1、 INCH-POUND MIL-DTL-70438A(AR) 8 September 2008 SUPERSEDING MIL-P-70438(AR) 16 October 1984 DETAIL SPECIFICATION Plug Assembly, Lifting, Universal Inactive for new design after 21 August 1998 This specification is approved for use by the U.S. Army Armament Research Development and Engineering Center
2、 (ARDEC), and is available for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers requirements for the manufacturing and assembly of Universal Lifting Plugs for 155MM projectiles (see 6.1). AMSC N/A FSC 1320 DISTRIBUTION STATEMENT A. Appro
3、ved for public release; distribution is unlimited. Comments, suggestions, or questions on this document should be addressed to the Commander, U.S. Army ARDEC, ATTN: AMSRD-AAR-QES-E, Picatinny, NJ 07806-5000 or emailed to ardecstdznconus.army.mil. Since contact information can change, you may want to
4、 verify the currency of this address information using the ASSIST Online database at http:/assist.daps.dla.mil. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-70438A(AR) 22. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this sect
5、ion are specified in sections 3 and 4 of this specification. This section does not include documents cited in other sections of this specification or recommended for additional information or as examples. While every effort has been made to assure the completeness of this list, document users are ca
6、utioned that they must meet all requirements documents cited in sections 3 and 4 of this specification, whether or not they are listed. 2.2 Government documents. 2.2.1 Specifications, standards and handbooks. The following specifications, standards and handbooks form a part of this document to the e
7、xtent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. FEDERAL SPECIFICATIONS TT-C-490 - Chemical Conversion Coatings and Pretreatments for Ferrous Surfaces (Base for Organic Coatings) DEPARTMENT OF DEFENSE STANDARDS MIL-STD
8、-1168 - Ammunition Lot Numbering and Ammunition Data Cards MIL-STD-1916 - DoD Preferred Methods for Acceptance of Product (Unless otherwise indicated, Copies of these documents are available online at http:/assist.daps.dla.mil/quicksearch/ or from the Standardization Document Order Desk, 700 Robbins
9、 Avenue, Building 4D, Philadelphia, PA 19111-5094.) 2.2.2 Other Government documents, drawings and publications. The following other Government documents, drawings and publications form a part of this document to the extent specified herein. Unless otherwise specified, the issues are those cited in
10、the solicitation or contract. US ARMY ARMAMENT RESEARCH, DEVELOPMENT AND ENGINEERING CENTER (ARDEC) DRAWINGS 9345325 - Plug, Universal Assembly 9347368 Plug, Universal 9215391 Ternary Eutectic Alloy 9215393 Adhesive-Sealing Compound Provided by IHSNot for ResaleNo reproduction or networking permitte
11、d without license from IHS-,-,-MIL-DTL-70438A(AR) 3(Copies of these drawings may be requested online at Drawing-Requestpica.army.mil or from U.S. Army ARDEC, ATTN: AMSRD-AAR-AIS-TD, Picatinny, NJ 07806-5000.) 2.3 Non-Government Publications. The following documents form a part of this document to th
12、e extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. ASTM INTERNATIONAL ASTM D950 Standard Method of Test for Impact Strength of Adhesive Bonds (Copies of these documents are available online at http:/www.astm.org or fr
13、om ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA 19428.) 2.4 Order of precedence. Unless otherwise noted herein or in the contract, in the event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in
14、this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 Required inspections. 3.1.1 First article. When specified (see 6.2), a sample shall be subjected to first article inspection in accordance with 4.2. 3.1.2 Conformance
15、. A sample shall be subjected to conformance inspection in accordance with 4.3. 3.2 Components and assemblies. The components and assemblies shall comply with all requirements specified on drawing 9345325. 3.2.1 Plug, Universal. The materials, components and assemblies shall be in accordance with dw
16、g. 9347368. 3.2.2 Universal plug assembly (prior to pouring alloy). The materials, components and assemblies shall be in accordance with dwg. 9345325. 3.2.3 Universal plug assembly (after pouring alloy). The materials, components and assemblies shall be in accordance with dwg. 9345325. Provided by I
17、HSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-70438A(AR) 43.2.4 Ternary eutectic alloy. The materials, components and assemblies shall be in accordance with dwg. 9215391. 3.2.5 Adhesive. The materials, components and assemblies shall be in accordance wi
18、th dwg. 9215393. 3.3 Ammunition lot numbering. Ammunition lot numbers shall be assigned in accordance with MIL-STD-1168. 3.4 Tension. The plug shall sustain a load of 8000 pounds minimum without any sign of failure. 3.5 Ductility. The Plug shall withstand permanent deformation of the eye without cra
19、cking. 3.6 Fracture. The plug shall be free from porosity and shrinks or discontinuous structure. 3.7 Workmanship. All parts shall be fabricated and finished in a thorough, workmanlike manner. They shall be clean and free of burrs, sharp edges, unblended radii, cracks, surface defects, chips, dirt,
20、grease, dust and other foreign matter. Where cleaning and preparation are required by component details, the finish specified shall apply to the indicated surfaces regardless of contour configuration. The cleaning method used shall not be injurious to any part nor shall the parts be contaminated by
21、the cleaning agent. All paint shall be dry to the touch before packing for shipment. The paint shall be considered dry when the soft tacky condition no longer exists and the paint feels firm when touched with a finger using moderate pressure. Provided by IHSNot for ResaleNo reproduction or networkin
22、g permitted without license from IHS-,-,-MIL-DTL-70438A(AR) 54. VERIFICATION TABLE I. Requirement/Verification Cross Reference Matrix. Methods of Verification Classes of Verification N/A Not Applicable 1 Analysis 2 Demonstration 3 Examination 4 - Test A- First Article B- Acceptance Section 3 Require
23、ments Description Verification Method Verification Class Section 4 Verification N/A 1 2 3 4 A B 3.1.1 First article X X X X 4.2 3.1.2 Conformance X X X X 4.3 3.2 Components and assemblies X X X X 4.3 3.2.1 Plug, Universal X X X X 4.3.2.1 3.2.2 Universal plug assembly (prior to pouring alloy) X X X X
24、 4.3.2.2 3.2.3 Universal plug assembly (after pouring alloy) X X X X 4.3.2.3/4.4.2/4.4.5 3.2.4 Ternary eutectic alloy X X X X 4.3.2.4/4.4.1 3.2.5 Adhesive X X X X 4.3.2.5/4.4.4 3.3 Ammunition lot numbering X X X 4.3.1 3.4 Tension X X X 4.3.2.1/ 4.4.3.1 3.5 Ductility X X X 4.3.2.1/ 4.4.3.2 3.6 Fractu
25、re X X X 4.3.2.1/ 4.4.3.3 3.7 Workmanship X X X 4.3.2.1/ 4.3.2.3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-70438A(AR) 64.1 Classification of verification. The verification requirements specified herein are classified as follows: a. Firs
26、t article inspection (see 4.2). b. Conformance inspection (see 4.3). 4.2 First article inspection. 4.2.1 First article quantity. First article verification shall be performed on the quantity of items as indicated in table II. 4.2.1.1 Multiple cavity molds. When a multiple cavity mold is to be used i
27、n production, the sample shall include at least three plugs from each cavity in the mold. The plug shall exhibit permanent cavity identification. 4.2.2 Inspections to be performed. The first article verification shall be performed in accordance with Table II. 4.2.3 First article rejection. If any it
28、em fails to comply with requirements, the first article sample shall be rejected. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-70438A(AR) 7TABLE II. FIRST ARTICLE INSPECTION EXAMINATION OR TEST NUMBER OF SAMPLES REQUIREMENT PARAGRAPH INSPE
29、CTION METHOD REFERENCE Universal Plug Dwg. 9347368 Examination for defects Note 1 3.2.1 4.3.2.1 Universal plug assembly (prior to pouring alloy) Dwg. 9347368 Examination for defects 25 3.2.2 4.3.2.2 Universal lifting plug assembly (after pouring alloy) Dwg. 9345325 Examination for defects 50 3.2.3 4
30、.3.2.3 Salt spray test 2 3.2.3 4.4.2 Ternary eutectic alloy Dwg. 9215391 Melting test 1 pound 3.2.4 4.4.1 AdhesiveDwg. 9215393 Examination for defects 10 3.2.5 4.4.4 1. 25 minimum; at least 3 per cavity from multiple cavity molds. Provided by IHSNot for ResaleNo reproduction or networking permitted
31、without license from IHS-,-,-MIL-DTL-70438A(AR) 84.3 Conformance inspection. 4.3.1 Lot formation. Lot formation shall be in accordance with lot formation requirement of MIL-STD-1916 (Formation and identification of lots or batches). In addition each inspection lot shall contain ternary eutectic allo
32、y from one lot number and plugs of one lot interfix number from one manufacturer. 4.3.2 Classification of characteristics. a. Sampling requirements. Inspection sampling requirements for critical, major and minor characteristics are defined in MIL-STD-1916. Unless specified otherwise, Inspection Leve
33、l IV shall be used for all characteristics defined as Majors and Inspection Level II for all Minor characteristics; Critical characteristics shall be addressed in accordance with MIL-STD-1916. b. Conformance inspection. Conformance inspection shall be performed in accordance with paragraph 4.3.2.1 a
34、nd 4.3.2.2. For all conformance inspections the same sample specimen may be used for all non-destructive examinations or tests unless otherwise specified. c. Alternative Inspections. Alternative conformance inspections may be submitted and approved in accordance with MIL-STD-1916. d. Tool control. D
35、imensions marked tool control shall be gaged at the beginning of production and whenever tooling is replaced. Where destruction of components is necessary to inspect these dimensions, measurements of the tool may be substituted provided there is an established correlation between the tool dimensions
36、 and the component dimensions prior to the start of production. There shall be adequate surveillance to assure that the drawing requirements are being met throughout the life of the tool. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-70438A
37、(AR) 9Conformance Inspection by classification of characteristics DRAWING NUMBER 9347368 PARAGRAPH 4.3.2.1 TITLE Plug, Universal SHEET 1 OF 2 NEXT HIGHER ASSEMBLY 9345325 CLASSIFICATION EXAMINATION OR TEST CONFORMANCE CRITERIA REQUIREMENT PARAGRAPH INSPECTION METHOD REFERENCE Critical None defined M
38、ajor 101 Width of eye section, min. Level IV 3.2.1 AIE 102 Length of thread section Level IV 3.2.1 AIE 103 Dimension from bottom thread section to bottom of flange Level IV 3.2.1 AIE 104 Outside diameter of shank Level IV 3.2.1 AIE 105 Flange thickness Level IV 3.2.1 AIE 106 Diameter of flange Level
39、 IV 3.2.1 AIE 107 Diameter of gasket groove Level IV 3.2.1 AIE 108 Depth of gasket groove, max. Level IV 3.2.1 AIE 109 True position of gasket groove Level IV 3.2.1 AIE 110 Perpendicularity of flange Level IV 3.2.1 AIE 111 Thread pitch diameter, min. Level IV 3.2.1 AIE 112 Thread major diameter, min
40、. Level IV 3.2.1 AIE 113 Tension test (see note 1) 5 minimum 3.4 4.4.3.1 114 Ductility test (see note 2) 5 minimum 3.5 4.4.3.2 115 Fracture test (see note 1) 5 minimum 3.6 4.4.3.3 116 Radius at base of shank, max. Level IV 3.2.1 AIE 1. At least one per cavity. 2. Same samples as Major 113. Provided
41、by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-70438A(AR) 10Conformance Inspection by classification of characteristics DRAWING NUMBER 9347368 PARAGRAPH 4.3.2.1 TITLE Plug, Universal SHEET 2 OF 2 NEXT HIGHER ASSEMBLY 9345325 CLASSIFICATION EXAMINATIO
42、N OR TEST CONFORMANCE CRITERIA REQUIREMENT PARAGRAPH INSPECTION METHOD REFERENCE 117 Inside diameter Level IV 3.2.1 AIE 118 True position of shank Level IV 3.2.1 AIE 119 True position of thread diameter Level IV 3.2.1 AIE Minor 201 Thread pitch diameter, max. Level II 3.2.1 AIE 202 Width of gasket g
43、roove Level II 3.2.1 AIE 203 True position of flange Level II 3.2.1 AIE 204 Radius at top of shank, min. Level II 3.2.1 AIE 205 Height of eye hole Level II 3.2.1 AIE 206 Width of eye hole Level II 3.2.1 AIE 207 Angle of groove inside diameter Level II 3.2.1 AIE 208 Outside radius of eye, min Level I
44、I 3.2.1 AIE 209 Cavity identification missing Level II 3.2.1 Visual 210 Radii or chamfers missing or incorrect Level II 3.2.1 Visual 211 Surface finish incorrect Level II 3.2.1 Visual 212 Evidence of poor workmanship Level II 3.7 Visual Provided by IHSNot for ResaleNo reproduction or networking perm
45、itted without license from IHS-,-,-MIL-DTL-70438A(AR) 11Conformance Inspection by classification of characteristics DRAWING NUMBER 9345325 PARAGRAPH 4.3.2.2 TITLE Universal plug assembly (prior to pouring alloy) SHEET 1 OF 1 NEXT HIGHER ASSEMBLY CLASSIFICATION EXAMINATION OR TEST CONFORMANCE CRITERI
46、A REQUIREMENT PARAGRAPH INSPECTION METHOD REFERENCE Critical None defined Major 101 Primer or sealing compound not present or noted on surface Level IV 3.2.2 Visual Minor None defined Conformance Inspection by classification of characteristics Provided by IHSNot for ResaleNo reproduction or networki
47、ng permitted without license from IHS-,-,-MIL-DTL-70438A(AR) 12DRAWING NUMBER 9345325 PARAGRAPH 4.3.2.3 TITLE Universal lifting plug assembly (after pouring alloy) SHEET 1 OF 1 NEXT HIGHER ASSEMBLY CLASSIFICATION EXAMINATION OR TEST CONFORMANCE CRITERIA REQUIREMENT PARAGRAPH INSPECTION METHOD REFERE
48、NCE Critical None defined Major 101 Salt spray Note 1 3.2.3 4.4.5 102 Air pressure test 100% 3.2.3 4.4.2 103 Alloy excessively below or excessively above noted surface Level IV 3.2.3 AIE Minor 201 Paint missing, incomplete or on undersurface Level II 3.2.3 Visual 202 Anti-seize compound missing or incomplete Level II 3.2.3 Visual 203 Evidence of poor workmanship Level II 3.7 Visual 1. Sampling plan as specified in TT-C-490. Provided by IHSNot for ResaleNo reproduction or networking permitted without license fr
