1、- MIL-E-ILl776A I3 = 7777706 0276753 5 5-3 7-07 MIL-E-l4776A(PA) 23 November 1973 SUPERSEDING MIL-E-l4776(MU) 12 June i968 MILITARY SPECIFICATION EXTENSION, FIN This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 This specification covers
2、 the metal parts for one type of fin extension for use with 6OMM Mortar Cartridges de- signated as Extension, Fin. 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 specif
3、ied herein. SPECIFICATIONS MILITARY c MIL-A-2550 -Ammunition and Special Weapons General Specification for STANDARDS MILITARY MIL-STD-105 -Sampling Procedures and Tables for Inspection by Attributes MIL-STD-109 -Quality Assurance Terms and Definitions MIL-STD-1168 -Lot Numbering of Ammunition MIL-ST
4、D-1169 -Packaging, Packing and Marking, for Shipment of Inert Ammunition Components MIL-STD-1235 -Single and Multilevel Continuous Sampling Procedures and Tables for Inspection by Attributes (ABC-STD-105 ) DRAWINGS ARMY 9215574 -Extension, Fin Provided by IHSNot for ResaleNo reproduction or networki
5、ng permitted without license from IHS-,-,-MIL-E-1477bA 13 W 999990b 027b752 7 MIL-E-l4776A(PA) (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
6、contracting officer.) 3 . REQUIREMENTS 3.1 Material.-Materials shall be in accordance with applicable drawings and specifications. 3.2 Fin Extension.-The fin extension shall comply with ali requirements specified on Drawing (dwg.) 9215574 and with all requirements specified in applicable specificati
7、ons. 3.3 Workmanship.-The fin extension shall be fabricated and finished in a thorough workmanlike manner and shall be free from dirt, grease, chips, oil, corrosion or other foreign matter. any part nor shall the parts be contaminated by the cleaning agent . tains technical provisions for first arti
8、cle inspection. ments for the submission of first article samples by the contractor shall be as specified in the contract. The cleaning method used shall not be injurious to 3.4 First article inspection.-This specification con- Require- 4. QUALITY ASSURANCE PROVISIONS 4.1 General quality assurance p
9、rovisions.-Unless otherwise Except as otherwise specified, the supplier specified in the contract or purchase order, the supplier is responsible for the performance of all inspection requirements as specified herein. may utilize his own facilities or any commercial laboratory accept- able to the Gov
10、ernment. 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 prescribed requirements. be made to Standard MIL-STD-109 in order to define terms used herein. The provis
11、ions of Specification MIL-A-2550 shall apply. 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 information provided is correct and a
12、pplicable to the product being submitted: Reference shall 4.1.1 a. b. Number of units of product inspected. c. d. Drawing, specification number and date, together with A statement that the lot complies with all of the quality assurance provisions specified within this specification. Results obtained
13、 for all inspections performed. an identification and date of changes. 2 - I 1 i Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-E-Lq77bA 13 = 777770b 0276753 7 I MIL-E-14776A (PA) e. Certificates of conformance on all material purchased by the c
14、ontractor when such material is controlled by Government or commercial specifications referenced in any of the contractual documents. f. Number of items in the lot. g. Date submitted. The certificate shall be signed by a responsible agent of the certifying organization. be substantiated by evidenceo
15、f the agents authority to bind his principal. required with subsequent certificates unless, during the course of the contract, this authority is vested certifying organization. The initial certificate submitted shall Substantiation of the agents authority will not be in another agent of the 4.2 Firs
16、t Article Inspection 4.2.1 Submission.-The contractor shall submit a first article sample as designated by the contracting officer for evaluacion in accordance with the provisions of 4.2.2. The first article sample shall consist of 50 parts which have been produced by the contractor or furnished by
17、a supplier and which have been manufactured using the same production pro- cesses, procedures, and equipment which will be used in ful- filling the contract. All parts and materials, including packaging and packing, shall be obtained from the same source of supply as will be used in regular producti
18、on. mission, the contractor shall inspect the sample to the degree necessary to assure that it conforms to the requirements of the contract and submit a record of this inspection with the sample, including statements of findings for materials, pro- cesses, and tests. A sample containing known defect
19、s 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 whenever there is a lapse in production for a period in excess of 90 days or whenever a change occurs in manuf
20、acturing process, material used, drawing or specification such as to significantly affect product uniformity as determined by the Government. jected by the Government to any or all of the examinations or tests specified in this specification and any or all require- ments of the applicable drawings.
21、or all of the applicable requirements, the initial production sample shall be rejected. to terminate its inspection upon any failure of a part in the sample to comply with any or all of the stated requirements. Prior to sub- 4.2.2 Inspection to be performed.-Parts will be sub- 4.2.3 Rejection.-If an
22、y part fails to comply with any The Government reserves the right 4.3 inspection Provisions 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-E-1477bA 13 7779706 0276754 O MIL-E-14 7 7 GA ( PA) 4.3.1 Lot formation.-The term “lot“ as used througho
23、ut this specification refers to an inspection lot, which is defined as an essentially homogeneous collection of units of product from which a representative sample is drawn and inspected to determine conformance of the lot with applicable requirements. The sample selected shall represent only that q
24、uantity of units from which the sample was drawn and shall not be construed to represent any prior or subsequent quantities presented for in- spection, Homogeneity shall be considered to exist provided the lot has been produced by one manufacturer, in one unchanged process using the same materials a
25、nd methods, in accordance with the same drawings, same drawing revisions, same specifica- tions and same specification revisions. Changes to the process, interchangeability, or storage, as determined by the Government, shall not be deemed to alter the homogeneity of the lot. Inspection lots shall co
26、mply with MIL-STD-105. Unless other- wise approved by the contracting officer, the inspection lot size of end items deliverable under the contract shall be not less than the smallest weekly estimate of quantities contrac- tually .scheduled for production during the contract period nor more than the
27、largest monthly quantity contractually scheduled for delivery during the contract period. Inspection lots of components or subassemblies, other than the items of delivery, shall be homogeneous and of a size mutually convenient to both the contractor and the Government inspector. Lot numbering, requi
28、red, 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 4.3.1) of the components or assemblies designated in the applicable paragraph headings. Inspection for critical defects (and major defec
29、ts, 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. An AQL of 0.40 percent for each major defect and an AQL o
30、f 0.65 percent for each minor defect shall be applied to all of the maJor and minor defects listed in the applicable subparagraphs of this section, except where 100 percent inspection is specified. Equipment necessary for the performance of the inspections listed shall be in accordance with 4.3.3. 4
31、.3.2.1 Extension fin (see dwg. 9215574) Categories Defects Critical: None defined. Method Of Inspec tion Ma j or : 101. Concentricity of internal thread to external thread including perpendicularity to faceGage (.CD) 4 as I /-. i Provided by IHSNot for ResaleNo reproduction or networking permitted w
32、ithout license from IHS-,-,-MIL-E-1477bA 13 W 9999906 029b755 2 W I 102. 103. 104 . 105 . 106. 107. 108. 109. no. 111. Minor : 201. 202. 203. 204 . 205. 206. 207. 208. 4.3.3 Depth of internal threads, minGage (CD) Diameter of external thread undercutGage (CD) Length of external thread to shoulder, P
33、itch diameter of external thread, min. Gage (CD) Major diameter of external thread, min. gage gage (CD) Pitch diameter of internal thread, Minor diameter of internal thread, External threads not full for entire circumference of perfect thread Internal threads not full for entire circumference of per
34、fect thread Length of outside diameter.,Gage (CD) max. Gage (CD) max. Gage (CD) rnax.,* Gage (CD) length. . Visual length . Visual Concentricity of outside diameter to external thread including perpendi- cularity to shoulder. . Gage (CD) Outside diameter Gage (CD) Depth of internal thread cavity, ma
35、xGage (CD) Fillet radius of external thread undercut, max. Gage (CD) Length of external thread undercut, max. .eGage (CD) Finish improper. Visual-Tactile Nib length. . Gage (CD) Evidence of poor workmanship (see 3.3)Visual The inspection equipment required to perform the examinations and tests presc
36、ribed in this section- is identified under the “Method of Inspection“ headings in 4.3.2 (see 6.2). 5. PREPARATION FOR DELIVERY 5.1 Packing 5.1.1 Level C.-Packing and marking shall be in accord- 6. NOTES 6.1 Ordering data.-Procurement documents shall specify ance with Standard MIL-STD-1169. the follo
37、wing: .5 . . _I_ . . I._- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-E-1477bA 13 7973706 027b756 4 M a. Title, number and date of this specification. b. Data cards.-Data cards shall be prepared foreach C. Provisions for submission of first a
38、rticle samples. lot in accordance with the information specified in MIL-STD-1167. 6.2 Inspection Equipment Designs.-Inspection equipment designs are of two types-Government Special Inspection Equipment (SIE) designs and contractor designs. SIE designs, if available, are designated by drawing numbers
39、 under the “Method of Inspection“ headings in Section 4. Design responsibility for all other inspection equipment is assigned to the contractor. Equipment to be designed by the contractor is designated CD“. The contractor need not furnish any design when a complete Govern- ment SIE design is provide
40、d. Unless otherwise specified, how- ever, the contractor may submit alternate or modified contractor designs of SIE in accordance with 6.2.2 and 6.2.3 should he elect to do so. 6.2.1 following: SIE designs.-SIE iesigns may consist of any of the a. Detailed drawings which completely depict all inform
41、ation necessary for the fabrication and use of the item of inspection equipment. b. A source control drawing or a specification control drawing as defined in MIL-STD-100. c. An envelope drawing, as defined in MIL-STD-100, that established the criteria which a detail design shall meet. When envelope
42、drawings are specified, the contractor shall prepare designs which comply with the criteria therein. Contractor designs.-Contractor designs are required for all inspection equipment for which SIE designs are not specified and may include commercial equipment which the contractor proposes to use. (Co
43、mmercial equipment is defined as unmodified equipment which is cataloged and available for purchase by the general public.) include appropriate operating instructions, calibration procedures and maintenance proceduraes. Commercial equipment shall be fully described by catalog listings or other memo
44、which provide sufficient information to permit identification and evaluation by the Government and may include illustrations and engineering data. Designs shall be prepared for any special fixture(s) required to be used with commercial, or with SIE designs if not otherwise covered thereby (see 6.2.1
45、). Designs shall be of the category and form- (per MIL-D-1000) specified in the Contract Data Requirements Lists (DD Form 1423). The contractor is referred to MIL-HDBK-204, “Inspection Equipment Design It for guidance. The specification number, paragraph number and defect number if such number has b
46、een assigned shall be referenced on each contractor design together with the component or assembly drawing and revision letter to which the specific design applies. 6.2.2 Contractor designs shall 6 I I i Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-
47、,-MIL-E-l4776A(PA) 6,2.3 Submission of designs for approval.-Contractor designs shall be approved by the Government prior to fabricating or procuring the equipment. Designs shall be submitted for approval in accordance with the stipulations, time frame and distribution specified in the Contract Data
48、 Requirements List (DD Form 1423) or in the contract. Partial submission of inspection equipment designs is permissible and encouraged. However, the completion date for design review will be based on the date of the final submission of designs. Picatinny Arsenal design review will normally be accomp
49、lished within one month after receipt. 6.3 Submission of initial production samples.-Instructions as to the location for evaluation of initial production shall be obtained from the contracting officer. Upon receipt of such re- quest, the contracting officer shall advise Picatinny Arsenal and instructions will be issued accordingly. All inquiries should be forwarded to: Commanding Officer, Picatinny Arsenal, ATTN: SARPA-&A Custodian: Army-PA Prepari
