NAVY A-A-50472 A-1988 HOOK SWIVEL LATCH TYPE《锁存型转钩》.pdf

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1、-# f =+.Y TABLE I. Basic requirements. I I Rated capacity I Throat opening with latch I A-A-50472A September 21, 1988 SUPERSEDING A-A-50472 November 14, 1983 COMMERCIAL ITEM DESCRIPTION HOOK, SWIVEL, LATCH TYPE The General Services Administration has authorized the use of this comercial item descrip

2、tion in preference to Style 6, Type II and Type III of Military Specification MIL-H-19253C. Abstract: This commercial item description (CID) applies to latch type swivel hoist hooks that support a load in a direct-pull configuration, and such load is carried in the base (bowl-saddle) of the hook. Th

3、e hook is intended for use in material handling operations. Salient characteristics: Requirements. Hoist hooks shall be as specified herein and shall be in accordance with the basic requirements shown in table I for the rated capacity and throat openings. Hooks of a rated capacity greater than speci

4、fied in this table will be acceptable provided they meet all other requirements. to bridge the throat opening of the hook. The hook shall have a latch type closure device I I 2 short tons _I Not less than 0.93 inch I 10 short tons . I Not less than 1.91 inch I 30 short tons I Not less than 3.00 inch

5、es I 9 Material. The hooks shall be constructed of an alloy steel that will produce hooks conforming to the requirements specified herein. The hook material shall have sufficient ductility to permanently deform before failure. The hook shall be zinc-coated in accordance with the manufacturers standa

6、rdkpractice. I_ 6 T“; (Beneficial comments (recomnendations, additions, deletions) and any pertinent! Idata which may be of use in improving this document should be addressed to: I IDocument Improvement Proposal (DD Form 1426) appearing at the end of this JCommanding Officer (Code 156), Naval Constr

7、uction Battalion Center, Port I )Hueneme, CA 93043-5000, by using the self-addressed Standardization I Idocument or by letter. I I FSC 4030 DISTRIBUTION STATEMENT A. unlimited. Approved for public release; distribution is a o THIS DOCUMENT CONTAINS 3 PAGES. 7 fl -. _ Provided by IHSNot for ResaleNo

8、reproduction or networking permitted without license from IHS-,-,-I A-A-50472A Defects. There shall be no defects when magnetic particle inspected over the entire area of the hook in accordance with ASTM A 275, defect is defined as a linear indication revealed by magnetic particle inspection that is

9、 greater than 0.725-inch long and whose length is equal to, or greater than, three times its width. Rated capacity. The hooks, when used in various material handling operations in lifting and moving cargo, shall not be utilized with loads greater than the rated capacity specified in table I. Tested

10、capacity. The hooks shall lift and hold a load equal to not less than two times the rated capacity of the hook. examinations shall be in accordance with ANSI 830.10. A Tests and Hook-latch assembly. The latch assembly shall be manufactured of noncorrosive metal or have an all-weather anticorrosive f

11、inish. The latch assembly shall bridge the throat opening in the closed position, and retain loose slings or other hoisting devices under slack conditions. other methods, Unlocking the latch may be accomplished manually or by Identification marking. marked with the rated capacity in short tons. Each

12、 hook shall be permanently and legibly Contractor certification. The contractor shall certify and maintain substantiating evidence that the product offered meets the salient characteristics of this CID, and that the product conforms to the producers awn drawings, specifications, standards, and quali

13、ty assurance practices. Government reserves the right to require proof of such conformance prior to first delivery and thereafter as may be otherwise provided for under the provisions of the contract. Metric product. Products manufactured to metric dimensions will be considered on an equal basis wit

14、h those manufactured using inch-pound units, provided they fall within specified tolerances using conversion tables contained in the latest revision of Federal Standard No. 376, and all other requirements of this CID are met. The If a product is manufactured to metric dimensions and those dimensions

15、 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. The contracting officer has the option of accepting or rejecting the product. Regulatory requirements. The offeror/contractor is encouraged to use

16、recovered materials in accordance with Public Law 94-580 to the maximum extent practical. Preservation. packaqinq, Racking, labeling, and marking. The preservation, packaging, packing, labeling, and marking shall be as specified in the contract or order. 2 Provided by IHSNot for ResaleNo reproductio

17、n or networking permitted without license from IHS-,-,-A-A-50i.172A i.10 D 7777774 0002LL5 T D A-A-50472A 1430 Broadway, New York, NY 10018. ASTM A 275 is available from the American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103. : MILITARY INTERESTS: PREPARING ACTIVITY: Custodians Navy - YO 1 Navy - YD Air Force - 99 Project 4030-0208 . Review Activities Air Force - 82 DLA - IS User Activities Navy - SH, OS 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-