1、MILITARY SPECIFICATION CASE, CARTRIDGE, 40MM, ml95 PART for 1. SCOPE 1.1 This specification covers the metal part for one type of cartridge case designated as Case, Cartridge, 40MM, ml95 2. APPLICABU DOCUMENTS 2.1 The following documents of the issue in effect on date of invitation for bids or reque
2、st for proposal, form a part of this specification to the extent specified herein: SPECIFICATION MILITARY MIL-A-2550 - Ammunition and Special Weapons, MIL-A-8625 - Arodic Coatings, For Aluminum General Specification for and Aluminum Alloys MIL-1-45607 - Inspection Equipment, Supply and Maintenance o
3、f STANDARDS FEDERAL FED-STD-151 - Metals; Test Methods FSC: i310 4 o Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MILITARY MIL-STD-105 - Sampling Procedures and Tables for Inspection by Attributes (ABC-STD- MIL-STD-109 - Quality Assurance Terms an
4、d Definitions MIL-STD-1168 - Lot Numbering of Ammunition MIL-STD-1169 - Packaging, Packing and Marking for Shipment of Inert Amnunition Components MIL-STD-1235 - Single and Multilevel Continuous Sampling Procedures and Tables for Inspection by Attributes 105) DRAWINGS US ARMY MUNITIONS COMMAND Cartr
5、idge Case, 40m, ml95 - 9207989 PUBLICATIONS ARMY ET-9207989 - Equipment Tabulation (Copies of specifications, standards, drawings and publications required by suppliers in connection with specific procurement functions should be obtained from the procuring activity or as directed by the Contracting
6、Officer). 3 . REQUIREMENTS 3.1 Material.-Materials shall be in accordance with the applicable drawings and specifications and 118 cases that have met the requirements of specification MIL-C-60985 (See 4.3.2.2). specified onl)rawing (Dwg.) 9207989 all associated drawings, and with all requirements sp
7、ecified in applicable specifications. 3.2 Part.-TBe-part shall comply with all requirements 2 O Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-50527 13 W 9777706 0327757 T . MIL-C-50527 (MU) 3.3 Hydrostatic pressure.-The cartridge case, less v
8、ent holes, shall be capable of withstanding a hydrostatic pressure of 48,000 pounds per square inch (psi), minimum (min), without evidence of a rupture of the bottom of the charge cup cavity when tested as specified in 4.4.2. Cases especially prepared for this test shall be identified from regular c
9、ases by painting a red strip around the open end, or any positive identification approved by the procuring activity. apply if the alternative construction is applied. on the base of the cartridge case shall be 67 + 7 on the Rockwell 30 T Scale when tested as specified as in 4.4.T. This requirement d
10、oes not 3.4 Hardness.-The hardness of the area near the mouth and 3.5 Workmanshi .-A11 parts shall be fabricated and finished in a through - workman ike manner. chips, sharp edges, cracks, unblended radii, surface defects, dirt, grease, rust, corrosion products and other foreign matter. The cleaning
11、 methods shall not be injurious to any of the parts nor shall the parts be contaminated by the cleaning agents. for first article testing. by the contractor shall be as specified in the contract. and tests.me contractor shall f orward copies 02 th e results OX any of his examinations or tests to the
12、 designated address as required by the contract. (see 6.4) They shall be free of burrs, 3.6 First article testing.-This specification makes provisions Submission of first article quantity 3.7 Submission of results of contractor-conducted examinations 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibilit
13、y for inspection.-Unless otherwise specified in the contract or purchase order, the supplier is responsible for the performance of all inspection requirements as specified. herein. Except as otherwise specified in the contract or order, the supplier may use his own or any other facilities suitable f
14、or the performance of the inspection requirements specified herein, unless disapproved by the Government. The Government reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescrib
15、ed requirements. Reference shall be made to MIL-STD-109 to define terms used herein. The provisions of MIL-A-2550 shall apply. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-50527 13 W 7777706 0327760 b MIL-c-50527 (Mu) 4.1.1 Submission of p
16、roduct,-At the time the completed lot of items deliverable under the contract is submitted to the Gvernment for acceptance, the contractor shall supply the following information accompanied by a certificate which attests that the information provided is correct and applicable to the product being su
17、bmitted: a. assurance provisions specified in this specification. b. Drawing and specifica*ion number and date, together with identification and date of changes thereto. C. A statement that all material purchased by the contractor meets requirements, when such material is controlled by Government or
18、 commercial specifications referenced in any of the contractual documents, and that certificates of conformance are on file and available for review. The-xerttficate shall be signed by a responsible agent of the certifying organization. be substantiated by evidence of the agents authority to bind hi
19、s principal. be required with subsequent certificates unless, during the course of the contract, this authority is vested in another agent of the certifying organization. A statement that the lot complies with all the quality d. Number of items in the lot. e. Date submitted. The initial certificate
20、submitted shall Substantiation of the agents authority will not 4.2 First article inspection 4.2.1 Submission.-The contractor shall submit a first article quantity as designated by the Contracting Officer for evaluation in accordance with the provisions of 4.2.2. (See 6.1) The first article sample s
21、hall consist of the following: One hundred (100) cartridge cases less vent holes (when applicable). Four (4) test panels and/or parts of case, cartridge for salt spray. All parts submitted shall have been produced by the contractor (or furnished by a supplier) using the same production processes, pr
22、o- cedures and equipment as will be used in fulfilling the contract. All parts and materials, including packaging and packing, shall be obtained from the same sources of supply as will be used in regular a. One hundred thirty-five (135) cartridge cases. b. C. Provided by IHSNot for ResaleNo reproduc
23、tion or networking permitted without license from IHS-,-,-MIL-C-50527 33 7777706 0327763 8 E MIL-C-50527 (Mu) . production. The sample shall be accompanied by certificates of conformance. A first article quantity, or portion thereof, as directed by the Contracting Officer, shall also be submitted wh
24、enever there is a lapse in production for a period in excess of 90 days, or whenever a change occurs in manufacturing process, material used, drawing, specification or source of supply as to significantly affect product uniformity as determined by the Govern- ment. Prior to submission, the contracto
25、r shall inspect the sample to the degree necessary to assure that it conforms to the require- ments of the contract and submit a record of this inspection with the sample. A sample containing known defects will not be submitted unless specifically authorized by the Contracting Officer. 4.2.2 Inspect
26、ions to be performed.-Components will be subjected by the Government to any or all th e examinations or tests specified in this specification and any or all requirements of the applicable drawings . 4.Z2.1 Quantities for first article inspection.-After classification of defects and other inspections
27、 have been performed as specified in 4.2.2, the following qu-antities shall be subjected to the indicated tests: Hydrostatic test of cartridge case.-Each of the one hundred (100) cartridge cases less vent holes shall be subjected to this test. is applied. 4.2.2.1.1 This test does not apply if the al
28、ternative construction 4.2.2.1.2 Hardness.-One hundred (100) cartridge cases shall be subjected to this test. 4.2.2.1.3 Salt s ray.-The four (4) test panels and/or parts of case, cartridge s a + e subjected to this test. 4.2.2.1.4 Diameter of vent holes.-Twenty-five (25) cartridge cases shall be sec
29、tioned and th e diameter of each vent hole measured by any method satisfactory to the Contracting Officer. does not apply if the alternative construction is applied. the applicabie requirements, the first article quantity shall be rejected. The Government reserves the right to terminate its inspecti
30、on upon any failure of an assembly or component in the sample to comply with any of the stated requirements. In the event of the rejection, the Government reserves the right to require the contractor to take corrective action and submit a new first This test 4.2.3 Rejection.-If any component fails t
31、o comply with any of 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-50527 13 W 7777706 03277b2 T a MIL-C-50527 (MU) article quantity or portion thereof. Until a first article quantity is accepted, the contractor is in no way authorized by th
32、e Government to resume regular production unless otherwise directed by the Contracting Officer. 4.3 Inspection provisions 4.3.1 Lot formation.-The term “inspection lot“ as used in this specification is defined as an essentially homogeneous col- lection of units of product from which a representative
33、 sample is drawn and inspected to determine conformance with applicable requirements. The sample selected shall represent only that quantity of units from which the sample was drawn and shall not be construed to represent any prior or subsequent quantities presented for inspection. Homogeneity shall
34、 be considered to exist provided the inspection lot has been produced by one manufacturer, in one unchanged process, in accordance with the same drawing, same drawing revision, same specification and same specification revision and complies with the provisions for submission of product as specified
35、in MIL-STD-105. Changes to process, specification, or drawing not affecting safety, performance, interchangeability, or storage, as determined by the Government, shall not be deemed to alter the homogeneity of an inspection lot. All material submitted for inspection in accordance with this specifica
36、tion shall comply with the homogeneity criteria specified herein regardless of the type of sampling procedure which is being applied to determine conformance with requirements. Lot numbering, as required, shall be in accordance with MIL-STD-1168. 4.3.2 Examination.-The examinations listed in the fol
37、lowing subparagraphs shall be performed on inspection lots (See 4.3.1) of the components or assemblies designated in the applicable para- graph headings. Inspection for critical defects (and major defects, when so specified) shall be 100 percent. Sampling plans for major and minor defects shall be i
38、n accordance with MIL-STD-105 except that continuous sampling plans in accordance with MIL-STD-1235 may be used if approved by the Government. Instead of applying the AWs designated herein to the groups of major and minor defects listed, the contractor may elect to apply Aals to individual de- fects
39、 using an AQL of 0.40 percent for each major defect and an A& of 0.65 percent for each minor defect. When this method is elected, it shall be applied to all of the major and minor defects listed in the applicable subparagraph of this section, except where 100 percent inspection is specified, and be
40、documented as part of the contractors inspection system. Equipment necessary for the performance of the inspections listed shall be in accor- dance with 4.3.4. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-C-50527 13 7779706 0327763 1 I MIL-
41、C-50527 (MU) 4.3.2.1 Case, cartridge (See Dwg. 9207989) .- Categories Defects Method of Code Inspection No (See 6.2) Critical 1. Three (3) or more vent holes blocked or missing AG 01001 Major 101 . Ma Sor: 102 . 103 . i04 . 105. i06 . 107 . 108 . io9 . 110. 111. 112. 113 . i14 . 115 . 116 . 117. 118
42、 . li9 . 10% inspection One (1) or two (2) vent holes blocked or missing AG 01002 AQL 2.50 Percent Hardness Test Concentricity of largest outside diameter with second largest out- side diameter Gage Concentricity of largest inside diameter with second largest out- side diameter Gage Concentricity of
43、 base plug cavity with second largest outside diameter Gage Concentricity of powder charge cup cavity with base plug cavity Gage Diameter of powder charge cup cavity, min. Gage Diameter of base plug cavity Gage Depth from base to bottom of powder charge cup cavity Gage Second largest outside diamete
44、r (See 6.5) Gage Diameter of node Gage Parallelism of open end with base Gage Perpendicularity of base to second largest outside diameter Gage Diameter of vent holes (see 4.3.3.3) Gage Largest inside diameter (see 6.6) Gage Distance to flat of inside projection Gage Diameter of flange, max. Gage Tot
45、al length Gage Burr in vent hole Visual (See 4.4.4) Equipment 01003 01004 01005 01006 01007 01008 01009 O1010 01011 01012 01013 01015 01016 01017 01018 oioig 01020 01014 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-50527 (MU) 120 . 121 . 1
46、22 . 123 . Minor : 201 . 202. 203. 204. 205 206. 207 Unconfined second largest outside diameter Depth of largest inside diameter, min Depth of base plug cavit Metal defective (See 6.77 Thickness of flange Length of base plug seating projection from bottom of base Wall thickness, min. Stamping mislea
47、ding or unidentif i- able Protective coating with bare spot, except anode rack marks Evidence of poor workmanship (See 3.5) except burrs Color incorrect AQL 2.50 Percent Gage Gage Gage Visual Gage Gage Gage Visual Visual Visual Visual 01021 01022 01024 01023 01025 01026 01027 01028 01029 01030 01031
48、 4.3.2.2 Case, cartridge Alternate construction (See Dwg. 9207989) - Categories Critical: Major: 101 . 102 . 103. 104 . 105 . 106 . 107 . 201. 202 . Minor : 203 b Defects None defined AQL 1.00 Percent Concentricity of largest inside diameter with second largest outside diameter Largest inside diamet
49、er (see 6.6) Second largest outside diameter (see 6.5) Parallelism of open end with base Depth of largest inside diameter Unconfined second largest outside diameter Total length AQL 1.50 Percent Protective coating with bare spot except anode rack marks Evidence of poor workmanship, except burrs (see 3.5) Color incorrect Method of Inspection Gage Gage Gage Gage Gage Gage Gage Visual Visual Visual Code No 02001 02002 02003 02004 02005 02006
