1、MIL-W- 14 7 4 2A 17 2aIiLiary 1972 MIL-W-14742 (MU) (MU ) Supers e ding 3 June 1968 MILITARY SPECIFICATION WARHEAD SECTION, GUIDED MISSILE, PRACTICE, M220, ASSEMBLY AND PACKAGING 1. SCOPE 1.1 This specification contains requirements not norm covered by the drawings and provides quality assurance for
2、 the fabrication of parts, assembly and packaging of one type of warhead designated as Warhead Section, Guided Missile, Prac- tice, M220. 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 specificati
3、on to the extent specified herein: SPECIFICATIONS FEDERAL UU-T-106 - Tape, Pressure-Sensitive, Adhesive Masking, Paper UU-T-450 - Tissue, Facial MILITARY MIL-C-45662 - Calibration System Requirements STANDARDS MILITARY MIL-STD-105 - Sampling Procedures and Tables for MIL-STD-1168 - Lot Numbering of
4、Ammunition Inspection by Attributes FSC: 1336 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-1169 - Packaging, Packing and Marking for Shipment of Inert Ammunition Components MIL-STD-1235 - Single and Multilevel Continuous Sampling Procedure
5、s and Tables for Inspection by Attributes DRAWINGS PICATINNY ARSENAL 9260040 - Warhead Section, GM, Practice, M220 (Copies of specifications, standards, drawings and publications required by suppliers in connection with specific procurement functions should be obtained from the procuring activity or
6、 as directed by the Contracting Officer.) 3, REQUIREMENTS 3.1 Material.-Materials shall be in accordance with appli- cable drawings and specifications. 3 . 2 Components and Assemblies. -The components and assemblies shall comply with all requirements specified on drawing (dwg.) 51260040 and with all
7、 requirements specified in applicable specifi- cations. 3.3 Warhead to Missile Assembly Capability.-The warhead shall exhibit capabilities of assembly to the missile when tested as spec- ified in 4.4.1. 3.4 Adhesion and Mar Resistance of Paint,-The paint on the warhead shall not exhibit flaking, pee
8、ling, loss of adhesion, marring or discoloration when tested as specified in 4.4.3. 3.5 Workmanship.-All parts and assemblies shall be fabri- cated in a thorough, workmanlike manner. They shall be free of burrs, sharp edges, cracks, dirt, rust and other foreign matter, The cleaning method used shall
9、.not be injurious to any part nor shall the parts be contaminated by the cleaning agent. Surface coatings shall be continuous. Light scratches not exposing base material shall be ignored, All required markings shall be neat and sharply defined. 2 c . u , = Provided by IHSNot for ResaleNo reproductio
10、n or networking permitted without license from IHS-,-,-MIL-W-14742A 13 W 9999906 0296457 5 3.6 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.
11、 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspection.-Unless otherwise speci- fied in the contract or purchase order, the supplier is respon- sible for the performance of all inspection requirements as spe- cified herein. Except as otherwise specified in the contract or order, the supp
12、lier may use his own or any other facilities suit- able for 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 nece
13、ssary to assure supplies and service conform to prescribed requirements. Submission of Product.-At the time the completed lot of product is submitted to the Government for acceptance, the contractor shall supply the following information accompanied by a certificate which attests that the informatio
14、n provided is cor- rect and applicable to the product being submitted: 4.1.1 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 identification and date of changes thereto. c. A
15、 statement that all material purchased by the con- tractor meets 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. The certificate shall
16、be signed by a responsible agent of the cer- tifying organization. The initial certificate submitted shall be substantiated by evidence of the agents authority to bind his principal. Substantiation of the agents authority will not be required with subsequent certificates unless, durhg the course of
17、the contract, this authority is vested in another agent of the certifying organization. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-W-147q2A 13 7779706 0276L158 7 4; 2. Firse Article Inspection 4.2.1 S&mission.-The contractor shall submit a
18、 first arti- cSe sample to a Government approved facility as designated by the dontracting officer (see 6.4) for evaluation in accordance with the provisions of 4.2.2. The first article sample shall consist of three (3) warhead sections and three (3) complete sets of parts which have been produced b
19、y the contractor or furnished by a sup- plier and which have been manufactured using the same production processes, procedures and equipment which will be used in fulfil- ling the contract. All parts and materials, including packaging and packing, shall be obtained from the same sources of supply as
20、 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 requirements of the contract and shall submit a record of this inspection with the sample, in- cluding statements of findings of tests and exami
21、nations and Cer- tificates of conformance for materials (see 4.1.1.c.). A sample containing known defects will not be submitted unless specifically authorized by the contracting officer. A first article sample, or portion thereof as directed by the contracting officer, shall also be submitted whenev
22、er there is a lapse in production for a period in excess of 90 days, or whenever a change occurs in manufacturing nrocess, material used, drawing, specification or source of supply such as to significantly affect product uniformity as determined by the Government. Inspections to be Performed.-Assemb
23、lies and components will be subjected by the Government to any or all of the examina- tions and tests specified in 4.3.2 and 4.3.3 of this specification and to any or all requirements of the applicable drawings. Ply with any of the applicable requirements, the first article sample shall be rejected.
24、 The Government reserves the right to terminate its inspection upon any failure of an assembly or compo- nent in the sample to comply with any of the stated requirements. In the event of rejection, the Government reserves the right to require the contractor to take corrective action and submit a new
25、 first article sample, or portion thereof. sample is accepted, the contractor is in no way authorized by the Government to initiate regular production unless otherwise direct- ed by the Contracting Officer. 4.2.2 4.2.3 Rejection.-If any assembly or component fails to com- Until a first article 4 Pro
26、vided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-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 o product from which a representative s
27、ample is drawn and inspected to determine conformance with applicable requirements. quantity of units from which the sample was drawn and shall not be construed to represent any prior or subsequent quantities pre- sented for inspection. Homogeneity shall be considered to ex in one unchanged process,
28、 in accordance with the same drawing, same drawing revision, same specification and same specification revision and complies with the provisions for submission of pro- duct as specified in MIL-STD-105, Changes to the process, speci- fication or drawing not affecting safety, performance, inter- chang
29、eability 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 specifi- cation shall comply with the homogeneity criteria specified herein regardless of the type of sampling proced
30、ure which is being applied to determine conformance with MIL-STD-1168. Each inspection lot of complete warhead section metal parts assemblies shall contain: The sample selected shall represent only that provided the inspection lot has been produced by one man y= facturer, a. Ogives from not more tha
31、n one interfix lot number from b. Bodies from not more than one interfix lot number from one manufacturer. one manufacturer. 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 a
32、pplicable paragraph headings. Inspection for critical defects (and major defects, 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
33、by the Government. Instead of applying the AQLs designated herein to the groups of major and minor defects listed, the contractor may elect to apply AQLs to individual defects using an AQL of 0.40 percent for each major defect and an AQL of 0.65 percent for each minor defect. When this method is ele
34、cted, it shall be applied to all the major and minor defects listed in the applicable subparagraph of this section, except wher 100 percent inspection is specified, and be documented as part of the con- tractors inspection system. Equipment necessary for the perfor- mance of the inspections listed s
35、hall be in accordance with 4.3.4. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4.3.2.l -Warheatl Section (see dwg. 9260040). Categories Defects Method of inspection Code No. (see 6.3.4) Critical: None defined. 6 Major : AL 0.40 percent 101. Leng
36、th from tip of ogive to missile mating shoulder, max. Gage - 102. Total runout of ogive to Datums A and B Gage Minor : AQL 1.50 percent 201. Marking missing or illegible Visual 202. Protective coating not as specified . Visual 203. Evidence of poor workmanship (see 3.5) . Visual 4.3.2.2 Body (see dw
37、g. 9260039). Categories Defects Method of Inspection Critical: None defined. Major : AQL 1.00 percent 101. Circular runout of ogive mating 102, Circular runout of missile mating diameter to Datum A Gage 103. Outside diameter Gage 104. Length of missile mounting flange . Gage 105. Perpen-dicularity o
38、f ogive mating shoulder to Datum A Gage 106. Perpendicularity of missile mating shoulder to Datum A Gage 107. Presence of chromate finish . Visual 108. Inside corner radius of missile skin mating shoulder, max. Gage diameter to Datum B . Gage O1001 01002 O 100 3 01004 01005 Code No. (see 6.3.4) 0200
39、1 o 200 2 02003 O 200 4 02005 02006 02007 02008 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-W-14742A (MU) . Minor : AQL 0.65 percent 201. Evidence of poor workmanship (see 3.5).a.00Visual 02009 4.3.2.3 Ogive, Missile (see dwg. 9260038) Code N
40、o. Method of Categories Defects Critical: None defined. Inspection - - _c_ Ma j or : AQL 1.00 percent 101. Total runout of ogive nose to Datums A and BGage 03001 102. Circular runout of ogive outside diameter to Datum A.Gage 03002 103. Length of ogive.Gage 03003 104. Contour of ogiveGage 03004 105.
41、Perpendicularity of ogive base to Datum A Gage 03005 106. Presence of protective finish.Visual 201. Evidence of poor workmanship 03006 Minor: AQL 0.65 percent (see 3.5).Visual 03007 4.3.3 Testing 4.3.3.1 First Article Sample (see 4.2.1).-The units and parts submitted as the first article sample shal
42、l be tested as specified below after having been examined for requirements as specified in 4.2.2. accordance with 4.2.3. Rejection and resubmission shall be in 4.3.3.1.1 Weight (see dwg. 9260040 and 4.3.3.2.1). 4.3.3.1.2 Radial Center of Gravity (see dwg. 9260040)-Minor Defect-Code No. 01009.-This t
43、est shall be performed on each assembly using equipment in accordance with 4.3.4. -Minor Defect-Code No. 01010.-This test shall be performed on each assembly using equipment in accordance with 4.3.4. 4.3.3.1.3 Longitudinal Center of Gravity (see dwg. 9260040) 7 Provided by IHSNot for ResaleNo reprod
44、uction or networking permitted without license from IHS-,-,-4.3.3.1.4 4.3.3.1.5 Ogive-Body Joint Torque Test (see dwg. Functional Examination for Missile Assembly see 3.3 and 4.3.3.2.4). 9260040 and 4.3.3.2.5). 4.3.3.1.6 Adhesion and Mar Resistance of Paint (see 3.4) -Maoy-Defects-Code Nos . 01006 a
45、nd 01007 .-These tests shall be performed on each assembly, The test shall be performed as specified in 4.4.3 using equipment in accordance with 4.3.4. 4.3.3.2 Production 4.3.3.2.1 Weight (see dwg. 9260040) -Major Defect-Code No, 01008.-This determination shall be performed 100 percent using test eq
46、uipment in accordance with 4.3.4. Any assembly failing to meet the requirement shall be classed defective and removed from the lot. 4.3.3.2.2 Functional Examination for Missile Assembly see 3.3) -Major Defect-Code No, 010 Il,-This test shall be performed 100 percent as specified in 4.4.1 using equip
47、ment in accordance with 4.3.4. Any assembly not conforming to the requirements shall be classed defective and removed from the lot . 4,3.3.2.3 Ogive-Body Joint Torque Test (see dwg. 9260040) -Major Defect-Code No. 01012,-This test shall be performed 100 percent as specified in 4.4.2 using equipment
48、in accordance with 4.3.4. shall be classed defective and removed from the lot. Any assembly not conforming to the requirements 4.3.3.2.4 Adhesion and Mar Resistance of Paint (see 3.4) -Major Defects-Code Nos, 01006 and 01007,-The sampling plan for these tests shall be in accordance with MIL-STD-105,
49、 using Inspection Level II with an AQL of 0.40 percent. An inspection lot for this examination shall consist of those warheads or components painted in one day, These tests shall be performed as specified in 4.4.3 using equipment in accordance with 4.3.4. 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-W-14742A 13 9399906 02761163 O 4.3.4 Insp
