1、INCH- POUND I MIL-C-71150 (AR) AMENDMENT 5 SUPERSEDING AMENDMENT 4 11 February 2000 9 September 1998 MILITARY SPECIFICATION CARTRIDGE, 60MM PRACTICE, SHORT RANGE, M766 LOADING, ASSEMBLING AND PACKING This amendment forms a part of MIL-C-71150 (AR), dated 1 November 1993, and is approved for use by t
2、he U.S. Army Armament Research, Development and Engineering Center, and is available for use by all Departments and Agencies of the Department of Defense. PAGE 2 DRAWINGS, Delete: 6.5” , and substitute: 6.4”. Delete: QUALITY ASSURANCE PROVISIONS . QAP Cl2961001 - Dud Plug” . PAGE 4 3.3.7.2 Delete in
3、 its entirety. 3.4.4: Delete in its entirety and substitute: “3.4.4 Range and deflection precision. The cartridge shall have a horizontal range probable error (PEr) less than 15 meters for all zones when calculated to the nearest one tenth (0.1) meter. The deflection probable error (PEd) shall be le
4、ss than 15 meters for all zones when calculated to the nearest one tenth (0.1) meter) .I1 1 of 7 AMSC N/A FSC 1315 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C
5、-71150 (AR) AMENDMENT 5 PAGE 5 3.4.9.1: Delete in its entirety and substitute: “3.4.9.1 Functioned round. All dud plug heads (regardless of stems) shall blow out of the projectile body upon fuze function. 3.4.9.2: Delete in its entirety and substitute: “3.4.9.2 Inert round. No dud plug head (regardl
6、ess of stems) shall exit the projectile body during ballistic flight or upon impact.“ PAGE 6 4.3.3, delete requirement Ilb.“ in its entirety and substitute: “b. Three or more duds occur.11 Delete Ilg.Il and iih.ll in their entirety and substitute: Ilg. If the weapon is damaged by abnormal wear of th
7、e interior or of the firing pin, or caused by excessive pressure. h. Two or more improper impact signatures occur.11 Add the following: 11 1 . All three dud plug heads (regardless of stems) are missing from the projectile body in the inert fuze ballistic test. j. More than one dud plug head (regardl
8、ess or stems) remains in a single projectile body upon fuze function except in the case of a particular round that was an actual dud. In this case, paragraph Ili.“ Above applies. PAGE 7 Table I, Delete under Dud Plug and subsitute the following: “Dud Plug . . . (dwg. 12988971) Examination for defect
9、s . lO(a) . 3.1 . 4.4.2.9 Add Note: !(a) Ten (10) samples are required from each mold cavity. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-71150 (AR) AMENDMENT 5 * Table I, Delete: IlPlug, Increment“ and substitute: “Increment Plug“ Delete
10、: Ii(Dwg. 12944200)“ and substitute: Ii(Dwg. 12991840) PAGE 10 4.4.2.1, Major 105: Delete: “Length of large outside diameter section“, and substitute: “Length between large outside diameter aft face to firing pin point!. PAGE 13 4.4.2.3, Major 102: Delete the word Ilexcessive“ and substitute the wor
11、d Ilinadequate“ . PAGE 14 * 4.4.2.4, Delete Title: “Plug, Incrementll and substitute: Increment Plugll Delete Dwg. Number: “12944200“ and substitute: “12991840“ Add Major Defect 107 Under Examination or Test: IIIncrement plug pull test“ Under Conformance Criteria: “V“ Under Requirement Paragraph : I
12、l3 .3 .5 Under Inspection Method Reference: IlTestIl Add Major Defect 108 Under Examination or Test: “Longitudinal length of slit“ Under Conformance Criteria: Under Requirement Paragraph: ii3.111 Under Inspection Method Reference: iiGagell 3 Provided by IHSNot for ResaleNo reproduction or networking
13、 permitted without license from IHS-,-,-MIL-C-71150 (AR) AMENDMENT 5 CLASSIFICATION Critical 1 PAGE 14 (contd) EXAMINATION OR TEST Fuze striker in armed positic Add Minor Defect 204 2 3 Major 108 109 110 111 112 Under Examination or Test: “Width of slit“ Breech plug assembly firing pin not below flu
14、sh after assembly to round Powder from energetic cartridges found on outside ( round Obturator ring missing Fin tail cracked, damaged or distorted Fuze packing clip missing or improperly assembled Cartridge assembly fails to fully enter complete round alignment gage Any dud plugs missing Under Confo
15、rmance Criteria: Under Requirement Paragraph: ii3.111 Under Inspection Method Reference: iiGagell PAGE 15 4.4.2.5: Delete Specials A, BI Cl Dl E, F and G in their entirety and add the following: CONFORMANCE CRITERIA 100% 100% 100% 100% 100% 100% 100% 100% REQUIREMENT PARAGRAPH 3.3.4 3.3.3 3.1 3.3.2
16、3.1 3.1 3.3.1 3.3.7 INSPECTION METHOD REFERENCE Gage Gage Visual Visual Visual Visual Gage (b) Vi sua 1 II Under Notes: Delete (a)“ and substitute (b)“. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-71150 (AR) AMENDMENT 5 PARAGRAPH Il4.4.2.
17、9 CLASSIFICATION CRITICALNone MAJOR 101 102 103 104 105 MINOR 201 202 NOTES: (a) PAGE 18 UMYYIIYU IY“I“IDcln 12988971 TITLE NEXT HIGHER ASSEMBLY Dud Plug SHEET 1 of 1 CONFORMANCE REQUIREMENT INSPECTION METHOD EXAMINATION OR TEST CRITERIA PARAGRAPH REFERENCE defined Outside diameter of plug head (a)
18、3.1 Gage Thickness of plug head (a) 3.1 Gage Outside diameter of plug stem (a) 3.1 Gage Inside diameter of plug stem (a) 3.1 Gage Length from head flat to end of stem (a) 3.1 Gage Poor workmanship 30 3.6 Visual Stem slit missing (a) 3.1 Visual 20 samples from each mold cavity shall be examined for t
19、his feature 4.4.2.6: Delete Special A in its entirety. Add the following: “Major 101 Packing clip missing from fuze . 100% . 3.2 . Vi sua 1 PAGE 20 4.4.2.9 Delete in its entirety and substitute: PAGE 21 4.4.3.1.1: Delete “c.“ in its entirety and substitute: !IC. Short rounds, Major defect (see 3.4.2
20、) . Il. Delete “c.“ in its entirety and substitute: lie. Metal parts separation, Major defect (see 3.4.3) .I1. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-71150 (AR) AMENDMENT 5 PAGE 21 (contd) Delete i.,/ in its entirety and substitute:
21、11 1 . All dud plug heads out of any one projectile in the inert fuze ballistic test, Critical defect (see 3.4.9.2) .Il. Add the following: IIj. More than one dud plug head (regardless of stems) remains in a single projectile body after fuze function in the live fuze ballistic test, Major defect (se
22、e 3.4.9.1) .Il 4.4.3.1.2: delete requirement Ilb.“ in its entirety and substitute: “b. Three or more duds occur.11 Delete Ili.“ And IIj .I1 in their entirety and substitute: 11 1 . All three dud plug heads (regardless of stems) are missing from the projectile body in the inert fuze ballistic test. j
23、. More than one dud plug head (regardless of stems) remains in a single projectile body upon fuze function except in the case of a particular round that was an actual dud. In this case, paragraph Ili.“ above applies. PAGE 22 4.5.1.1, first paragraph, after second sentence: Add the following: All rou
24、nds shall be fired onto a flat, nongrassy earthen surface that is not marshy or frozen.“ PAGE 23 Add the following: “4.5.1.3: Accuracy. The individual defelctions and ranges shall be recorded to an accurancy of both to 0.01 meter. Range probable error shall be calculated to the nearest 0.1 meter.“ 4
25、.5.5, Delete in its entirety. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-71150 (AR) AMENDMENT 5 PAGE 24 5.3.1: Delete: ”12944136”, and substitute: 12953578”. PAGE 25 6.9 Add the following: 6.9 Inspection lot definition. A homogeneous col
26、lection of units of product or one shipment of component parts or assemblies from a subcontractor, bearing identification and treated as a unique entity from which a sample is to be drawn and inspected (and tested) to determine conformance with the acceptability criteria.” 6.10 Delete in its entiret
27、y. * 6.11 Delete in its entirety. 6.12 Add the following: 6.12 Marshy ground. Marshy ground is defined as an earthen surface that contains standing water or free flowing - - (fluid) mud or a combination of both.” 6.13 Add the following: 6.13 Frozen ground. Frozen ground is defined as earthen ground
28、within which water has frozen creating a hard surface.” The margins of this amendment are marked with an asterisk, or vertical line to indicate where changes (additions, modifications, corrections, deletions) from the previous amendment were made. This was done as a convenience only and the Governme
29、nt assumes no liability whatsoever for any inaccuracies in these notations. Bidders and contractors are cautioned to evaluate the requirements of this document based on the entire content irrespective of the marginal notations and relationship to the last previous amendment. Custodian: Army-AR Preparing activity: Army-AR (Proj ect 13 15 - 0242 ) 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
