1、MIL-D-Lq707 i13 739790b 0276320 O s-31 - (33 . . . MIL-D-14707 MU) -= - - - 23 February 1968 MILITARY SPECIFICATION DISCRIMINATOR, ANTI-TANK MINE, M2 AND SPOOL ASSEMBLY 1. SCOPE 1.1 This specification covers the assembly of one type of discriminator, designated as Discriminator, Anti-Tank, Mine M2 a
2、nd Spool Assembly. 2. APPLICABLE DOCUMENTS 2.1 The following documents of the issue in effect on date of invitation for bids or request for proposals, form a part of this specification to the extent specified herein. SPECIFICATIONS MILITARY MIL-A-2550 - Ammunition and Special Weapons, General MIL-1-
3、45607 - Inspection Equipment, Supply and Specification for Maintenance of STANDARDS FEDERAL FED-STD-406 - Plastics: Methods of Testing MILITARY MIL-STD-105 - Sampling Procedures and Tables for MIL-STD-109 MIL-STD-1167 - Ammunition Data Cards MIL-STD-1168 - Lot Numbering of Ammunition MIL-STD-1169 -
4、Packaging, Packing and Marking for Inspection by Attributes (ABC-STD-105) - Quality Assurance Terms and Definitions Shipment of Inert Ammunition Components FSC: 1345 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-1235 - Single and Multilevel
5、 Continuous Sampling Procedures and Tables for Inspection by Attributes DRAWINGS U. S. ARMY MUNITIONS COMMAND 9207428 - Connector, 2 Contact Female 9221336 - Discriminator, Anti-Tank, Mine: M2 and 9231950 - Steel, Spring, Copper Coated 9231962 - Discriminator, AT, Mine: M2 Spool Assembly PUBLICATION
6、S U. S. ARMY MUNITIONS COMMAND ET - 9221336 - Equipment Tabulation Number (Copies of specifications, gltandards, 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 officer)
7、 . 3. REQUIREMENTS 3,l Materials and parts.- Materials and parts shall be in accordance with applicable drawings and specifications. 3,2 Assembly.- The assembly shall comply with all requirements specified on Drawing (dwg,) 9221336 and with all requirements specified in applicable specifications. 3,
8、3 Continuity and resistance of assembly (dwg. 9231962) .- The resistance of the discriminator assembly shall be five ohms, maximum, when tested as specified in 4.4.1. 3.4 Discriminator.- The discriminator shall comply with the following requirements throughout the temperature range of minus 25 degre
9、es Fahrenheit (F.) to plus 120 degrees F, 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-D-14707 (MU) 3.4.1 Functioning of discriminator.- The discriminator shall function when a force of 8 pounds, maximum, is applied to each of any two adjace
10、nt discriminator segments. as specified in 4.4.2. The test shall be performed 3.4.2 Non-functioning of discriminator.- The discriminator shall not function when a force of one pound, minimum, is applied to any two adjacent discriminator segments. The test shall be performed as specified in 4.4.3. 3.
11、4.2,l Individual segments.- The discriminator shall not function when a force of eight pounds, minimum, is applied to any active discriminator segment when tested as specified in 4.4,4. down of insulacion or closed circuits between conductors of the discriminator when tested as specified in 4.4,s. 3
12、.4.3 Voltage breakdown.- There shall be no evidence of break- 3.5 Air leakage.- The discriminator shall show no evidence of 3.6 Workmanship.- All parts shall be fabricated and finished air leakage when tested as specified in 4.4.6, in a thorough, worhanlike manner. They shall be free of burrs, sharp
13、 edges, cracks, chips, scale, dirt, grease, rust, and other foreign material. part nor shall the parts be contaminated by the cleaning agent. Exterior surface coatings shall be continuous except for a few light scratches not exposing base material. All required markings shall be neat and sharply def
14、ined. wires or of torn, frayed, or broken insulation, provisions for first article inspection. Requirements for the submission of first article samples by the contractor shall be as specified in the contract. The cleaning agent shall not be injurious to any There shall be no evidence of bare 3.7 Fir
15、st article inspection.- This specification makes 4. QUALITY ASSURANCE PROVISIONS 4.1 General quality assurance provisions.- 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 othe
16、rwise specified,. the supplier may 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-utilize his own facilities or any commercial laboratory acceptable to the Government. The Government reserves the right to perform any of the inspections set forth i
17、n the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. Reference shall be made to Standard MIL-STD-109 in order to define the terms used herein. The provisions of Specification MIL-A-2550 shall apply. Submission of product.
18、- At the time the completed lot of product is submitted to the Government for acceptance the con- tractor shall supply the following information accompanied by a certificate which attests that the information provided is correct and applicable to the product being submitted: a, A statement that the
19、lot complies with all quality assurance provisions specified within this specification. b, Nwnber of units of product inspected. c, Results obtained, by defect code, for all inspections performed. d. Drawing, specificatSon number and date, together with an identification an8 date of changes, e, Stat
20、ement of findings on fungus resistance of fully com- pounded insulation material prior to extruding and molding and Certificates of aonformance on all material purchased by the con- tractor when such material ia controlled by Government or commercial specifications referenced in any of the contractu
21、al documents. The certificate shall be signed by a responsible agent of the certifying organization. The initial certificate submitted shall be substantiated by evidence of the agents authority to bind his principal. required with subsequent certificates unless, during the course of the contract, th
22、is authority is vested in another agent of the certifying organization. 4.1.1 . f, Number of items in the lot. g. Date submitted. Substantiation of the agents authorit9 will not be 4.1.2 Government verification.- Using the contractors written quality assurance procedure, this detail specification, t
23、he applicable drawings and other contractual documents as a guide, the Government inspector shall verify at unscheduled intervals all quality assurance operations performed by the Contractor. Verifi- cation will be performed to the extent necessary to assure compliance with the contractual requireme
24、nts, Severity of Government 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-D-14707 (MU) inspection of individual characteristics will be directly related to the seriousness f the classification assigned. will a characteristic classified “criti
25、cal“ be accepted solely on the basis of the contractors records. In no instance 4.2 First article inspection 4.2,1 Submission.= The contractor shall submit a first article I sample as designated by the contracting officer for evaluation in accordance with the provisions of 4.2.2. The first article s
26、ample shall consist of 15 assemblies and 15 complete sets of parts (i.e. 15 each of every component and every sub-assembly) which have been produced by the contractor or furnished by a supplier and which have been manufactured using the same production processes, procedures, and equipment which will
27、 be used in fulfilling the contract. parts and materials, including packaging and packing, shall be obtained from the same source of supply as will be used in regular production, Prior to submission, the contractor shall inspect the sample to the degree necessary to assure that it conforms to the re
28、quirements of the contract and submit a record of this inspection with the sample, including certificates of conformance for materials, (see 4.l.le). submitted unless specifically authorized, by the Contracting Officer. A first article sample, or portion thereof, as directed by the con- tracting off
29、icer, shall also be submitted whenever 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 or specifi- cation such as to significantly affect product uniformity as determined by the Government. All A sample con
30、taining known defects will not be 4.2.2 Inspections to be performed.- Assemblies and components will be subjected by the Government to any or all of the examinations or tests specified in 4.3.2 and 4.3.3 of this specification and any or all requirements of the applicable drawings. 4.2.3 Rejection.-
31、If any assembly or component fails to comply with any of the applicable requirements, the first article sample shall be rejected. The Government reserves the right to terminate its inspection upon any failure of an assembly or component to comply with any of the stated requirements. 5 Provided by IH
32、SNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4.3 Inspection provisions 4.3.1 Lot formation.- The term lot as used throughout this specification refers to an inspection lot, which is defined as an essentially homogeneous collection of units of product from which
33、 a representative sample is drawn and inspected to determine con- formance of the lot with applicable requirements. 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 inspectton
34、. shall be considered to exist provided the lot has been produced by one manufacturer, in one unchanged process, in accordance with the same drawing, specification, or revision thereof. Changes to either the process, specification, or drawing not affecting safety, performance, interchangeability, or
35、 storage, as determined by the Government inspector, shall not be deemed to alter the homogeneity of the lot. Each lot shall contain: a. Parts of one lot interfix number from one manufacturer. b. Compounded insulation material from one lot from the same manufacturer. Inspection lots shall comply wit
36、h MIL-STD-105 and shall be numbered in accordance with MIL-STD-1168. Unless otherwise approved by the contracting officer, the inspection lot size of major assemblies or end items deliverable under the contract shall be not less than the smallest weekly estimate of quantities contractually scheduled
37、 for production during the contract period nor more than the largest quantity contractually scheduled for delivery during any month of the contract period, other than the items of delivery, shall be homogeneous and of a size convenient to the contractor. The sample . Homogeneity - Inspection lots fo
38、r components or sub-assemblies, 4.3.2 Examination.- Sampling plans and procedures for the following classification of defects shall be in accordance with MIL-STD-105 except that inspection for critical defects (and majors, when so specified) shall be 100 percent. Contractors sampling plans, if used,
39、 shall be approved by the Government and shall provide as a minimum, the protection afforded the Government by the sampling plans in MIL-STD-105. Continuous sampling plans in accordance with MIL-STD-1235 for defects other than critical may be used if approved by the procuring activity. Also, at the
40、option of the procuring activity, Aus and sampling plans may be applied to the individual characteristics listed using an AQL of 0.40 6 , Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- . MIL-D-14707 13 77979Ob 029b326 1 MIL-D-14707 (MU) percent for
41、 each major defect and an AQL of 0.65 percent for each minor defect. inspections listed shall be in accordance with 4.3.4. Equipment necessary for the performance of the 4.3.2.1 Contact (see dwg. 9204869 covering a detail of dwg. 9221336). Categories I Defects Code No. Method of Inspection (see 6.2)
42、 Critical: None defined Major: AQL 0.40 percent 101. Outside diameter Gage O1001 102. Knurl missing. Visual O1002 Minor: AQL 0.65 percent 101. Evidence of poor workmanship (see 3.6) . Visual 01003 4.3.2.2 Cable see dwg. 9207416 covering a detail of dwg. 9221336) . Categories Defects Method of Code N
43、o. Inspection Critical: None defined Major: AC a. Title, number and date of this specification. b. in accordance with the information specified in Standard c. Data cards,-Data cards shall be prepared for each lot Submission of first article quantity.7Instructions MIL-STD-1167, as to the location of
44、the facility at which the evaluation of the first article quantity shall be carried out, may be obtained from the contracting officer. 6.2 Inspection code numbers.-The five digit code numbers assigned to the inspections herein are to facilitate future data collection and analysis by the Government.
45、6.3 Inspection equipment.-The contractor shall design ins ection equipment as required by the referenced Equipment Lists (ELY in accordance with the instructions of paragraphs 6.3.1 through 6.3.7, 16 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-6.
46、3.1 Equipment Lists.-Equipment part or Identifying lists indicate the availability of inspection equipment designs by showing in the *number“ column of the list of inspection equip- ment (SMUPA Form 1010) the numbers of drawings of existing equipment designs or codes as indicated in paragraph 6.3.2,
47、 required of the contractor with respect to the different types of drawings that may be listed is described in paragraphs 6.3.3 through 6.3.6. commercial inspection equipment is described in 6.3.5. The contractor will be required to prepare detailed drawings in accordance with 6.3.6 for all the equi
48、pment coded as Contractor Design“ in the number column. approved by the Government prior to fabrication or procuring of the equipment. specified in 6.3.7. Design action Action required by the contractor with respect to These contractcr designs must be Designs shall be submitted for approval as 6.3.2
49、 Inspection equipment list codes.-The inspection equipment as defined in 6.3.3, 6.3.5 and 6.3.6 will be designated in the EL by the following codes. Other inspection equipment listed on the EL and not coded are defined in 6.3.4. Mu - Army design, mandatory for use. GD - Contractor design andor commercial equipment on contractor format for Government approval as specified in 6.3.7), (Requires submission 6.3.3 Army design
