1、MIL-D-llC842 (MU) 25 September 1973 MILITARY SPECIFICATION DELAY EUMENT, CARTRIDGE: 60 ASSEMBLY 1. SCOPE 1.1 This specification covers Delay Element, Cartridge: 60, Assembly, for use in cartridges for propellant actuated devices in aircrew emergency escape systems. 2. APPLICABLE DOCUMENTS 2.1 The fo
2、llowing documents of the issue in effect on date of invitation for bids or request for proposal, form a part of this specification to the extent specified herein. SPECIFICATIONS Military MIL-B- 550 - Barium Chromate MIL-A-2550 MIL-E-5272 - Ammunition and Special Weapons, General - Environmental Test
3、ing, Aeronautical and Specification For Associated Equipment, General Specification For MIL-P -46994 MIL-B- 51092 - Boron, Potassium Nitrate - Boron, Amorphous , Powder STANDARDS Military MIL-STD-105 MIL-STD-109 - Sampling Procedures and Tables for Inspection - Quality Assurance Terms and Definition
4、s by Attributes DRAWIEGS Munitions Comand Dl0536004 8826728 - Delay, Element, Cadridge, 60, Assembly - Ammunition Container, Metal, M21 for Delay Element M5, M8, Mi3, M14, Ml5, m6, Ml7 or 60 (see 5.1) FSC 1377 THIS DOCUMENT CONTAINS /2 PAGES. h Provided by IHSNot for ResaleNo reproduction or network
5、ing permitted without license from IHS-,-,-MIL-D-L4842 13 7777906 0277375 3 m I 2.1 (Contd) DRAWINGS C8826729 - Box, Packing, Ammunition for Delay Element, M5, M8, M13, M14, M15, 16, ML7 or 60 (see 5.1) Cartridge, 60, Assembly IEL i0536004 - Inspection Equipment List for Delay Element, (Copies of sp
6、ecifications , standards , drawings and publications required by suppliers in connection with specific procurement functions should be obtained from the procuring activity or aG directed by the Contracting Officer. ) 2.2 Other mblications.-The followine: document forms a Dart of this specification t
7、o the extent specified herein. Unless otherwise indicated, the issue in effect on date of invitation for bid or request for proposal shall apply. ASA 46.1 - Surface Texture (bpplication for copies should be addressed to the American National Standards Institute (ANSI), 1430 Broadway, New York, N. Y.
8、 3. REQUIREMENTS 10018.) 3.1 General.-Materials, parts and assemblies shall conform to the U applicable drawings and referenced specifications. 1.2 Protective finish.-Protective finish shall be in accordance with the requirements specified on the applicable drawing and referenced specification and s
9、hall apply to all surfaces regardless of configuration. 3.3 Vibration,-The delay element assembly shall withstand vibration as prescribed in MIL-E-5272, Procedure XII, without evidence of any disintegration of the primer or delay charge or derangement of metal parts. 3.4 Functional. 3.4.1 The delay
10、element shall not fail to fire. 3.4.2 Ballistics. -The 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 delay time required in Table I (see 6.4). 2 Provided by IHSNot
11、for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-D-14842 13 = 9999706 029737b 5 m MILD- 14842 (MU) Table I Temperature 65O to 75OF -65O to -7OOF 2000 to 205 Delay Time, Seconds (see 6.2) 0.87 max. 0.72 3- 0.1w 0.54 -min. * For information only. 3.5 Florktnmship . -
12、 Workmanship shall be in accordance with the requirements of the applicable drawings, referenced specifications and the following: 3.5.1 Metal defects.- The part shall be free from cracks, splits, cold shuts, inclusions and porosity and other metal defects. 3.5.2 Burr.- The part shall not have a bur
13、r which might interfere with - the assembly or function of the item or which might be injurious to personnel handling the item. 3.5.3 Foreign mtter.- The part or assembly shall not contain chips, dirt, grease, corrosion or other foreign matter. 4. QUAUTY ASSURANGE PROVISIONS 4.1 Responsibility for i
14、nspection. - Unless otherwise specified in the contract or purchase order, the supplier is responsible for the performance of all inspection requirements as specified herein. specified in the contract or order, the supplier may use his own or any other facility suitable for the performance of the in
15、spection requirements specified herein, unless disapproved by the government. The government reserves the right to perform any of the inspections set forth in the speci- fication where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. Except as
16、 otherwise 4.1.1 Quality as surance terms and definitions e - Reference shall be made to MIESTD-109 to define quality assurance terms used. 4.1.2 4.2 First article sample. 4.2.1 Initial production saup1e.- At the beginning of regular production, a sample shall be submitted in accordance vith contrac
17、t requirements and shall Inspection.- Inspection shall be in accordance with MTEA-2550. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-_.A- MIL-D-14842 i13 m 9799906 0297397 7 m - - MIL -D-14842 (MU) consist of 23 anodized units for protective fin
18、ish tests, 30 assembled units for ballistics and 10 sets of unassembled components for visual and dimensional examination. The sample shall be manufactured using the same material, equipment, processes, and procedures as used in regular production. All parts and materials including packaging and pac
19、king shall be the same as used for regular production and shall be obtained from the same source of supply. 4.2.1.1 Examination and tests. -After examination and provisional acceptance at source, the sample shall be inspected for all requirements of the drawings and specifications at a Government la
20、boratory or such other facility specified in the contract, 4.2.1.2 Ballistics .-The sample for ballistics tests shall be temperature conditioned and tested to determine compliance with Table I. for firing shall consist of the following: The sample Table Temperature Not Vibrated Vibrated 6 6 6 4 4 4
21、4.2.1.3 Initial production sample failure.-Failure of the sample to conply with the requirements of the drawings and specifications shall result in sample disapproval. 4.3 inspection provisions. 4.3.1 - Lot. 4.3.1.1 Submittal of product. -The contractor shall submit the product in accordance with NI
22、L-STD-105. 4.3.1.2 Size of lot.-A lot shall consist of an identifiable group of delay element assemblies consisting of: a. b. c. Primers from not more than one lot, Components produced by a homogeneous process. Delay charge from not more than one lot. 4.3.2 Examination. -One-hundred percent examinat
23、ion shall be performed Examination for major and minor defects shall be for all critical defects. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-D-1q8q2 13 m 9999906 0277378 7 i MIL-D-14842 (MU) performed on a defect basis in accordance with t
24、he classification of defects, using the sampling plan and associated criteria in Tables III and IV. For an individual defect (single characteristic) , the criteria in Table III shall be used. Four power magnification (4X) may be used in performing visual examination for such defects as burr and fore
25、ign matter. prescribed in ASA-B46.1 shall be used as a basis of comparison for surface roughness determination. All non-conforming material shall be rejected. The roughness comparison specimens Table III Major Minor Lot Size Sample Size Accept Reject Accept Reject i - 300 10% examination - - - - 301
26、 - 1300 110 1 2 2 3 i301 - 3200 150 2 3 3 4 3201 - 8000 225 3 4 4 5 8001 - 22000 300 4 5 5 6 Table IV Total Allowable Defects Per Sample Size Sample Size for Major Defects 110 150 225 300 Number of Defects in Class 2- 3 4- 7 8 - i9 20 - 43 Over 43 2 3 4 3 4 5 4 5 7 5 8 10 8 11 14 Sample Size for Min
27、or Defects 110 150 225 300 2- 3 4- 7 8 - 16 17 - 48 Over 48 2 3 4 5 3 4 5 7 4 5 8 10 6 8 Il 14 8 11 17 20 4.3.2.1 Body, Delay, Dwg. C8594081, covering a detail of Drawing Di0536004i Defect CRITICAL Method of InsDection 1. Diameter of flash hole 2. Metal defective 5 Gage Visual Provided by IHSNot for
28、 ResaleNo reproduction or networking permitted without license from IHS-,-,-1-14842 (MU) Defect MAJOR 101 * 102. 103. 104. 105. 106. 107. 108. 109. 110. 111. 112. 113 Pitch diameter of external thread, Major diameter of external thread, Concentricity of body with pitch Diameter of thread relief Diam
29、eter of step at thread relief Diameter of cavity, Max. Diameter of body, rain. Depth of cavity, inax. Length from cavity face to body Thread damaged or not full Protective finish inadequate or Burr Foreign matter min. min. diameter of thread diameter defect ive 201. 202 * 204. 203. 205. 206. 208. 20
30、9 210, 211, 207. Pitch diameter of thread, max. Diameter of cavity, min. Diameter of body, max. Diameter of wrench holes Depth of cavity, min. Depth of wrench holes Total length Length of thread pilot Length of thread relief Length of step at thread relief Location of .wrench holes 101. Diameter out
31、side, min. 102. Diameter inside, max. Method of InsDection Gage Gage Gage Gage Gage Gage Gage Gage Gage Visual Visual Visual Visual Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage 212. Radius or chamfer missing or incorrect Visual 213. Surface finish improper Visual 4.3.2.2 Gasket, Aluminum,
32、Drawing BB93082, covering a detail of Dwg . D10536004. CRITICAL None defined MAJOR Gage Gage 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NIL-D-148112 13 m 7777906 02771100 3 m Defect - 103. Metal defective 104. Burr 105. Foreign matter MIL-D-l4
33、842(W) Method of Inspection Visual Visual Visual 201. Diameter, outside, mx. 202. Diameter, inside, min. 203. Thickness 204. Surface finish improper Gage Gage Gage Visual 4.3.2.3 Primer, Retainer, Dwg. C8594083, covering a detail of Dwg. Di0536004. CRITICAL 1. Diameter of flash hole 2. Depth of prim
34、er pocket 3. Metal defective MAJOR Gage Gage Visual 101. 102. 103. Pitch diameter of internal thread, mx. Gage Minor diameter of internal thread, max. Gage Concentricity of head with bodv , 104. 105. 106. 107. 108. 109. 110. 111. 112. 113. 114. 115. 116. u7 118. 119. 120. Concentricity of pitch diam
35、eter of Concentricity of primer pocket with Concentricity of recess around primer Diameter of body, min, Diameter of head Diameter of primer pocket Diameter at base of angled recess Diameter of recess around primer Depth of cavity Depth of recess around primer pocket Depth of chamfer at primer pocke
36、t Length of effective thread, min. Location of datum diameter Thread damaged or not full Protective finish inadequate or Surface finish of primer pocket Burr thread with body body pocket with primer pocket pocket defect ive impr Oper Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage Gage G
37、age Visual Visual Visual Visual 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Defect Method of Inspection 121. Foreign matter Visual MINOR 201. Pitch diameter of internal thread, min. Gage 202. Diameter of body, max. Gage 203. Total length Gage 2
38、04. Length of wrench flats Gage 205. Width acrass wrench flats Gage 206. Location of wrench flats Gage 207. Radius or chamfer missing or 208. Surface finish improper, except as incorrect Visual otherwise classified Visual 4.3.2.4 Primer, Percussion, M42, Drawing 8799925, covering a detail of Drawing
39、 D10536004. CRITICAL 1. Improper assembly 2, Any part missing 3. Primer pellet broken, cracked or 4. Metal defective 5. Primer foil discolored 6. Mixed primers dislodged MA SOR 101. Burr 102. Foreign matter MINOR None defined 4.3.2.5 Assembly, Drawing D10536004. CRITICAL 1. Improper assembly 2. Any
40、part missing 3. Primer not seated to full depth of primer pocket 4. Marking missing, incorrect or illegible Visual Visual Visual Visual Visual Visual Visual Visual X-Ray I/ Contents of box exposed. 205. Box damaged 206. Marking missing, incorrect or illegible 207. Number of cartons incorrect 208. St
41、rapping missing, loose, broken or Car seal missing, unsealed or improperly positioned Method of Inspection Manual consequently present hazards in manufacture, handling, storage and shipment, The contractor should recognize these hazards and take appropriate measures to guard and protect against fire
42、, explosion, adverse environment, corrosive atmosphere, rough handling and electrically induced incidents. Custodian: I Army - MU 12 U. S, GOVERNMENT PRINTING OFFICE: 1973-713- 147/1737 Preparing Activity: Army - MU Project No. 1377-A300 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
