformance to documents. The M104 Initiator covered by this specification shall be manufactured in accordance with DL10551446. 3.3 Components. 3.3.1 Primary components. For the purpose of this specification, propellant, II-A Bi-convex pellets (MIL-P-46994) is defined as a primary component.
19、 Only primary components from a single lot shall be used in a production lot of initiators; however, one primary component production lot may be used in more than one initiator production lot. 3.3.2 Component parts. All component parts shall meet the applicable requirements of MIL-DTL-50375 prior to
20、 assembly. 3.4 Breakaway torque. The female body and male body of each assembled initiator shall withstand a breakaway torque application of 400 inch-pounds without loosening or deformation (see 4.3.1). 3.5 Residual magnetism. The initiator shall not deflect the indicator of the compass more than fi
21、ve degrees in either direction (see 4.3.2). 3.6 Radiographic examination. Each initiator assembly shall be radiographically examined for defects (see 4.3.3). 3.7 Leak test. Each assembled initiator shall exhibit no air leakage greater than 1 x 10-4standard cubic centimeters per second (see 4.3.4) at
22、 a 14.7 psia pressure differential. 3.8 Functional. 3.8.1 Ballistics. Initiators loaded with accepted pyrotechnic components (II-A pellets) and temperature conditioned shall produce pressure values specified in table I. Pressure values shall be recorded in a 6.5-cubic-inch closed bomb, Drawing 838AS
23、163. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-50374B 4 3.8.1.1 Initiation. The M104 initiators shall be assembled and fired with JAU-2/A25 initiator firing mechanisms complete with firing pins, shear pins, PVU-1/A ignition devices, and
24、 ignition device retainers. Minimum gas pressure is 800 psig for actuation. 3.8.2 Misfires. There shall be no misfires. 3.8.3 Mechanical failures. The initiator shall function without mechanical failure (see 6.4.2). 3.9 Workmanship. Initiators shall be free of cracks, splits, or other defects which
25、might prevent proper mating with connecting parts or proper functioning of the device. 3.9.1 Metal defects. All components shall be free from cracks, splits, cold shuts, inclusions, porosity, or any similar defect. TABLE I. Pressure values. Temperature (F) Minimum Pressure (psig) Ignition delay (see
26、 6.4.1) milliseconds, max 60 to 70 300 40 65 to 75 300 40 195 to 205 300 40 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,
27、 dirt, grease, rust, corrosion, or other foreign matter. 4. VERIFICATION 4.1 Classification of inspections. The inspection requirements specified herein are classified as follows: a. First article inspection (see 4.2). b. Conformance inspection (see 4.3). 4.1.1 Quality assurance terms and definition
28、s. Reference shall be made to ASQ A8402 to define the quality assurance terms used. 4.1.3 Inspections. Inspections shall be in accordance with MIL-A-2550 and ASTM E 1742. 4.2 Inspection provisions. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-
29、DTL-50374B 5 4.2.1 Lot. 4.2.1.1 Submission of product. Unless otherwise specified by the contracting activity, formation, and identification of lots shall be in accordance with ASQ Z1.4. 4.2.1.2 Size of lot. The production lot size shall be as specified in the contract (see 6.2). 4.2.2 Examination.
30、One hundred percent examination shall be performed for all critical defects. Examination for major and minor defects shall be performed in accordance with the classification of defects. Four power (4x) magnification may be used for inspection of such defects as burr and foreign matter. When complian
31、ce with the applicable requirement is in doubt as a result of visual examination, the characteristic shall be measured or gaged to determine acceptability. All nonconforming material shall be rejected. 4.2.2.1 Assembly, Drawing 10551446. Characteristics Defect Method of Inspection Critical 1 Metal d
32、efective Visual 2 Any part missing, except as otherwise classified Visual/X-ray 3 Improper assembly Visual/X-ray 4 Marking missing, incorrect, or illegible Visual Major 101 Thread damaged or not full Visual 102 Burr Visual 103 Foreign matter Visual Minor 201 Protective cap missing Visual 202 Protect
33、ive finish inadequate or missing Visual 203 Adhesive missing or inadequate Visual 4.2.2.2 Carton, Fiberboard (Inner) Ammunition, Drawing 9252247. Critical None defined Major None defined Minor 201 Contents loose Manual 202 Box damaged Visual 203 Sealing strip broken or missing Visual 204 Marking mis
34、sing, incorrect, or illegible Visual 205 Cut, damaged, or improperly sealed bag Visual Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-50374B 6 4.2.2.3 Box, Ammunition Packing, Drawing 9252248. Critical None defined Major None defined Minor 2
35、01 Contents loose Manual 202 Strapping missing, loose, broken, or improperly engaged Visual/Manual 203 Contents of box exposed Visual 204 Box damaged Visual 205 Marking missing, incorrect, or illegible Visual 206 Number of units incorrect Visual 4.2.2.4 Carton, Alternative, Ammunition Packing, Drawi
36、ng 9252249. Critical None defined Major None defined Minor 201 Contents loose Manual/Visual 202 Carton broken or damaged Visual 203 Number of units contained incorrect Visual 204 Marking missing, incorrect, or illegible Visual 205 Tape incomplete Visual 4.2.3 Inspection testing. The following tests
37、shall be performed in accordance with 4.3. 4.2.3.1 Breakaway torque. Each assembly shall be subjected to the breakaway torque application. Failure of any assembly to comply with 3.4 shall be cause for rejection of the assembly. 4.2.3.2 Residual magnetism. Each initiator shall be subjected to the tes
38、t for excessive residual magnetism as specified in 4.3.2. Failure of any initiator to comply with 3.5 shall be cause for rejection of the initiator. 4.2.3.3 Functional tests. The following tests shall be performed by the Government. 4.2.3.3.1 Ballistics. Twenty-one units shall be tested to determine
39、 compliance with 3.8. The units shall be temperature conditioned as provided in table II and 4.3.5.2. Failure of any unit to comply with 3.8 shall be cause for rejection of the lot. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-50374B 7 TAB
40、LE II. Conditioning temperature. Temperature (F) Sample Size 60 to 70 7 65 to 75 7 195 to 205 7 4.2.3.3.2 Retest. There shall be no retests. 4.2.3.3.3 Test failure. If a test failure is attributable to an assignable cause, excluding the test initiator, the original test results shall be discarded an
41、d that test reconducted. 4.3 Test methods and procedures. 4.3.1 Breakaway torque. A torque wrench set as specified in 3.4 shall be used in conjunction with a fixture to determine the adequacy of the joint. 4.3.2 Residual magnetism. The assembly shall be tested for excessive residual magnetism using
42、an approved compass in an area free of local magnetic effects by placing the assembly 5 inches from the end at the same height as the compass, in a north-south horizontal position (cap end at south) with the compass set in an east-west heading. The assembly shall be moved at a speed no greater than
43、10 feet per minute past the compass for its entire length, rotated 90 degrees in the horizontal position about its longitudinal axis, and moved slowly back past the compass. This procedure shall be repeated for each 90 degree rotation of the assembly for four full passes. 4.3.3 Radiographic examinat
44、ion. All assembled initiators shall be radiographically examined in accordance with ASTM E 1742, with the exception that an initiator assembly will be used for the penetrameter. Any observable imperfections in components or assembly shall be cause for rejection. The initiators shall be positioned fo
45、r the most revealing exposure, with the long axis of each assembly perpendicular to the rays of the X-ray machine. All initiators shall be identified with serial numbers prior to X-ray examination. The serial numbers shall be in consecutive numerical order beginning with the number 001 in each produ
46、ction lot. Any missing numbers are to be identified on the X-rays. The initiators shall be arranged on trays or boards in consecutive order, and each radiograph shall carry a permanent identification of the units displayed thereon. The radiographic plate identification shall include item nomenclatur
47、e, the complete lot number, the span of serial numbers displayed, and the contract number. The radiographs of the entire production lot shall accompany the ballistic sample to the activity conducting the production lot acceptance test. Defective initiators found during X-ray review are to be marked
48、on the X-ray prior to shipment and those defective items shall be removed from the production lot. Film interpretation of the radiographs shall verify the presence and correct positioning of the following parts: a. Flash tube, P/N 10551453 b. II-A Potassium nitrate pellets, MIL-P-46994 c. Sealing ri
49、ngs, P/N 10551451 and shall also verify that: Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-50374B 8 d. all .062 holes are present and intersect with .116 diameter holes in flash tube, P/N 10551453 e. there is metal between the two longitudinal .116 diameter holes in flash tube, P/N 10551453 4.3.4 Leak test. Each initiator shall be subjected to specified pressure di
