1、MIL IYARY SPECIF I CATI ON PRIMER, PERCUSSION, MODIFIED 209, LOADING, ASSEMBLING AND PACKING This specification is approved for use by the U.S. Arrriy Armament Research and Development Corrimand, and is available for use by all Gepartments and Agencies of the Department of Defense. 7. SCOPE I. Scope
2、, This specification covers quality assurance provisions and preparation for delivery for Primer, Percussion, Mceifiei! 209. (See 6.1) 2 APPLICABLE DOCUMENTS 2-1-1 - Specifications _-_- and standards. Unless otherwise specified (see 6.2), the following specifications and stirndards of the issue list
3、ed in that issue of the Department of Defense Index of Specifications and Standards (GcDISS) specified in the solicitation, form a part cf this specification to the extent specified herein. SPECIFICATIONS MILITAY I MIL-A-48078 STANCARDS MIL I TARY MIL-SID-105 - Ammunition, Standard Quality. Assuranc
4、e Provisions, General Specification For. Sampling Procedures and Tables for Inspection by Attributes. 2.1.2 _- Other Government documents I- drawins and pubiications. -_I- Tke following other GovernILent documents, drawings, and publications fc-rrri a part of this cpecificaticn tc he extent specifie
5、 herein. Beneficial comments (recommendations, additions, deletions) and any pertinent data which mny be of use in improvin this document should be addressed to: Commander, US Army Armament Iesearch and Develo ment Command, Attn. DRDAR-QA, Dover, New Jersey 07801 by using te self-addressed Standardi
6、zation Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-70433 (AR) DRAWINGS (See E.4) e . US ARMY ARMAMEEiT RESEARCH AND DEVELOPPBNT COPJGAND 88645t
7、33 - Container, Ammunition, Plastic, for Percussion Primer, M39Al. 0864504 - Box, Wire Bound, Packing, Amniunition, for Percussion Primer M39A1 Level “A“ Packing. 9207697 - BOX, Fiberboard, Packing, Amuniticn, for Percussion Primer, M39A1 Level “C“ Pcking. 9357997 - Primer, Percussion, Modifiez 209,
8、 Assembly. (Copies of specifications, standards, handbooks, drawings, end publications required by manufacturers in connection with specific acuuisition functions shculd be Gbtained from the contractins octivity or BS irected by the ccntracting officer.) the text of this specification an6 the refere
9、nces cite6 herein, the text of this specification shall take precedence. 2.2 %der to precedence. In the event of E conflict ketween 3. REQUIREMENTS 3.1 - Material. Materials shall be in acccr6cnce with the 3.2 Parts. All parts shall comply with applicable itrawingc, 3.3 - Primers. The primers shall
10、compiy with all requirements applicable drawings, specifications and standards. specifications and standards. specified on Drawing (Dwg.) 0357997 all. associate6 drawings, ana with al1 requirements specified in applicable specificztions an6 standards. 3.4 - Sensitivity. The primer assembly shall- fi
11、re without evi.dence of failure when a maximum (max.) of twenty-nine and forty hundredths (29.40) inch cunces (see 6.6) of energy is appliea and shall not fire when a minimum (r,in.) of two an6 ninety-one hur,drecths (2.91) inch-ounces of energy is applied. The test shall be performed as specified i
12、r! 4.5.1. 3.5 Failure to fire (Ducil. The primer assenibly shall not fail e in 4.5.2. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-70Ll33 13 m 7779706 035LlL50 7 m _ MIL-P-70433 (AR) 3.6 First article insEection. - This specification conta
13、ins technical-provisions for first article inspection. Requirements for the submission of first article samples by the contractor shall be as specified in the contract. and loaded in a thorough, workmanlike manner. They shall be free of burrs, chips, sharp edges, dents, punctures, cracks, surface de
14、fects, dirt, grease, rust, corrosion products and other foreign matter. The cleaning method used shall not be ir,juricus to any part, nor shttll the parts be contaminated by the cleaning a.gent. All required markings ahIl be neat and sharply defined. All packing components shall be dry. 3.7 Workmans
15、hip. All parts and assemblies shall be fabricated 4, QUALITY ASSURANCE PROVISIONS 4-1 Responsibility for inspection and standard ouali9 -A- assurance provisions. - Unless otherwise specifies herein or in the contract, the provisions, of MIL-A-48078 shall apply and are hereby made a part of this deta
16、il specification. 4.2 Classification - cf inspections. - The inspection requirements specified herein are classified as follows: a. First article inspection (see 4.3). b. Quality confcrmance inspection (see 4.4). 4.3 First article insEction. 4.3.1 Submissios. The Contractor shall sukmit a first arti
17、cle sample as dsignated by the Contracting Officer for evalution in accordance with provisions of 4.3.2. The first article sample shall consist of the following iterrs in sample quantities as inicated below End Tzible I. - Part Description _. Primer, Percussion, MoCtified 209 9357997 103.5 4.3.2 Ins
18、pections _I- tc be performe-. See MIL-A-48078 and Table I specified herein. 4.3.3 Rejection. See MIL-A-48078. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Pl 8 t ri MIL-P-70433 13 rn 9799906 0354353 9 rn c o -4 (II o) 3 u u a, I h 4 fl, - ci n O
19、 v (II i 3 a, U1 a, .c .u c O 2 a, w .ri ou U a, O iCI u a, !r, c W W cy O b 1 pi I d il c I! c r Y 8 U d P Y a z O 5 3 5 YI u MIL-P-70433 13 m 977990b 0354154 4 m CI ai U u au) Ji c (il J cn w E-i O z 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-
20、,-flIL-P-70LI33 13 = 979790b 035LIL55 b C r ! I P i U h: 2 i- s d P G a, c o ki 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-70433 33 7777706 0354356 U cn 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without licen
21、se from IHS-,-,-MIL-P-70433 13 777790b 0354157 T W rl ri5 tr a ii m 5 u1 -4 3 10 4 i Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-* MIL-P-70433 (AR) 4.4.3 Testing. Testing is described in the First Article and 4.4.4 Inspection equipment. The inspe
22、ction equipment required Quality Conformance Inspection Tables. tc perform the inspections and tests prescribed in this specification is identified in the “Paragraph Reference/Inspection Method“ column in the tables starting with paragraph 4.4.2.1, and the test method paragraph (See 4.5). The contra
23、ctor shall submit for approval inspecticn equipment designs in accordance with the terms of the contract. See Section 6 of MIL-A-48078 and 6.3 herein. * 4.5.1. Sensitivity. The primer assemblies shall be conditioned at a temperature cf seventy-five (75) plus or ninus five (5) degrees Fahrenheit (F.)
24、 for twenty-fcur (24) hours min. prior to performing this test. - The san-,ple c.f seven-hundred (700) primer assemblies shall be eivided into groups of 50 primers each. A group shall be selected, and each primer in the grcup shall be assembled. in the test fixture specified in 44.4, and tested by d
25、ropping a steel ball weighing 1.94 plus or minus .O2 ounces on the firing pin from a height of three and one-half (3.5) inches. The rop heightis nieasure as the 6stance from the bottom of the ball to the tcp of the firing pin. The nuEber of primers that fire, or exhibit a firing failure shall be rec
26、orded. This prccechre shclll be repeated at successively increasing heights of one-half (0.5) inch using a new group of 50 primers at each height urtil a height is reached at which all primers fire in the grcup being tested. The test fixture shall then be set at P height of three (3) inches and the
27、above procedure repeated zt su.ccessively decreasing heights of one-half (0.5) inch, using a new group of 50 primers at each height, until a height is reached at which all priners in the group being tested do not: fire. Acceptance or rejection of the lot shall be determined from calculations hased o
28、n recorded data (see 6.7). All primers subjected tc test sim11 be scrapped. returned to the lot. Untested priners may be Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-r - - MIL-P-70433 13 W 9999906 0354159 3 W I NIL-P-70033 (AR) 4.5.2 Failure to fi
29、re (dudsl. The primer assemblies shll be conditioned at a temperature of seventy-five (75) pius cr minue five (5) degrees Fahrenheit (F.) for twenty-fcur (24) hours min. prior to performing this test, Each prirrier shall be assenbled in the test fixture specified in 4.4.4 and a steel ball weighing 1
30、.94 plus or minus .O2 ounces dropped on the firing pin from a height of 15 inches, max. The nuniber of Frimers that exhibit a firing failure shall be recorded to determine compliance with the requirement. 5. PACKAGING 5.1 Preservation and packaging. - 5.1.1 Level A. The primer assemblies shall be pr
31、eserved and - packaged in accordance with Dwg. 8864583. packaged in accordance with Dwg. 9207697. 5.1.2 -I_- Level C. The primer assembiies shall be preserved anc 5.2 Packing. 5.2.1 Level A. The cor,tainers shall be packed in acccuUance with Dwg. 8864584. 5.2-2 Level C. ?he packages shall be packe6
32、in acccrdance with Dwg. 9207697. accordance with instructione contained on LWgS. 8864583, 8864584 ana 9207697, as applicable. shipped at one time, each lot shall be kept separat, and the division between lots clearly indicated to prevert mixirig cf the J.ots in transit. 5.3 - Markir. Unit and exteri
33、or cofitainers shzll be marked in 5.4 Shippirg. When components frorn more thar, cr;e Pct are 5. NOTES 6.1. Intended use. The assembly covered ,517 this specification is intended for use with Igniter, Time, Blasting Fuse, Weatherproof: M60. 6.2 - Orderinq - data. See KIL-A-48078. 6.3 Submission of i
34、nspect.ion equipment - - - designs _I-.- fcr apEoval. -I EqLipment designs shall be submitted as required Commander, U.S. Army Armament Research an Developnient Ccmmand, (See NIL-A-48078). to: ATTN: DRDAR-QAT-I, Dover, New JErsey 07801. Request letter of submittal shculd state ccntractcr, contract n
35、umber, specification number, item nomenclature, and classification cf defects and tests paragra.ph number. 12 .I Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-F-7043 3 (AR) 6.4 Drawings. Drawings listed in Secticn 2 of this specification under
36、the heading US Army Armament Research and Development Command (ARRADCOM) may also include drawings prepare6 by, and identified as, Edgewood Arsenal, Frankfor6 Arsenal, Reck Island Arsenal or Picatinny Arsenal drawings. originally prepared by these activities are now under the cognizance of ARRADCOM.
37、 - Technical. data e 6.5 Firing - failure. A firing failure is defined as follows: - a. Dud - A failure wherein initiaticn of the primer mixture does not cccur. b. Squib - A failure whereii: the primer mixture burns with Hmgfire - A failure wherein an aucible cielay occurs a hiss or fizz. c. between
38、 the application of energy anC: the detonation report. weight of the ball in ounces. 6.6 - Inch-ounces. The prcauct of drcp height in inches and the 6.7.1 Formula. H average = A plus B plus C s = I times the square rocit cf L minus where: (see 6.7.2) A = the sum of column 3 B = the first drop height
39、 at which all primers nisfired C = One-half the drop height ir,crerr.ent (see 6.8) L = the sum of column 5 M = the square of the sum of column 3 I = the drop height increment E.7.2 Tabuletion of data. Divide a sheet a paper into 5 columns and tabulate the &ta as fcllows: a. Title Cclumn I “Height of
40、 Crop“ and list all drop heights in crder starting with the lcwest height. Do not list the heights at which all elements firec? or misfire6. b. Title Column 2 “Nurr,kier of Failures“ and list the sum of the cumber of elemects that misfired, squibbed cr hangfire (see 6.5) at each intermediate height.
41、 c. Title Coumfi 3 “Decimai FractiGn cf Elements Failing tc Fire at Each Intermediate Height“ an8 record the decirrial fracticn thst failed tc fire at each intermediate height. This nunber is cbtoine6 by dividing the value cbtained under “Number cf Failures“ by the nurrker of elements tested at that
42、 height. Cciculation should be carried cut an recorZe6 tc the nearest one-hunCreth (0.01). I-_ 13 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-70433 (AR) d. Title Column 4 “Standard Deviation Factcr“ and list od e. Title Column 5 “Standard D
43、eviation Factor Times numerals in sequence starting withll.i for as many drop heights as are listed in Column 1. Fraction of Failures“ and, by multiplying each decimal fraction in Cclumn 3 by the number on the same line in Column 4, enter the product on the corresponding Line in Column 5. 6.7.3 - Pr
44、ocedure for -. solva - exuations. - a. To obtain “A“ - Add the values in Column 3 and b. To obtain lBI1 - The first drop height at which all c. To obtain Cl - Divide the drop height increment by 2 Ci. TG obtain L“ - Ad the value in Cclumn 5 and e. To obtain “Er1 - Square the sun of Column 3 an f. To
45、 obtain “1 average“ - Add the values substituted for g. To cbtain s“ - Subtract the value substitute for “MI substitute the sum for “A“. primers failed to firo. and substitute the dividend for C“. substitute the sum for “L“. substitute the sum for “M“. A, E and C. from the value substituted for “L“
46、and then obtain the square root of the difference and then multiply the square root by the height of increment. h. Using the calculated values for “H average“ plus 5s multiplied by the maximum weight of the ball is equal to or less than the rriaxixur, irxh ounce energy value require, and “H average“
47、 minus 3s multiplied by the rr,ir,imum weight of the ball is equal to or greater than the ninimum energy value required, the lot should be considered acceptable for sensitivity. a constant interval in inches between successive drop heights which must be considered in calculating average height an th
48、e standard deviaticn in drop height, whenever it Giffers from cne-half (0.5) inch. 6.8 Eieight -I_- of increment. The height of increment is defined as 6.9 Check test - for pcssible - deterioration -l-_l-_ of2rimers. -. The followingtest is designed to prevent primers that have deteriorated from being assembled into major amniunition items. The test shall be performed on primers from any lot which has been stored under normal conditions for Kore than two (2) years, or under adverse conitions for any period cf time. If the specificati
