1、MIL-D-60873A 13 9999906 0507652 W I INCH-POUND I MIL-D-60873A 15 Januarv 1992 SUPERSEDING 25 April 1968 MIL-D-60873 (MU) MILITARY SPECIFICATION DELAY ELEMENT, CARTRIDGE, M69 ASSEMBLY 3is specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scop
2、e. This specification covers requirements for the M69 Cartridge Delay Element (see 6.1). 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications, standards, and handbooks. The following specifications and standards form a part of this document to the extent specified herein. Unless ot
3、herwise specified, the issues of these documents are those listed in the issue of the Department of Defense Index of Specifications and Standards (DODISS) and supplements thereto, cited in the solicitation (see 6.2). SPECIFICATIONS MILITARY MIL-B-550 MIL-A-2550 MIL-A-8625 MIL-B-51092 STANDARDS MILIT
4、ARY MIL-STD-105 MIL-STD-109 Barium Chromate Ammunition, General Specification for Anodic Coatings, for Aluminum and Aluminum Alloy Baron, Amorphous, Powder Sampling Procedures and Tables for Inspection by Attributes Quality Assurance Terms and Definitions I Beneficial comments (recommendations, addi
5、tions, deletions) atxi any pertinent data which may be of use in improving this document should be addressed to: Commander, Indian Head Division, Naval Surface Warfare Center, Standardization Branch (Code 3730), 101 Strauss Avenue, Mian Head, MD 20640-5035, by using the StandaKlization Document Impr
6、ovement Proposal D Form 1426) appeakg at the encl of this document or by seding a letter. AMSC NIA 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-D-bO73
7、A 13 99999Ob 0507653 T MIL-D-60873A MIL-STD-453 Inspection, Radiographic MIL-STD-8 10 Environmental Test Methods and Engineering Guidelines (unless otherwise indicated, copies of federal and military specifications and standards are available from Standardization Documents Order Desk, Building 4D, 7
8、00 Robbins Avenue, Philadelphia, PA 191 11-5094.) 2.1.2 Other Government documents, drawings, and publications. The following Government drawings form a part of this specification to the extent specified herein. Unless otherwise specified, the issues are those cited in the solicitation (see 6.2). DR
9、AWINGS NAVAL ORDNANCE STATION (CAGE Codes 19200 and 19203) DL1055 1589 8826729 8864162 Delay Element, Cartridge, M69, Assembly Box, Packing, Ammunition, for Delay Elements Container, Metal, for Delay Elements (Application for copies should be addressed to: Commanding Officer, Naval Ordnance Station,
10、 Data Control Branch (Code 3720), Indian Head, MD 20640-5035.) 2.2 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 regulati
11、ons unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 First article. When specified in the contract or purchase order, a first article sample shall be subjected to first article inspection (see 4.4, 6.2, and 6.3). 3.2 Conformance to documents. The M69 delay element covered by this s
12、pecification shall be manufactured in accordance with DL10551589 and all documents listed thereon. 3.3 Materiais. All materials used in the manufacture of the cartridges shall conform strictly to the specifications referred to on the respective drawings unless specific approval in writing covering a
13、 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. 2 V* a Provided by IHSNot for ResaleNo reproduction
14、or networking permitted without license from IHS-,-,-MIL-D-bO873A 13 m 9979906 0507654 1 W MIL-D-60873A - 3.4 Components. 3.4.1 Primary components. For the purpose of this specification, the M42 Primer, Delay Charge and the output material charge are considered primary components. Only primary compo
15、nents from a single lot shall be used in a production lot of cartridges; however, one primary component production lot may be used in more than one cartridge production lot (see 6.7). 3.4.1.1 Primer. The primer shall conform to the applicable drawing and reference specification. Only percussion prim
16、ers from lots manufactured within the last 24 months or recertified within the last 12 months shall be used in these units. Prior to assembly into a delay element, the primer shall be visually examined in accordance with 4.6.5 and radiographically examined for defects as specified in 4.7.1. 3.4.2 Pr
17、otective finish. The finish of each component part shall be in accordance with MIL-A-8625 and the applicable drawing (see 4.7.2). 3.5 Assembly. 3 S.1 Radiographic examination. Each delay element assembly shall be radiographically examined for defects (see 4.7.3). 3.5.2 Vibration. The assembled delay
18、 element shall withstand vibration as prescribed in MIL-STD-810, Method 514.3, Test Procedure I, Test Condition 1-3.2.5 without evidence of any disintegration of the primer, propellant, or igniter, or derangement of any component (see 4.7.4 and 6.2). 0 3.6 Functional requirements. 3.6.1 Delay elemen
19、t performance. 3.6.1.1 Misfires. The ignition delay element shall not fail to fire. 3.6.1.2 Ballistics. The ignition delay charge shall consist of barium chromate, as specified in MIL-B-550, and boron, as specified in MIL-B-51092, in the proportion and quantity fixed by the contractor to produce the
20、 ignition delay times required in table I (see 6.5.1). TABLE I. Ballistic reauirements. - Ignition delay time (sec) I II Temperature (O F) I I Upper II II -60 to -70 I 1.200 I 1.600 II II 195 to 205 I 1.100 I 1.500 II 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without lic
21、ense from IHS-,-,-MIL-D-60873A 13 9999906 0507655 3 Ly MIL-D-60873A 3.7 Workmanship. Delay elements shall be free of cracks, splits, or other defects which might prevent proper mating with connecting parts or proper functioning of the device. 3.7.1 Metal defects. All components shall be free from cr
22、acks, splits, cold shuts, inclusions, porosity, or any similar defect. 3.7.2 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. 3.7.3 Foreign matter. No part or assembly shall contain chips, dirt
23、, grease, rust, corrosion, or other foreign matter. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of all inspection requirements (examinations and tests) as specified
24、herein. Except as otherwise specified in the contract or purchase order, the contractor may use his own or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. The Government reserves the right to perform any of the
25、inspections set forth in this specification where such inspections are deemed necessary to ensure supplies and services conform to prescribed requirements (see 6.2). 4.1.1 Responsibility for compliance. All items shall meet all requirements of sections 3 and 5. The inspection set forth in this speci
26、fication shall become a part of the contractors overall inspection system or quality program. The absence of any inspection requirements in the specification shall not relieve the contractor of the responsibility of ensuring that all products or supplies submitted to the Government for acceptance co
27、mply with all requirements of the contract. Sampling inspection, as part of manufacturing operations, is an acceptable practice to ascertain conformance to requirements; however, this does not authorize submission of known defective material, either indicated or actual, nor does it commit the Govern
28、ment to accept defective material. 4.1.2 Quality assurance terms and definitions. Reference shall be made to MIL-STD-109 to define the quality assurance terms used. 4.1.3 Inspections. Inspections shall be in accordance with MIL-A-2550 and MIL-STD-453. 4.2 Classification of inspections. The inspectio
29、n requirements specified herein are classified as follows: a. b. First article inspection (see 4.4) Quality conformance inspection (see 4.5) 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-P +. Requirement 3.4.2 MIL-D-b0873A 13 9999906 0507656 5 Te
30、st 4.1.2 MIL-Dd0873A - 10 Delay bodies X 10 Primer retainers X 12 - (from ballistics sample) 4.3 Inspection conditions. Unless otherwise specified in the contract or purchase order (see 6.2), inspection conditions shall be as follows: - - X a. b. Altitude: Sea level c. d. Atmospheric: 14.7 psia Temp
31、erature: Room ambient 20“ to 25“ C (68“ to 77“ F) Humidity: 50 percent relative, maximum 3.5.2 4.4 First article inspection. At the beginning of regular production, the contractor shall submit a first article sample to a Government approved facility for evaluation. The sample shall consist of 10 del
32、ay bodies, 10 primer retainers, 21 units for ballistics, to be tested as indicated in table II, and 10 sets of unassembled components (including explosive components) for visual and dimensional examination, The first article sample shall be manufactured using the same materials, equipment, processes
33、, and procedures as used in regular production. All parts and materials, including packaging and packing, shall be the same as used for regular production and shall be obtained from the same source of supply. When it becomes necessary to make a change in either the primer, propellant, or igniter lot
34、 after initial production, 12 assembled delay elements from the first production lot thereafter shall be tested in accordance with 4.7.5. The Government reserves the right to require new first article samples until such time as an acceptable sample is submitted (see 6.3). 4.7.4 Vibration TABLE II. F
35、irst article inspection. Test Protective finish I I I I 3.6 I 4.7.5 I Function tests Sample size 21 4.4.1 Examination, tests, and facility. After provisional acceptance at source, the sample shall be inspected for all requirements of the drawings and specifications at a Government laboratory or othe
36、r such facility specified in the contract (see 6.2). 4.4.2 Temperature conditioning for ballistic test. The sample shall be temperature conditioned and tested to determine compliance with 3.6.1.2. The sample for firing shall be conditioned to table III. 5 Provided by IHSNot for ResaleNo reproduction
37、 or networking permitted without license from IHS-,-,-MIL-D-bO73A 13 = 99999Ob 0507b57 7 MIL-D-60873A TABLE III. TemDerature conditioning. Temperature (O F) Not vibrated Vibrated -60 to -70 3 4 II 65 to 75 I 3 II 195 to 205 I 3 I 4- II ?- 4.4.3 First article failure. Failure of the sample to comply
38、with the requirements of the drawings and specifications shall result in first article sample disapproval. 4.5 Quality conformance inspection. 4.5.1 Lot. 4.5.1.1 Submission of product. The product shall be submitted in accordance with MIL-STD-105. 4.5.1.2 Lot size. Unless otherwise specified (see 6.
39、2), the production lot size shall be not more than 1200. 4.5.2 Examination and tests. The quality conformance sample shall be subjected to the examinations of 4.6 and all the test procedures of 4.7 except for 4.7.4. 4.6 Examination. All delay elements and components shall be examined visually and ra
40、diographically and characteristics defined in accordance with the applicable drawings. One hundred percent examination shall be performed for all critical defects. Examination for major or minor defects shall be performed on a defect basis in accordance with the classification of defects. Four power
41、 (4X) magnification may be used in performing visual examination for such defects as burrs and foreign matter. When compliance is in doubt as a result of visual inspection, the characteristic shall be measured or gaged to determine acceptability. All nonconforming items shall be rejected. 4.6.1 Dela
42、y Element, M69, Assembly Drawing 10551589. Characteristic Defect Critical 1 2 3 4 5 6 7 8 Any part missing Improper assembly Primer not properly seated Mixed ammunition Flash hole missing or obstructed Primer uncrimped or seal missing Marking missing, incorrect or illegible Delay charge not visible
43、through flash hole Method of Inspection X-ray/Visual X-ray Nisuai X-ray/Visuai Visual Visual Visual Visual Visual 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-D-bO73A 13 797770b 0507b58 7 W Major 101 MIL-D-60873A Concentricity of flange with
44、 body 102 Diameter of body, max 103 104 105 Metal defective 106 107 Burr 108 Foreign matter Retainer cup not properly seated Firing plug not flush or below flush with retaining cup Protective finish inadequate or defective Minor 20 1 Total length, max 202 Lacquer missing or inadequate 4.6.2 Body Del
45、ay, Drawing 8594081, covering a detail of Drawing 10551589. Critical 1 2 Metal defective Flash hole missing or obstructed Major 101 102 103 105 104 106 107 108 1 o9 110 111 112 Minor 20 1 202 203 204 205 206 207 208 209 210 211 Pitch diameter, external thread, min Major diameter, external thread, mi
46、n Concentricity of body with pitch diameter of thread Diameter of cavity, max Diameter of head, min Diameter of flash hole Diameter of thread relief Length from cavity face to shoulder of head diameter Protective finish inadequate or defective Thread damaged or not full Burr Foreign matter present P
47、itch diameter of external thread, max Diameter of wrench hole Diameter of thread pilot Diameter of cavity, min Diameter of head, max Diameter of step rear of head Depth of wrench hole Depth to base of cavity Total length Length of step rear of head Length of thread pilot Gage Gage Visual Visual Visu
48、al Visual Visual Visual Gage Visual Visual Visual Gage Gage Gage Gage Gage Gage Gage Gage Visual Visual Visual Visual Gage Gage Gage Gage Gage Gage Gage Gage Gage . Gage Gage 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-D-b0873A 13 m 9999906
49、 0507659 O m MIL-D-60873A 212 Width of thread relief 213 Location of wrench hole 214 215 - Surface finish improper Radius or chamfer missing or incorrect Gage Gage Visuai Visual 4.6.3 Gasket, Aluminum, Drawing 8594082, covering a detail of Drawing 10551589. Critical None defined Major 101 102 103 104 1 o5 Minor 20 1 202 203 204 Diameter, outside, min Diameter, inside, rnax Metal defective Burr Foreign matter present Diameter
