1、Comments, suggestions, or questions on this document should be addressed to U.S. Army Tank-automotive and Armaments Command, ATTN: RDTA-EN/STND/TRANS, MS# 268, 6501 E. 11 Mile Road, Warren, MI 48397-5000 or emailed to DAMI_STANDARDIZATIONconus.army.mil. Since contact information can change, you may
2、want to verify the currency of this address information using the ASSIST Online database at http:/assist.daps.dla.mil. AMSC N/A FSC 4720 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. INCH-POUND A-A-52435A 3 August 2009 SUPERSEDING A-A-52435 2 April 1993 COMMERCIAL
3、 ITEM DESCRIPTION HOSE ASSEMBLIES, METAL: FLEXIBLE, FUEL AND OIL The General Services Administration has authorized the use of this commercial item description (CID) as a replacement for MIL-H-13524B(AT), which is cancelled. 1. SCOPE. This CID covers two types of flexible hose assemblies for the con
4、veyance of gasoline or oil or for other applications when installed in military vehicles or other U.S. Army equipment with the exception of use with aircraft engine fluid lines. 1.1 Classification. Hose assemblies shall be of the following types as specified (see 5.2): Type I - Corrosion resistant s
5、teel Type II - Bronze or brass 2. SALIENT CHARACTERISTICS 2.1 Materials. Materials used in the hose assemblies shall be as specified herein and in applicable drawings (see 5.2). The use of recovered materials made in compliance with regulatory requirements is acceptable providing all requirements of
6、 this CID are met (see 5.5). 2.2 Design and construction. Hose shall consist of corrugated or convoluted tubing of seamless, welded, or brazed design, protected with a cover of one or more beamed wire braids. Each length of hose shall be fitted with a set of couplings, as specified in applicable dra
7、wings (see 5.2), each permanently attached to hose. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-52435A 2 2.3 Dimensions. Hose assemblies shall be of the dimensions specified in procurement documents and in applicable drawings (see 5.2). 2.4 H
8、ose assembly interchangeability. Unless otherwise specified, hose assemblies for each particular size (inside diameter) shall be interchangeable with all other like hose assemblies intended for the same use. 2.5 Performance. 2.5.1 Flexibility and leakage. Hose assemblies shall be capable of being be
9、nt around a mandrel under an internal hydrostatic pressure in accordance with table I while at 300 degrees Fahrenheit (F) 149 degrees Celsius (C). This shall be evidenced by the absence of leaks, deformation, permanent set, or interior obstruction. TABLE I. Mandrel diameters and hydrostatic pressure
10、 for flexibility and leak test. Hose size (inside diameter) Mandrell diameter Hydrostatic pressure inches millimeters inches millimeters pounds per square inch Kilopascals 3/16 1/4 5/16 3/8 1/2 5/8 3/4 1 4.8 6.3 7.9 9.5 12.7 15.9 19.0 25.4 5-1/2 7 8 11 14 18 20 24 139.7 177.8 203.2 279.4 355.6 457.2
11、 508.0 635.0 1830 1470 1160 890 820 750 660 440 12617 10135 7998 6136 5654 5171 4551 3034 2.6 Environmental. 2.6.1 Vibration. The hose assemblies shall show no evidence of leakage after being subjected to 500 hours of vibration, followed by 24 hours of refrigeration at -65F and subsequent flexing th
12、rough 90 degree bends in four directions, followed by an additional 24 hours of vibration. The vibration shall be performed with SAE 30 oil circulating at 300F (149C), 175 pounds per square inch (psi) 1207 Kilopascals (kPa), 116F (47C) ambient air temperature, .052 inch 1.3 millimeters (mm) total di
13、splacement (double amplitude), at 30 cycles per second. Prior to vibration, the sample shall be arranged to provide an initial slack of 3/16 inch (4.8 mm) and an offset of 1-1/2 inches (38.1 mm) at an angle of 90 degrees to the direction of stroke. The vibration may be performed continuously or inte
14、rmittently. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-52435A 3 2.6.2 Corrosion resistance. When hose fittings are made of ferrous alloys, either in whole or part, they shall withstand 100 hours of salt spray in accordance with ASTM B117 wit
15、hout showing evidence of damaging corrosion. 2.7 Identification and markings. Identification and markings of the hose assemblies shall be permanent and legible and shall include as a minimum, the manufacturers identification code (CAGE), the engineering drawing part number (see 5.2), and the nationa
16、l stock number (NSN). 2.8 Workmanship. Workmanship shall be such as to produce hose assemblies free from defects such as cracks, cuts, breaks, as well as restricted holes through end fittings, or damaged or burred end fitting threads. 3. QUALITY ASSURANCE PROVISIONS 3.1 Responsibility for inspection
17、. The contractor is responsible for the performance of all inspections (examinations and tests). 3.2 Contractor certification. The contractor shall certify and maintain substantiating evidence that the product offered meets the salient characteristics of this commercial item description and that the
18、 product conforms to the producers own drawings, specifications, standards, and quality assurance practices. The Government reserves the right to require proof of such conformance prior to the first delivery and thereafter as may be otherwise provided for under the provisions of the contract. 4. PRE
19、SERVATION, PACKAGING, PACKING, LABELING, AND MARKING. Preservation, packaging, packing, labeling, and marking shall be as specified in the contract or order (see 5.2). 5. NOTES (This section contains information of a general or explanatory nature that may be helpful, but is not mandatory.) 5.1 Addre
20、sses for obtaining copies of referenced documents. 5.1.1 Non-Government publications. ASTM B117 “Standard Test Method of Salt Spray (Fog) Testing” is available from the American Society for Testing and Materials, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959. Provided by IHSNot for ResaleN
21、o reproduction or networking permitted without license from IHS-,-,-A-A-52435A 4 5.2 Ordering data. Acquisition documents must specify the following: a. Title, number and date of this commercial item description. b. Issue of the DoDISS and industry standards to be cited in the solicitation (see 5.1)
22、. c. Title, number, and revision letter of the applicable engineering drawing (see 2.2). d. Type, size, and length of hose assemblies required (see 1.1, 2.1, and 2.3). e. Engineering drawing part number (see 2.7). f. Selection of applicable level of protection and packaging requirements (see 4.0). 5
23、.3 Cross-reference data. Hose assemblies conforming to this document are interchangeable/ substitutable with hose assemblies conforming to MIL-H-13524B(AT). 5.4 Metric product. Hose assemblies that are to metric dimensions will be considered on the following basis: a. Products manufactured to metric
24、 dimensions will be considered on an equal basis with those manufactured using inch-pound units, provided they fall within specified tolerances using conversion tables contained in the latest revision of IEEE-SI10, and all other requirements of this CID are met. b. If a product is manufactured to me
25、tric dimensions and those dimensions exceed the tolerances specified in the inch/pound units, a request should be made to the contracting officer to determine if the product is acceptable. c. The contracting officer has the option of accepting or rejecting the product. 5.5 Regulatory requirements. T
26、he offeror/contractor is encouraged to use recovered materials in accordance with Public Law 94-580 to the maximum extent practicable. Custodian: Preparing Activity: Army - AT Army - AT Review Activities: (Project 4720-2009-019) Army - EA DLA - CC NOTE: The activities listed above were interested in
27、 this document as of the date of this document. Since organizations and responsibilities can change, you should verify the currency of the information above using the ASSIST Online database at http:/assist.daps.dla.mil. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
