1、AMSC N/A FSC 5985 INCH-POUND MIL-DTL-24044C 1 February 2013 SUPERSEDING MIL-DTL-24044B 18 January 2005 DETAIL SPECIFICATION FLANGES, COAXIAL LINE, RIGID, AIR DIELECTRIC, GENERAL SPECIFICATION FOR This specification is approved for use by all Departments and Agencies of the Department of Defense. 1.
2、SCOPE 1.1 Scope. This specification covers the general requirements for flanges that are used with 50 and 75 ohm, rigid, air dielectric, coaxial transmission lines and parts. 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3 and 4 of this specifica
3、tion. 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 ensure the completeness of this list, document users are cautioned that they must meet all specified requirements
4、of 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 extent specified herein. Unless otherwis
5、e specified, the issues of these documents are those cited in the solicitation or contract. FEDERAL STANDARDS FED-STD-H28 - Screw-Thread Standards for Federal Services. COMMERCIAL ITEM DESCRIPTIONS A-A-59588 - Rubber, Silicone. DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-DTL-14072 - Finishes for Ground
6、 Based Electronic Equipment. MIL-DTL-24044/1 - Flange, Fixed, Coaxial Line, Rigid. DEPARTMENT OF DEFENSE STANDARDS MIL-STD-130 - Identification Marking of U.S. Military Property. MIL-STD-889 - Dissimilar Metals. (Copies are available online at https:/assist.dla.mil or at https:/assist.dla.mil/quicks
7、earch/ or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.) Comments, suggestions or questions on this document should be addressed to DLA Land and Maritime, ATTN: VAT, Post Office Box 3990, Columbus, OH 43218-3990, or emailed to Tubesampsdl
8、a.mil. Since contact information can change, you may want to verify the currency of this address information using the ASSIST Online database at https:/assist.dla.mil. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24044C 2 2.3 Non-Governmen
9、t publications. The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. AMERICAN SOCIETY OF MECHANICAL ENGINEERS (ASME) INTERNATIONAL ASME-B46.1 - Surface Texture (
10、Surface Roughness, Waviness, and Lay). (Copies are available online at http:/www.asme.org/ or at ASME INTERNATIONAL, Three Park Avenue, New York, NY 10016-5990.) AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) INTERNATIONAL ASTM-A269 - Tubing for General Service, Seamless and Welded Austenitic Sta
11、inless Steel. ASTM-B16/B16M - Rod, Brass, Free-Cutting, Bar and Shapes for use in Screw Machines. ASTM-B21/B21M - Rod, Bar, and Shapes, Naval Brass. ASTM-B26/B26M - Aluminum-Alloy Sand Castings. ASTM-B85/B85M - Aluminum-Alloy Die Castings. ASTM-B103/B103M - Plate, Phosphor Bronze, Sheet, Strip, and
12、Rolled Bar. ASTM-B108/B108M - Aluminum-Alloy Permanent Mold Castings, Standard Specification for. ASTM-B124/B124M - Copper and Copper Alloy Forging Rod, Bar, and Shapes. ASTM-B140/B140M - Copper-Zinc-Lead (Red Brass or Hardware Bronze) Rod, Bars, and Shapes. ASTM-B211 - Aluminum and Aluminum-Alloy B
13、ar, Rod, and Wire. ASTM-B584 - Castings, Copper Alloy Sand, for General Applications. ASTM-B700 - Electrodeposited Coatings of Silver for Engineering Use. ASTM-D4894 - Polytetrafluoroethylene (PTFE) Granular Molding and Ram Extrusion Materials, Standard Specification for. ASTM-D4895 - Polytetrafluor
14、oethylene (PTFE) Resins Produced from Dispersion. (Copies are available online at http:/www.astm.org/ or at ASTM INTERNATIONAL, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959.) 2.4 Order of precedence. Unless otherwise noted herein or in the contract, in the event of a confli
15、ct between the text of this document and the references cited herein (except for related specification sheets), the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1
16、 Specification sheets. The individual item requirements shall be as specified herein and in accordance with the applicable specification sheets. In the event of any conflict between the requirements of this specification and the specification sheet, the latter shall govern. 3.2 Material. The materia
17、l shall be as specified herein (see 3.1). 3.2.1 Copper-base alloys. 3.2.1.1 Bar stock. When fabricated from bar stock, flanges shall be made of leaded red brass, leaded brass, or naval brass. 3.2.1.1.1 Leaded red brass. Leaded brass shall be half-hard, in accordance with ASTM-B140/B140M. 3.2.1.1.2 L
18、eaded brass. Leaded brass shall be half-hard in accordance with ASTM-B16. 3.2.1.1.3 Naval brass. Naval brass shall be alloy A or alloy C, half-hard, in accordance with ASTM-B21. 3.2.1.2 Casting. When fabricated by casting, flanges shall be made of leaded tin bronze conforming to alloy 2A or 1B, cond
19、ition as cast, in accordance with ASTM-B584. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24044C 3 3.2.1.3 Forging. When fabricated by forging, flanges shall be made of leaded brass conforming to alloy 2 of Publication ASTM-B124, or naval
20、brass conforming to alloy A, half-hard, of ASTM-B21. 3.2.2 Aluminum-base alloys. 3.2.2.1 Bar stock and forging. When fabricated from bar stock or by forging, flanges shall be made of aluminum alloy 6061, temper T6, in accordance with ASTM-B211. 3.2.2.2 Sand casting. When fabricated by sand casting,
21、flanges shall be made of aluminum alloy C4A, condition T4; alloy CS43A, condition F; alloy ZG61A, condition T5, or alloy ZG61B, condition T5 in accordance with ASTM- B26/B26M. 3.2.2.3 Die casting. When fabricated by die casting, flanges shall be made of aluminum alloy G8A or alloy SG100A in accordan
22、ce with ASTM-B85/B85M. 3.2.2.4 Permanent mold casting. When fabricated by permanent mold casting, flanges shall be made of aluminum alloy SG70A, condition T6, or alloy ZC60A, condition T5 in accordance with ASTM-B108/B108M. 3.2.2.5 Finish. When fabricated of aluminum alloy, flanges shall have the fi
23、nish E-513 specified in MIL-DTL-14072. 3.2.3 Gaskets. “O” ring gaskets supplied with flanges shall be made of silicone rubber conforming to class 2B, grade 50, of Commercial Item Description A-A-59588 (see 3.1). 3.2.4 Inner connector. The inner connector used with the flanges shall be made of phosph
24、or bronze or free-cutting brass in accordance with ASTM Designation B-103 or B-16, as applicable, silver plated in accordance with ASTM-B700. Contact surfaces shall have a 32-microinch finish, or better, before plating (see 3.1). 3.2.5 Insulator. The inner connector insulator shall be made of polyte
25、trafluoroethylene conforming to ASTM-D4894 and ASTM-D4895 (see 3.1). 3.2.6 Locating pin. The locating pin shall be made of corrosion-resisting (stainless) steel, type 303 of ASTM-A269 (see 3.1). 3.2.7 Bolts. The bolts, nuts, and lock washers supplied with flanges shall be made of corrosion-resisting
26、 (stainless) steel, type 303 or 316 in accordance with ASTM-A269 (see 3.1). 3.2.8 Dissimilar metals. Unless suitability protected against the electrolytic corrosion, dissimilar metals shall not be used in contact with each other (see 6.5.1). 3.2.9 Pure tin. The use of pure tin, as an underplate or f
27、inal finish, is prohibited both internally and externally. Tin content of flange components and solder shall not exceed 97 percent, by mass. Tin shall be alloyed with a minimum of 3 percent lead, by mass (see 6.7). 3.3 Interface and construction. Flanges shall be of the interface, construction and p
28、hysical dimensions specified (see 3.1). 3.3.1 Condition. When specified (see 6.2), flanges shall be annealed before finish machining. 3.3.2 Threaded parts. All threaded parts shall be in accordance with FED-STD-H28. 3.4 Surface roughness. When surface roughness is determined as specified in 4.6.4, a
29、ll finished mating and inner surfaces of the flanges shall be 63 root mean square microinches or better. 3.5 Voltage standing wave ratio (VSWR). When tested as specified in 4.6.2 or 4.6.2.1 the indicated VSWR of the insulator bullet assembly and the flanges shall not exceed 1.03:1. Provided by IHSNo
30、t for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24044C 4 3.6 Insertion force. When measured as specified in 4.6.3, the insertion force of the inner connector into the inner conductor of the line shall be as specified. Line size Force (pounds) 7/8 1-5/8 3-1/8
31、6-1/8 7 to 18 10 to 20 10 to 20 25 to 40 3.7 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or environmentally preferable materials should be used to the maximum extent possible provided that the material meets or exceeds the operational and maintenance requiremen
32、ts, and promotes economically advantageous life cycle costs. All components supplied shall be new and unused. 3.8 High potential. The flanges and insulator bullet assemblies shall show no evidence of voltage breakdown when tested as specified in 4.6.5. 3.9 Marking. Flanges shall be marked in accorda
33、nce with MIL-STD-130, with the part number and the manufacturers code symbol. Marking shall be in depressed or raised characters approximately .094-inch high, in the location specified (see 3.1). 3.10 Workmanship. Flanges shall be processed in such a manner as to be uniform in quality, and all surfa
34、ces shall be free of burrs, die marks, chatter marks, scratches, dirt, grease, scale, splinters and other defects that will affect life, serviceability, or appearance. 4. VERIFICATION 4.1 Test equipment and inspection facilities. The test equipment and inspection facilities shall be of sufficient ac
35、curacy, quality, and quantity to permit performance of the required inspection. The supplier shall establish calibration of inspection equipment to the satisfaction of the Government. 4.2 Classification of inspection. The examination and testing of flanges shall be classified as follows: a. Material
36、s inspection (see 4.3). b. Conformance inspection (see 4.5). (1) Inspection of product for delivery (see 4.5.1). 4.3 Materials inspection. Materials inspection shall consist of verification that the materials listed in table I, used in fabricating the flanges, are in accordance with the applicable r
37、eferenced specifications or requirements prior to such fabrication. Except for Navy acquisitions, a certificate of analysis furnished by the supplier may constitute verification. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24044C 5 TABLE
38、I. Material Inspection. Material Requirement paragraph Applicable specification or publication Copper-base alloys: Bar stock: Leaded red brass Leaded brass Naval brass Castings (leaded tin bronze) Forging: Leaded brass Naval brass Aluminum-base alloys: Bar stock and forging Sand casting Die casting
39、Permanent mold casting Silicon rubber Phosphor bronze Corrosion-resisting (stainless) steel Polytetrafluoroethylene 3.2.1 3.2.1.1 3.2.1.1.1 3.2.1.1.2 3.2.1.1.3 3.2.1.2 3.2.1.3 3.2.1.3 3.2.2 3.2.2.1 3.2.2.2 3.2.2.3 3.2.2.4 3.2.3 3.2.4 3.2.6 and 3.2.7 3.2.5 - - ASTM-B140/B140M ASTM-B16/B16M ASTM-B21/B
40、21M ASTM-B584 ASTM-B124/B124M ASTM-B21/B21M - ASTM-B211 ASTM-B26/B26M ASTM-B85/B85M ASTM-B108/B108M A-A-59588 ASTM-B103/B103M ASTM-A269 ASTM-D4894, ASTM-D4895 4.4 Inspection conditions. Unless otherwise specified herein, all inspection shall be made at room ambient temperature, relative humidity, an
41、d pressure. 4.5. Conformance inspection. 4.5.1 Inspection of product for delivery. Inspection of product for delivery shall consist of groups A, B, and C. 4.5.1.1 Inspection lot. An inspection lot, as far as practicable, shall consist of all the flanges of the same PIN, produced under essentially th
42、e same conditions, and offered for delivery at one time. 4.5.1.2 Rejected lots. If an inspection lot is rejected, the supplier may withdraw the lot, rework it to correct the defects, or screen out the defective units, as applicable, and reinspect. Such lots shall be separate from new lots and shall
43、be clearly identified as reinspected lots. 4.5.1.3 Group A inspection. Group A inspection shall consist of the examinations or tests specified in table II and shall be made on the same set of samples. TABLE II. Group A Inspection. Examination or test Requirement paragraph Method paragraph Visual and
44、 mechanical Interface and construction Workmanship Marking Surface roughness 3.1, 3.3 3.3.1 and 3.3.2 3.10 3.9 3.4 4.6.1 - - - 4.6.4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-24044C 6 4.5.1.3.1 Sampling plan. This specification utilizes
45、 an accept on zero defect (c = 0) sampling plan. Statistical sampling and inspection shall be performed on an inspection lot basis with a random sample of flanges selected in accordance with table III. No failures shall be permitted. TABLE III. Group A sampling plan. Lot size Sample size 1 - 13 14-1
46、50 151-280 281-500 501-1200 1201-3200 3201-10,000 10,001-35,000 35,001-150,000 150,001-500,000 500,001 and over 100 percent 13 20 29 34 42 50 60 74 90 102 4.5.1.3.2 Disposition of sample units. Sample units which have passed the group A inspection may be delivered on the contract or order if the lot
47、 is acceptable. 4.5.1.4 Group B inspection. Group B inspection shall consist of the test specified in table IV. 4.5.1.4.1 Sampling plan. The sampling plan shall be in accordance with table III for sample inspection. Unless otherwise specified herein, inspection shall be used. Acceptance shall be bas
48、ed upon the zero defect sampling plan in table III. 4.5.1.4.2 Disposition of sample units. Sample units which have passed the group B inspection may be delivered on the contract or order if the lot is acceptable. TABLE IV. Group B Inspection. Examination Requirement Method or test paragraph paragrap
49、h Insertion force 3.6 4.6.3 4.5.1.5 Group C inspection. Group C inspection shall consist of the tests specified in table V. 4.5.1.5.1 Sampling plan. Four sample units of each type on order shall be selected from the first quantities produced. Thereafter, four samples of each type from every 500 or fraction thereof produced, or four samples of each type from each months production, whichever occurs first. 4.5.1.5.2 Disposi
