1、MIL-C-24356A( SR) 21 April 1982 SUPERSEDING 12 February 1971 . MIL-C-24356( SHIPS) a (See 6.6 and 6.7) Military specification code number A Size code number (see 1.2.1.1) Coupling or split clamp identification code I MILITARY SPECIFICATION COUPLINGS, SEGMENTED, AND SPLIT CLAMPS REATTACHABLE, 2-1/2-,
2、 4-, 6- AWD 7-INCH, FOR REFUELINDAT-SEA HOSE This specification is approved for use by the Naval Sea Systems Command, Department of the Navy, and is available for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This Specification covers 2-1/2-, 4-, 6- and 7-inch
3、 segmented, reattachable couplings and split clamps intended for use on 2-1/2-, 4-,.6- and 7-inch hose meeting the requirements of MIL-H-22240, and primarily intended for use in, but not limited to, refueling-at-sea. 1.2 C.lassification. 1.2.1 Coupling and split clamp designation. Couplings and spli
4、t clamps covered by this specification shall be designated in the following form (see 6.2.1 and 6.3). a M24356 - XX-XX I II 1.2.1.1 Size. The size (inside diameter of hose to be used) of the couplings or split clamps is identified by two digits (see table I). TABLE I. Code number to size. I Code num
5、ber I Size (inside diameter) 25 40 60 70 2 1/2-inch 4 inch 6 inch 7 inch Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commander, Naval Sea Systems Command, SEA 3242, Department of the Navy, W
6、ashington, DC 20362 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. 7 f THIS DOCUMENT CONTAINS /g PAGES. A Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MI
7、L-C-2435bA Li? m 99939Ob O274807 b sc FC MC MIL-C-24 3 5 6A( SH) Split clamp Female coupling Male coupling 1.2.1.2 Coupling of split clamp identification. The type of fitting (female coupling of figure 1, male coupling of figure 1 or split clamp of figure 3) is identified by two letters (see table I
8、I). TABLE If. Code letters to fitting type. I Code letters I Fitting type I 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications and standards. Unless otherwise specified, the followng specifications and standards of the issue listed in that issue of - the Department of Defense Ind
9、ex of Specifications and Standards (DoDISS) epecified in the solicitation form a part of thia specification to the extent rrpecified herein. SPECIFICATIONS MILITARY MIL-FI-775 - MIL-A-8625 - MIL-I-22240 - Hose, Rubber, Plastic, Fabric, or Metal (Including a Tubing) ; and Fittings, Nozzles and Strain
10、ers, Packaging of. Services, Discharge Only, Smooth Bore, Light%eight Buoyant Type . - Anodic Coatings, for Aiuminum and Aluminum Alloys. Hose, Rubber, Petroleum Based Fuels and Water STANDARDS FEDERAL FED-STD-151 - Metals; Test Methods. MILITARY MS20995 - Wire, Safety, or Lock. MS28775 - Packing, P
11、reformed, Hydraulic, Plus 27SF, (“O* Ring). (Copies of specifications and standards required by contractors in connec- tion with specific acquisition functions should be obtained from the contracting activity or as directed by the contracting officer.) .- -. 2 Provided by IHSNot for ResaleNo reprodu
12、ction or networking permitted without license from IHS-,-,-MIL-C-24 356A( SH) 2.2 Other publications. The following documents form a part of this specification to the extent specified herein. The issues of the documents which are indicated as DoD adopted shall be the issue listed in the current DoDI
13、SS and the supplement thereto, if applicable. AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) A 167 - Stainiess and Heat-Resisting Chromium-Nickel Steel Plate, Sheet, and Strip, Spec. for. (DoD adopted) A 276 - Stainless and Heat-Resisting Steel Bars and Shapes, Spec. for. B 26 - Aluminum-Alloy Sa
14、nd Castings, Spec. for. (DoD adopted) B 221 - Aluminum-Alloy Extruded Bar, Rod, Wire, Shape, and B 247 - Aluminum-Alloy Die and Hand Forgings, Spec for. D 2000 - Rubber Products in Automotive Applications, Tube, Spec. for. (DoD adopted) Classification for. (DoD adopted) (Application for copies shoul
15、d be addressed to the American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103.) UNIFORM CLASSIFICATION COMMITTEE AGENT Uniform Freight Classification Ratings, Rules and Regulations. (Application for copies should be addressed to the UniEorm Classification Conmiittee Agen
16、t, Tariff Publication Officer , Room 1106, 222 South Riverside Plaza, Chicago , IL 60606.) (Industry association specifications and standards are generally available They are also distributed among technical groups for reference from libraries. and using Federal agencies.) 2.3 Order of precedence. I
17、n the event of a conflict between the text of this specification and the references cited herein, the text of this specifi- cation shall take precedence. 3 REQUIREMENTS 3.1 Qualification. The reattachable end couplings furnished under this specification shall be products which are qualified for list
18、ing on the applicable qualified products list at the time set for opening of bids (see 4.3 and 6.4). 3.2 Material. 3.2.1 Recovered materials. Unless otherwise specified herein, all equip- ment, material, and articles incorporated in the products covered by this specification shall be new and shall b
19、e fabricated using materials produced from recovered materials to the maximum extent practicable without jeopardizing the intended use. been collected or recovered from solid waste and reprocessed to become a source of raw materials, as opposed to virgin raw materials. None of the above shall be int
20、erpreted to mean that the use of used or rebuilt products is allowed under this specification unless otherwise specifically specified. The term “recovered materials“ means materials which have 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-2
21、435bA 47 M 499990b 0274809 T Coupling (inches) 2-1/2 4 6 7 size “O“ ring dash size 234 346 438 442 J MIL-C-24356A( SH) 3.2.2 Couplings. The materials for all couplings and split clamps shall be as shown in table III. TABLE III. Material composition, Applicable document Figure number Materiafi/ Remar
22、ks Name of part End coupling nipple; male or f emale 1 Cast or wrought aluminum alloy ASTM B 26, Alloy 356-T6 or B 221, 606 1-T6 Anodized , MIL-A-8625 type I Split clamp half 2 Aluminum wrought or extruded ASTM B 221, 6061-T6 or B 247, 6061-T6 Anodized , MIL-A-8625 type 1 Band for split clamp 3 Corr
23、osion- resisting steel ASTM A 167, GRo 11 Screws and nuts Corrosion- resisting steel ASTM A 276, type 316 End coupling body Wrought aluminum alloy ASTM B 221, 6061-T6 or B 247, 606146 Anodized , MIL-A-8625 type I “O“ ring Synthetic rubber ASTM D 2000 L i/ Materials differing from those specified, bu
24、t of similar types having equal or superior physical and chemical properties, will be considered where more appropriate for the coupling design and if satisfactory to the contracting activity . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-2q
25、35bA 47 77977Ob 0274830 b W - MIL-C-2435 6A( SH) 3.3 End couplings. 3.3.1 The dimensions of the male and female couplings shall be in accor- dance with figure 1. be in accordance with figures 2 and 3. fitted with an “O“ ring seal in the groove. those shown on figures 2 and 3 are acceptable subject t
26、o approval of the Naval Sea Systems Command (NAVSEA). However, the proposed split clamp design shall be interchangeable with any couplings which can be obtained under this specification. assembly or disassembly. The dimensions of the split clamp and band assembly shall The female clamp coupling shal
27、l be Split clamp designs other than The split clamp must not have parts which can be lost during 3.3.2 The end couplings shall be of the segmented reattachable type sekurely gripping the hose and maintaining such grip without significant relaxation. The coupling shall be readily removable and reatta
28、chable to a new section of hose by the use of .commonly available hand tools or tools which are normally carried onboard ship. ing activity at the time that approval is requested. The hose couplings shall meet all the applicable performance requirements specified when attached to hose constructed in
29、 accordance with MIL-H-22240, without developing any weakness and without causing damage to the hose. tion of the hose in the coupling is tolerable, provided no damage or incipient failure is created thereby.) The gripping action shall involve the reinforce- ment without the deformation causing any
30、damage to any part of the hose; reliance shall not be placed upon gripping of the tube and cover alone. The internal nipple and external members in contact with the hose shall have the largest possible radii at their ends, to prevent damage to the hose as a result of severe flexing or collapsing of
31、the hose. hose shall be not more than 1/2 inch back from the end of the external clamping member. The coupling exterior shall be free of projections which can snag on ships structure or become damaged through rough handling. All components of the coupling shall be designed to withstand rough handlin
32、g, including dropping, without deformation. The latter should be verified with the contract- (In this connection, reasonable deforma- The end of the nipple inside the 3.3.2.1 The 2-1/2 and 4-inch end couplings may be a solid socket design. 3.3.3 The coupling should incorporate means to obtain grippi
33、ng of the hose to its predetermined optimum amount only and to insure that this condition can be obtained repeatedly by any operator, without exercising special skill or judgment. properly made up. coupling make-up. will not tend to decrease with a pull on the hose. It shall be readily evident to th
34、e operator that the coupling is Conversely, means shall be incorporated to prevent improper The coupling design shall be such that the grip on the hose 3.4 Tensile pull. Couplings, when attached to hose meeting the require- ments of MIL-H-22240, shall Withstand the tensile pull test specified in 4.7
35、.1 without any apparent damage to the hose or weakness of the coupling grip. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-2435bA 47 999990b 0274Bllr B i e 3,s High pressure hold. Couplings, when attached to hose meeting the requirements of
36、 MIL-H-22240, shall withstand the high pressure hold test speci- fied in 4,7,2. 3.6 1_L Proof. 3,7 Marking, Hose couplings shall pass the proof tests specified in 4,7,3, 3*7,1 Stamping, Each nipple and segment shall be stamped at a place so as not to weaken the coupling, limited to the following: St
37、amping shall include, but not necessarily be (a) Manufacturers name or trademark, (b) Size, in inches, (c) Specification number (MIL-C-24356). 3.8 Drawings. Drawings shall be furnished in accordance with the data ordering document included in the contract or purchase order (see 6.2.2), When applying
38、 for qualification testing for reattachable end couplings, the contractor shall submit to NAVSEA and the Defense Contract Administration Services Management Area (DCASMA), one set of detailed drawings containing all information, including dimensions, tolerances, finishes, and materials thereon. Upon
39、 qualification approval, the drawings shall be validated by DCASMA and two microfilm copies of the validated drawings shall be sent to NAVSEA. 3.9 Workmanship, Workmanship shall be such that there are no sharp or e rough edges that could damage the hose or injure personnel. free of dirt, metal shavi
40、ngs, or other contamination. All parts shall be 4, QUALITY ASSURANCE PROVISIONS 4,l Responsibility for inspection, Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of all, inspection requirements as specified herein. fied in the contract
41、 or purchase order, the contractor may use his own or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government, reserves the right to perform any of the inspections set forth in the speci- fication where such inspections
42、are deemed necessary to assure supplies and services conform to prescribed requirements. Except as otherwise speci- The Government 4,2 Classification of inspections. The inspection requirements specified herein are classified as follows: (a) Qualification inspection (see 4,3). (b) Quality conformanc
43、e inspection (see 4.5). 4,3 Qualification tests, Qualification tests ahall be conducted on reattachable end couplings at a laboratory satisfactory to NAVSEA, tesis shall consist of the tests specified in table IV. Qualification Provided by IHSNot for ResaleNo reproduction or networking permitted wit
44、hout license from IHS-,-,-MIL-C-2435bA 47 997970b 0274832 T = Sample Sample No. 2 No. 3 4.3.1 Samples for qualification. Sample No. 4 4.3.1.1 Reattachable end couplings. Four sets of reattachable end coup- lings of each size shall be subjected to the examination and tests specified in 4.6 and table
45、IV. mating test plug secured with a split clamp assembly. the mating test plugs should not exceed the outside diameter of the coupling bodies. specified in table IV. Each reattachable end coupling shall be supplied with a The outside diameter of The test plugs shall remain in the couplings during th
46、e drop test 1 2 3 TABLE IV. Outline of qualification testing of reattachable end couplings (for each sample, tests shall be conducted in the numerical order represented by the numbers in the blocks). Make up hose assembly and verify High pressure hold test (see 4.7.2) 3 ease of make up 195 Proot tes
47、t (see 4.7.3.1) 2, 6 Test number Sample Length of hose between number couplings (minimum) (feet) 1, 2 2 2 3 2 4 2 Tests Wall thickness (inch) (minimum) (see 4.3.1.2 and notes 1 and 2) 0.454 min -410 max .454 min .410 max I: Sample I I 4 I Tensile pull test (see 4.7.1) - 5 I Drop hose assembly 5 time
48、s onto a I 6 steel or set concrete floor from a height of 10 feet, such that both end couplings hit at approximately the same time ease of disassembly, see that the hose is not damaged and cut 6 inches off each end of hose and reconduct test number 1. Disassemble the sample and verify 4 - 11 Elapsed
49、 time from completion of test no. 6 to rerun of test no. 1 on shortened sample shall be no more than 1 hour. 4.3.1.2 Hose. Hose samples required for qualification testing of reattach- able end couplings shall be in accordance with MIL-H-22240. shall be as specified in table V. ground, if necessary, to obtain the desired wall thickness. Wall thicknesses Only the cover of the hose samples shall be- 7 Provided by IHSNot for ResaleNo reproduction or networking pe
