1、Beneficial comments, recommendations, additions, deletions, clarifications, etc. and any data that may improve this document should be sent to DAMI_STANDARDIZATIONconus.army.mil or U.S. Army RDECOM, Tank Automotive Research, Development and Engineering Center, ATTN: RDTA-EN/STND/TRANS MS #268, 6501
2、E. 11 Mile Road, Warren, MI 48397-5000. Since contact information can change, you may want to verify the currency of this address information using the ASSIST Online database at https:/assist.daps.dla.mil/online/. AMSC N/A FSC 2590 INCH-POUND A-A-52502B May 11, 2010 SUPERSEDING A-A-52502A January 16
3、, 1998 COMMERCIAL ITEM DESCRIPTION VALVE ASSEMBLY, POPPET, HULL DRAIN-VEHICULAR, 3 INCH The General Services Administration has authorized the use of this commercial item description (CID) for all Federal agencies. 1. SCOPE. This CID covers requirements for a 3 inch (in.) hull drain poppet valve ass
4、embly, which is used to drain water out of vehicles. The valve assembly consists of a valve, seat, spring, and knob. 2. SALIENT CHARACTERISTICS 2.1 Materials. Material shall be as specified herein or of equivalent strength and characteristics. The use of recovered material made in compliance with re
5、gulatory requirements is acceptable provided that all requirements of this CID are met (see 3.1). 2.1.1 Seat and valve. The seat and the valve shall be made of aluminum, Unified Numbering System (UNS) A03550, A03560, or A96061 (tempered T6). Both machined and unmachined surfaces shall be anodized. 2
6、.1.2 Knob. The knob shall be made of steel, UNS G10100 to UNS G10250, and zinc plated in accordance with ASTM B633. 2.1.3 Spring. The spring shall be made of corrosion resistant steel wire in accordance with ASTM A313/A313M. 2.2 Design and construction. The valve assembly shall be designed and const
7、ructed in accordance with figures 1 thru 4. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-52502B 2 2.3 Identification markings. Identification markings shall be permanent and legible and shall include, as a minimum, the manufacturers identifica
8、tion code (CAGE), the contract number, and the part or identifying number (PIN) (see 6.1). 3. REGULATORY REQUIREMENTS 3.1 Recovered material. Recycled, recovered, or environmentally preferable materials should be used to the maximum extent possible provided that the material meets or exceeds the ope
9、rational and maintenance requirements, and promotes economically advantageous life cycle costs. The offeror/contractor is encouraged to use recovered materials to the maximum extent practicable, in accordance with paragraph 23.403 of the Federal Acquisition Regulation (FAR). 4. PRODUCT CONFORMANCE P
10、ROVISIONS 4.1 Responsibility for inspection. The contractor is responsible for the performance of all inspections (examinations and tests). 4.2 Product conformance. The products shall meet the salient characteristics of this CID, conform to the producers own drawings, specifications, standards, and
11、quality assurance practices, and be the same product offered for sale in the commercial market. The Government reserves the right to require proof of such conformance. 5. PACKAGING Preservation, packaging, packing, labeling, and marking for the desired level shall be as specified in the contract (se
12、e 6.3). 6. NOTES (This section contains information of a general or explanatory nature that may be helpful, but is not mandatory.) 6.1 Part or identifying number (PIN). The following part identification numbering system is for Government purposes and does not constitute a requirement for the contrac
13、tor. The PINs to be used for the valve assembly acquired to this CID are created as follows: AA 52502 - X 1 - Valve assembly 4 - Knob 2 - Seat 5 - Spring 3 - Valve CID number CID designator Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-52502B 3
14、 PIN Former MS part number AA52502-1 MS51345-2 NOTES: 1. Dimensions shown are for engineering reference only. 2. Corrosion resistant, steel spring pins with 0.125 in. nominal diameter and a length of 0.750 +0.015 in. (see 6.5). FIGURE 1. Valve assembly. Provided by IHSNot for ResaleNo reproduction o
15、r networking permitted without license from IHS-,-,-A-A-52502B 4 PIN Former MS part number AA52502-2 MS51344-2 NOTES: 1. Dimensions are in inches. Unless otherwise specified, tolerances are: Machined surfaces 2 decimals 0.015, 3 decimals 0.005, angles 0 30. Unmachined surfaces 2 decimals 0.031, angl
16、es 1. 2. Unless otherwise specified, all machined surfaces shall be 125 microinches where roughness symbol is shown. All burrs and sharp edges shall be removed. FIGURE 2. Seat. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-52502B 5 PIN Former M
17、S part number AA52502-3 MS51343-2 NOTES: 1. Dimensions are in inches. Unless otherwise specified, tolerances are: Machined surfaces 2 decimals 0.015, 3 decimals 0.005, angles 0 30. Unmachined surfaces 2 decimals 0.031, angles 1. 2. Unless otherwise specified, all machined surfaces shall be 125 micro
18、inches root mean square (rms) where surface roughness symbol is shown. All burrs and sharp edges shall be removed. FIGURE 3. Valve. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-52502B 6 PIN Former MS part number PIN Former MS part number AA525
19、02-4 MS51349-1 AA52502-5 MS51350-1 SPRING SPECIFICATION DIAMETER OF WIRE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DIAMETER OF COIL (INSIDE) . . . . . . . . . . . . . . . . . . . . . FREE LENGTH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ACTIVE COILS . . . .
20、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TOTAL COILS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DIRECTION OF HELIX . . . . . . . . . . . . . . . . . . . . . . . . . . . . LOAD AT COMPRESSED LENGTH OF 1.03 . . . . . . . . . . . SPRING RATE . . . . . . . .
21、 . . . . . . . . . . . . . . . . . . . . . . . . . . . SOLID LENGTH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TYPE OF ENDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SQUARENESS OF ENDS IN FREE POSITION WITHIN 3 0.095 0.91 0.03 2.360 0.020 6.25 7.50 OP
22、TIONAL 16 1.5 POUNDS (LB) 12 LB/IN 0.81 MAX CLOSED ENDS GROUND NOTES: 1. Dimensions are in inches. Unless otherwise specified, tolerances are: a. Knob tolerances are: on 2 decimals 0.015, on 3 decimals 0.005, angles 030. b. Spring tolerances are: on 2 decimals 0.031, on 3 decimals 0.020. 2. All knob
23、 machined surfaces shall be 125 microinches. All burrs and sharp edges shall be removed. FIGURE 4. Knob and spring. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-52502B 7 6.2 Addresses for obtaining copies of referenced documents. 6.2.1 Governm
24、ent publications. The Federal Acquisition Regulation (FAR) may be obtained at the following website: http:/www.acquisition.gov/far. 6.2.2. Non-Government publications. Copies of SAE-HS-1086 “Metals and Alloys in the Unified Numbering System” are available from the Society of Automotive Engineers, In
25、c. (SAE), 400 Commonwealth Drive, Warrendale, PA 15096-0001 or www.sae.org; Copies of ASTM A313/A313M “Standard Specification for Steel Wire, Music Spring Quality” (DoD Adopted), and ASTM B633 “Standard Specification for Electrodeposited Coatings of Zinc on Iron and Steel” (DoD Adopted) are availabl
26、e from the American Society for Testing and Materials, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959 or www.sae.org. 6.3 Ordering data. Acquisition documents must specify the following: a. Title, number, and date of this CID. b. PIN number and quantity required. c. Packaging requirements (
27、see 5). d. Issue of Department of Defense Index of Specifications and Standards (DoDISS) to be cited in the solicitation and if required the specific issue of individual documents referenced. 6.4 Cross-reference data. Valve assemblies and components are interchangeable/substitutable with valve assem
28、blies and components conforming to MS51343B(AT), MS51344C(AT), MS51345B(AT), MS51349A(AT), and MS51350A(AT). 6.5 Replacement spring pins. For replacement spring pins, use NASM171401 thru NASM171900, part no. MS171530. 6.6 Key words. Knob M9 ACE Pin Seat Spring Water Provided by IHSNot for ResaleNo r
29、eproduction or networking permitted without license from IHS-,-,-A-A-52502B 8 MILITARY ACTIVITY: Custodian: Preparing Activity: Army - AT Army - AT Review Activity: (Project 2590-2010-003) DLA - CC NOTE: The activities listed above were interested in 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 https:/assist.daps.dla.mil/online/. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
