1、INCH-POUNDA-A-52550July 30, 1996 SUPERSEDING(see 7.5)COMMERCIAL ITEM DESCRIPTIONPINTLE ASSEMBLY, TOWING, MANUALRELEASE, 18 000, 40 000 AND 100 000 LBSCAPACITYThe General Services Administration has authorized the use of this Commercial ItemDescription (CID) for all federal agencies.1. SCOPE. This CI
2、D covers manual release pintle assemblies that are used on trucks andequipment designed for over the road towing within the specified capacities.2. CLASSIFICATION. Pintle assemblies covered by this CID are listed by type and maximumgross trailer weight (GTW) as follows:Type I - 18 000 pound (lb) max
3、imum (max.) GTWClass 1 - SwivelClass 2 - RigidType II - 40 000 lb max. GTWType III - 100 000 lb max. GTW3. SALIENT CHARACTERISTICS3.1. Materials. Unless otherwise specified herein, materials shall be in accordance with themanufacturers materials specifications for pintle assemblies. The use of recov
4、ered materials madein compliance with regulatory requirements is acceptable providing that all requirements of thisCID are met (see 4.1).Beneficial comments, recommendations, additions, deletions, clarifications, etc. and any otherdata which may improve this document should be sent by letter to: U.S
5、. Army Tank-automotiveand Armaments Command, ATTN: AMSTA-TR-E/BLUE, Warren, MI 48397-5000.AMSC N/A FSC 2540DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-5255023.2
6、Design and construction. Unless otherwise specified herein, the design and construction ofthe pintle assemblies shall be in accordance with figures 1 through 4 for the applicable typerequired.3.2.1 Secondary locking mechanism. The secondary locking mechanism shall consist of either acotter pin with
7、an attached chain or an equivalent locking device such as a snapper pin or aspring-loaded pin (see 7.4). The locking device shall not require the use of any special tools toopen or close it.3.2.2 Lubrication fitting. Lubrication fitting shall be in accordance with SAE J534 and shall have0.25-28 UNS-
8、2A taper threads. Fitting shall be made of steel and shall be zinc-plated inaccordance with ASTM F1135, grade 3 (see figures 3 and 4).3.3 Painting. Cleaning, surface treatment, and painting shall be as specified in the contract(see 7.2).3.4 Identification and marking. Identification and marking of t
9、he pintle assemblies shall include,as a minimum, the part identification number (PIN), maximum GTW, and the manufacturersCAGE code (or equivalent identification) (see 7.3).4. REGULATORY REQUIREMENTS4.1 Recovered materials. The offeror/contractor is encouraged to use recovered materials to themaximum
10、 extent practicable, in accordance with paragraph 23.403 of the Federal AcquisitionRegulation (FAR).5. QUALITY ASSURANCE PROVISIONS5.1 Responsibility for inspection. The contractor is responsible for the performance of allinspections (examinations and tests).5.2 Product conformance. The products pro
11、vided shall meet the salient characteristics of thiscommercial item description, conform to the producers own drawings, specifications, standards,and quality assurance practices, and be the same product offered for sale in the commercialmarket. The Government reserves the right to require proof of s
12、uch conformance.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-525503PINFormer MSPart No.AA52550-1 MS51335-1NOTES:1. Dimensions are in inches and are shown for engineering reference only.2. Applicable provision of ASCC Air Std 11/8, QSTAG-264, a
13、nd STANAG 4101(see 7.7) is marked *. This dimension shall be of such size that it will accept a3 inch (in.) x 1.66 in. lunette.3. Hex nut, slotted, 1.25-12 UNF-2B, carbon steel, grade C, zinc-plated in accordancewith ASTM F1135, grade 3.4. Cotter pin, carbon steel, grade C, zinc-plated in accordance
14、 with ASTM F1135,grade 3, 0.25 in., 3 in. long.FIGURE 1. Type I, class 1, pintle assembly.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-525504PINFormer MSPart No.AA52550-4 MS51335-2NOTES:1. Dimensions are in inches and are shown for engineering
15、 reference only.2. Applicable provision of ASCC Air Std 11/8, QSTAG-264, and STANAG 4101(see 7.7) is marked *. This dimension shall be of such size that it will accept a3 in. x 1.66 in. lunette.FIGURE 2. Type I, class 2, pintle assembly.Provided by IHSNot for ResaleNo reproduction or networking perm
16、itted without license from IHS-,-,-A-A-525505PINFormer MSPart No.AA52550-2 MS51118-1NOTES:1. Dimensions shown are in inches and are for engineering reference only.2. Plain hex nut, slotted, 1-14 UNS-2B, steel; nut height - 0.48 in. minimum (min.),0.52 in. max.; width across flats - 1.42 in. min., 1.
17、44 in. max.; hardness - RockwellB 85.0 min., 100.0 max. Nut shall be zinc-plated in accordance withASTM F1135, grade 3.3. Slotted hex nut, 1.5-12 UNF-2B, carbon steel, grade C, zinc-plated in accordancewith ASTM F1135, grade 3.4. Applicable provision of ASCC Air Std 11/8, QSTAG-264, and STANAG 4101(
18、see 7.7) is marked *. This dimension shall be of such size that it will accept a3 in. x 1.66 in. lunette.FIGURE 3. Type II pintle assembly.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-525506PINFormer MSPart No.AA52550-3 MS51117-1NOTES:1. Dimen
19、sions shown are in inches and are for engineering reference only.2. Plain hex nut, slotted, 1-14 UNS-2B, steel; nut height - 0.48 in. min.,0.52 in. max.; width across flats - 1.42 in. min., 1.44 in. max.; hardness -Rockwell B 85.0 min., 100.0 max. Nut shall be zinc-plated in accordance withASTM F113
20、5, grade 3.3. Applicable provision of ASCC Air Std 11/8, QSTAG-264, and STANAG 4101(see 7.7) is marked *. This dimension shall be of such size that it will accept a3 in. x 1.66 in. lunette.FIGURE 4. Type III pintle assembly.6. PACKAGING. Preservation, packing, and marking shall be as specified in th
21、e contract ororder (see 7.2).Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-5255077. NOTES(This section contains information of a general or explanatory nature that may be helpful, but isnot mandatory.)7.1. Addresses for obtaining copies of refe
22、renced documents.7.1.1 Government documents. Copies of the Code of Federal Regulations (CFR) are availablefrom the Superintendent of Documents, U.S. Government Printing Office, Washington,DC 20402. 7.1.2 Non-Government documents. Copies of ASTM F1135 “Standard Specification forCadmium or Zinc Chroma
23、te Organic Corrosion Protective Coating for Fasteners” are availablefrom the American Society for Testing and Materials (ASTM), 100 Barr Harbor Drive,West Conshohocken, PA 19428-2959. Copies of SAE J534 “Lubrication Fittings”(DoD Adopted) are available from the Society of Automotive Engineers, Inc.
24、(SAE),400 Commonwealth Drive, Warrendale, PA 15096-0001.7.2 Ordering data. Acquisition documents must specify the following:a. Title, number, and date of this CID.b. Issue of Department of Defense Index of Specifications and Standards (DoDISS) to becited in the solicitation, and if required, the spe
25、cific issue of individual documentsreferenced.c. Type, PIN, and quantity of pintle assembly required.d. Cleaning, surface treatment, type of paint, and color required.e. Selection of applicable level and packaging requirements.7.3 Part Identification Number (PIN). The PINs to be used for pintle asse
26、mblies acquired by thisCID are created as follows:AA 52550 - X1 = Type I class 12 = Type II3 = Type III4 = Type I class 2CID numberCID designator7.4 Pintle assembly (type I, class 2). A pintle assembly which uses a spring-loaded pin or asnapper pin as a secondary locking mechanism is recommended for
27、 use as type I, class 2, pintleProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-525508assembly described in this CID because of unlatching problems associated with cotter pin typelocking devices encountered in the field.7.5 Supersession. This CID
28、supersedes MS51335F, dated 29 September 1981; MS51118F,dated 30 May 1972; and MS51117E, dated 21 August 1972.7.6 Cross-reference. Pintle assemblies conforming to this CID are interchangeable/substitutablewith pintle assemblies conforming to MS51335F, MS51118F, and MS51117E.7.7 International interest
29、. Certain provisions of this CID (figures 1, 2, 3, and 4) are the subject ofinternational standardization agreement (ASCC AIR STD 11/8, QSTAG 264, andSTANAG 4101). When amendment, revision, or cancellation of this CID is proposed that willmodify the international agreement concerned, the preparing a
30、ctivity will take appropriate actionthrough international standardization channels, including departmental standardization offices, tochange the agreement or make other appropriate accommodations.MILITARY INTERESTS: CIVIL AGENCY COORDINATING ACTIVITY:GSA - FSSCustodians:Army - AT Preparing Activity:Navy - YD1 Army - ATAir Force - 99Review Activities: (Project 2540-0424)Army - ARNavy - MCAir Force - 84DLA - CSProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
