1、Y MIL-C-50409(MU) 11 April 1969 MILITARY SPECIFICATION COMPONENTS, METAL, FOR FIBER CONTAINER 105 1. SCOPE 1.1 This specification covers the hardened packing stop and packing stop support for M105A3 fiber container for lO5MM Howtizer ammunition. 2, APPLICABLE DOCUMENTS 2.1 The following documents of
2、 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-A-2550 - Ammunition and Special Weapons; General MIL-1-45607 - Inspection Equipment, Supply and Spec i fi cat i on for. Maintenan
3、ce of STANDARDS FEDERAL TEST METHOD STANDARD NO. 151 - Metals; Test Methods MI LI TAR Y MIL-STD-105 - Sampling Procedures and Tables for MIL-STD-109 - Quality Assurance Terms and Definitions. Inspection by Attributes (ABC-STD-105). FSC - 8ih Provided by IHSNot for ResaleNo reproduction or networking
4、 permitted without license from IHS-,-,-MIL-C-50407 1 m 77777Ob 0286178 b m MIL-C-50409 (MU) MIL-STD-1168 - Lot Numbering of Ammunition MIL-STD-1169 - Packaging, Packing and Marking for MIL-STD-1235 - Single and Multilevel Continuous Sampling Shipment of Inert Ammunition Components Procedures and Ta
5、bles for Inspection by Attributes. DRAWINGS ARMY 9243286 - Support, Stop, Packing 9243287 - Stop, Packing, Hardened PUBLICATIONS ARMY 311-9243286 - Equipment Tabulation (Copies of specifications, standards, drawing and publications required by contractors in connection with specific procurement func
6、tions should be obtained from the procuring activity or as directed by the contracting officer. 3. Requirements 3.1 Material.-Material shall be in accordance with applicable drawing and specification. 3.2 Parts.-The parts shall comply with all requirements specified on Drawings (dwg) 9243286 and 924
7、3287 and with all requirements specified in applicable specification. 3.3 .Workmanship.-All garts shall be dry and free of chips, burrs, dirt, grease, rust and other foreign material. The cleaning method shall not be injurious to any of the parts nor the parts be contaminated by the cleaning agent.
8、3.4 First article inspection.-This Specification makes provisions for first article inspection. Requirements for the submission of first article samples by the contractor shall be as specified in the contract. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license fro
9、m IHS-,-,-MIL-C-50407 81 9777706 0286177 8 1 MI L -C - 5 O 4 O 9 ( MU ) 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection.-Unless otherwise specified in the contract or purchase order, the suaglier is responsible for the performance of all inspection requirements as specified herein.
10、 Except as otherwise specified in the contract or order, the supplier may use his own or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. The Government reqerves the right to perform any of the inspections set fo
11、rth in; the specification where such inspections are deemed naecessary to assure supplies and services conform to prescribed requirements Reference shall be made to Standard MIL-STD-109 in order to define terms used herein. The provisions of Specification MIL-A-2550 shall apply. 4.1.1 Submission of
12、product.-At the time the completed lot of items deliverable under the contract is submitted to the Government 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
13、submitted: a. A statement that the lot complies with all of the quality assurance provisions specified in this specification. b. Drawing and specification number and date, together with an identification and date of changes thereto, c. A statement that all material purchased by the contractor meets
14、requirements, when such material is controlled by Government or commercial specifications referenced in any of the contractual documents, and that certificates of conformance are on file and available for review. d. Number of items in the lot. e. Date submitted. 4.2 First article inspection 4.2.1 Su
15、bmission.-The contractor shall submit a first article sample as designated by the contracting officer for evaluation in accordance with the provisions of 4.2.2, The first article sample shall consist of thirty-five packing stop supports and thirty-five hardened packing stops which have been produced
16、 by the contractor or furnished by a supplie? and which have been manufactured using the same production processes, procedures and equipment which will be used in fulfilling the contract. Of the total submitted;a quantity of ten stops and ten supports shall be furnished hardened, but prior to platin
17、g. The balunce shall be subnlitted fully finished in accordance wi tii the UlJJl1iL.U11(! drawingu and npecificetion6. i.i.1. pttrtr: :itid rnutcrluli, iiicliiding packagina nrid packinK., Elin1 1 bt* obLiriri*d !rom the fiCiin(! source of supply au will be ii:it?LL iri reF:iilur production. lrior t
18、o submission, the contractor nliu.11 inspect tlic orsinple to the degree necessary to ncsurt? thlit it cuntoraiu tu the requirements of the contract n submit ti record of this inspection with the sample, including Provided by IHSNot for ResaleNo reproduction or networking permitted without license f
19、rom IHS-,-,-M IL-C - 5 O 4 09 ( MU ) statements of findings for materials, processes and tests. A sample containing known defects will not be submitted unless specifically authorized, by the Contracting Officer. A first article sample, or por.tion thereof, as directed by the contracting officer, sha
20、ll 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 specification such as to significantly affect product uniformity as determined by the Government. 4.2.2 Inspections to be per
21、formed.-Assemblies and components will be subjected by the Government to any or all 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.-If any assembly fails to conply witn any of the applicable require
22、ments, the first article sample shall be rejected. The Government reserves the right to terminate its inspection upon any failure of an assembly to comply with any of the stated requirements. 4.3 Inspection Provisions 4. 3.1 Lot formation.-The term “inspection lot“ as used in this specification, is
23、defined as an essentially homogeneous collection of units of product from which a representative sample is drawn and inspected to determine conformance with applicable requirements. The sample selected shall represent only that quan- tity of units from which the sample was drawn and shall not be con
24、strued to represent any prior or subsequent quantities Fresented for inspection. Homogeneity shall 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 s
25、ame specification revision, and complies with the provisions for submission of product as specified in MIL-STD-105. Changes to the process, specification, or draw5ng not arfecting safety, performance, interchangeability, or storage, as determined by the Government, shall not be deemed to alter the h
26、omogeneity of an inspection lot. All material submitted for inspection in accordance with this specification 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 r
27、equired, shall be in accordance with MIL-STD-1168. 4.3.2 Examination.-The examinations listed in the following subparagraphs shall be performed on inspection lots (see 4.2.1) of the components or assemblies designated in the applicable paragraph headings. Inspection for critical defects (and major d
28、efects, when so specified) shall be 100 percent. Sampling plans for major and minor defects shall be in 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 AQLc designated herein to the
29、groups of major and minor defects listed, the contractor may elect to apply AQLs to individual defects t Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-using an AQL of 0.40 percent for eac major defect and an AQL of 0.65 percent for each minor defec
30、t. When this method . is elected, it shall be ab.plied to ail of the niajor and minor defects listed in the applicable subparagraph of this section, except where 100 percent inspection is specified, and be docu- mented as part of the contractors inspection system. Equipment necessary for the perform
31、ance of the inspections listed in accordance with 4,3.4. 4.3.2.1 Packing Support (see dwg, 9243286) Categories Defects Critical: None defined Major: Non defined Method of Inspection Minor: AQL 2.5 percent 201. Outside diameter.,.Gage 203. Thickness . .Gage 204. Finish.Visual 205. Evidence of poor wo
32、rkmanship (see 3.3) . .Visuai 202. Inside diameter. . Osge 4.3.2.2 Hardened packing stop (see dwg. 9243287) Critical: None defined Major: None defined Minor: AQL 2.5 percent 201. Outside diameter . Gage 202. Width of slot Gage 203. Radius at back of slot . Gage 204. Thickness Gage 205. Finish.a.oVis
33、ual 206. Evidence of poor workmanship (see 3.3). . visuai shall be Code No. O1001 01002 01003 01004 01005 02001 02002 02003 02004 02005 02006 4.3.3 Testing 4.3.3.1 Hardness of supForts (see dwg. 92432861, Major defect, Code No. 01006. Ten hardened packing stop supports which have not been plated sha
34、ll be randomly; selected for this test. If any sample fails to comply with appl.icable requirements, the lot shall be rejected. The test shall be performed as specified in 4.4.1. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL- C-5 O 409 ( MU ) 4
35、.3.3.2 Hardness of hardened packing stop (see dwg 9243287), Major defect, Code No, 02007. Ten hardened packing stops shall be randomly selected for this test. If ny sample fails to comply with the applicable requirement the lot shall be rejected. The test shall be performed as specified in 4.4.1. 4.
36、3.3.3 Heat treatment of packing stop supports after plating (see dwg. 9243286), Major defect, Code No, 01007, Ten packing stop supports shall be randomly selected for this test. If any sample fails to comply with the applicable requirements, the lot shall be rejected. The test shall be performed as
37、specified in 4.4.2. 4.3.3.4 Heat treatment of hardened packing stops after plating (see dwg. 9243287), Major defect, Code No. 02008. Ten hardened packing stops shall be randomly selected for this test. If any sample fails to comply with the applicable requirements, the lot shall be rejected. The tes
38、t shall be performed as specified in 4.4.2. 4.3.3.5 Yield point of.packing stop supports (see dwg. 9243286), Major defect, Code No. 01008. A test specimen shall be prepared for this test in accordance with the applicable specification. If the specimen fails to meet the applicable requirements, the p
39、roduction which it represents shall be rejected, The test shall be performed as specified in 4.4.3. 4.3.3.6 Yield point of hardened packing stops (see dwg. 92432871, Major defect, Code No. 02009. A test specimen shall be prepared by this test in accordance with the applicable specification. If the s
40、pecimen Eails to meet the applicable requirements, the production which it represents shall be rejected, The test shall be performed as specified in 4.4.3. 4.3.4 Inspection Equipment.-Equipment Tabulation Number ET-9243286 identifies the inspection equipment required to perform the examinations and
41、tests prescribed in this section. The contractor shall design inspection equipment in accordance with the instructions in paragraph 6.3. 4.3.4.1 Government rights to documentation.-Inspection equipment drawings and lists provided and revised in accordance with the requirements of the ET may be used
42、by UOD activities for design, procurement, manufacture, testing, evaluation, production and receiving inspection, overhaul, shipping, storage, identification of stock, ordering and storage of replacement 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-
43、,-,-parts, inspection of items at overhaul, general maintenance of equipment, construction, survey and whenever inspect on equipment drawings are needed. 4.3.4.2 Supply and maintenance.-Supply and maintenance of the equipment listed on the ET shall be in a accordance with Soecification MIL-1-45607.
44、4.3.4.3 Government use of contractors inspection and test equipment.-The contractor shall make available to the Government all inspection and test equipment necessary for determining conformance with contract requirements. Personnel for operating the equipment, and verification of its accuracy, shal
45、l be supplied by the contractor for the performance of examination or test by the Government. 4.4 Test Methods 4.4.1 Rockwell hardness test. The support and hardened stop shall be tested in accordance with Federal Test Method Standard No. 151, Method 243.1. The procedure shall be performed three tim
46、es on each sample, and the hardness reported for the sample shall be the mean of the three results obtained from that sample. This test shall be performed for each lot or each eight hours production, Vhichever represents the smaller quantity of product. 4.4.2 Heat treatment after plating.-Ten plated
47、 samples shall be marked with a heat indicating substance, such as lacquer or paint, prior to final heat treatment. The indicating substance shall be chosen to have a temperature sensitivity of 350 degrees Fahrenheit, plus or minus three percent. The ten parts shall be inspected for the presence of
48、the indicator. The samples shall then be subjected to final heat treatment together with the production lot which they represent. The ten samples shall be inspecte to assure that the indicator gives evidence of having achieved its sensitivity temperature. This test shall be performed for each lot or
49、 each eight hours production, whichever represents the smaller quantity of product. 4.4.3 Yield point.-The packing stop supports and packing stops shall be tested in accordance with Federal Test Method Standard No. 151, Method 211.1. The test shall be performed for each lot or each eight hours production, whichever represents the samller quantity of product. 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license fr
