NAVY A-A-50469 B-1994 HOOK REGULAR EYE LATCH TYPE《锁存型穿线钩》.pdf

1、A-A-504b9B 9999974 OLb4212 519 i , COMMERCIAL ITEM DESCRIPTION I INCH-POUND I A-A-50469B June 3. 1994 SUPERSEDING September 8, 1989 A-A-50469A HOOK, REGULAR EYE, LATCH TYPE The General Services Administration has authorized the use of this commercial item description in preference to style B, type I

2、 class I of the Military Specification MIL-H-19253C. Abstract. This CID applies to latch type hooks that support a load in a direct-pull configuration, and such load is carried in the base (bowl-saddle) of the hook. The hook is intended for use in material handling operations. Salient characteristi

3、cs: 1. Reauirements. 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 specified in this table will be acceptable provided they meet all other requirement

4、s. The hook shall have a latch type closure device to bridge the throat opening of the hook. The hook shall be constructed with a fixed lifting eye in the same plane as the throat opening. TABLE I. Basic reauirements. I Rated capacity I Inside eye diameter I Throat opening w/latch I I Short tons I I

5、 I I (2,000 pounds) I (minimum) (inches) 1 (minimum) (inches) I I I I I I 1.5 I O. 875 I O. 875 I I 2.0 I l. 125 I O. 937 I I 2.5 I 1.250 I 1.000 I I 5.0 I 2.000 I 1.688 I l I I I IBeneficial comments (recommendations, additions, deletions) and any pertinent1 ldata which may be of use in improving t

6、his document should be addressed to: I /Commanding Officer (Code 156), Naval Construction Battalion Center, I ll000 23rd Avenue, Port Hueneme, CA 93043-4301, by using the Standardization I IDocument Improvement Proposal (DD Form 1426) appearing at the end of this I (document or bv letter. I FSC 4030

7、 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-50469B 2. Material. The hooks shall be constructed conforming to the requirements specified herein. The hook materi

8、al shall have sufficient ductility to permanently deform before failure. The hook shall be zinc-coated in accordance with the manufacturers standard practice. 3. Defects. There shall be no defects when magnetic particle inspected over the entire area of the hook in accordance with ASTM A275, Magneti

9、c Particle Examination of Steel Forgings. A defect is defined as a linear indication revealed by magnetic particle inspection that is greater than 0.125 inch long and whose length is equal to or greater than three times its width. 4. Bated CaDacity and safety factor. Hooks covered by this CID shall

10、be designed with a rated capacity as specified in table I, with a minimum safety factor of 5. 5. Tested caDacitv. The hooks shall lift and hold a load equal to not less than five times the rated capacity of the hook. Tests and examinations shall be in accordance with ASME B30.10. 6. Hook-latch assem

11、bly. The latch assembly shall be manufactured of noncorrosive metal or have an all-weather anticorrosive finish. The latch assembly shall bridge the throat opening in the closed position and retain loose slings or other hoisting devices under slack conditions. Opening the latch may be accomplished m

12、anually or by other methods. 7. Identification markinq. Each hook shall be permanently and legibly marked with the rated capacity in short tons (2,00O/pound/ton). 8. Measurement conversion. Values used herein are in the inch-pound system and are converted to the metric system in table II. TABLE II.

13、Measurement conversion. I Inch-pound Metric I I I I Linear I 0.125 inch 0.875 inch O. 937 inch 1.000 inch 1.125 inches 1.250 inches l. 688 inches 2.000 inches I 03.175 millimeters (mm) I 22.225 mm I 23.813 mm I 25.400 mm I 28.575 mm I 31.750 mm I 42.875 mm I 50.800 mm I I I I Mass (force) I I I I 1.

14、50 ton (2000 pound ton) 13.345 kilonewtons (H) I I 2.00 ton 17.793 kN 1 I 2.50 ton 22.241 kN I I 5.00 ton 44.482 kN I k 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-50469B m 9999974 0164214 391 m A-A-50469B Contractor certification. The cont

15、ractor 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 own drawings, specifications, standards, and quality assurance practices. The Government reserves the right to require proof

16、 of such conformance prior to first delivery and thereafter as may be otherwise provided for under the provisions of the contract. Metric products. Products manufactured to metric dimensions will be considered on an equal basis with those manufactured using inch-pound units, provided they fall withi

17、n specified tolerances using conversion tables contained in the latest revision of FED-STD-376, and all other requirements of this CID are met. If a product is manufactured to metric dimensions and those dimensions exceed the tolerances specified in the inch-pound units, a request should be made to

18、the contracting officer to determine if the product is acceptable. The contracting officer has the option of accepting or rejecting the product. Regulatorv requirements. The offeror/contractor is encouraged to use recovered materials in accordance with Public Law 94-580 to the maximum extent practic

19、able. Preservation. DackaEinn, packing and markinq. Unless otherwise specified in the contract or order, the packaging and packing shall be in accordance with ASTM D3951. Marking shall be as specified in the contract or order. CID based part identification numbers. The following part identification

20、numbering procedure is for Government purposes and does not constitute a requirement for contractor. A-XXXXX-X I I I I I I Size I I CID Number I Designates a Commercial Item Description The size of throat opening with latch is identified by an alphanumeric code. I Size (inches) I Size Designator Cod

21、e I I l I I O. 875 I A I I O. 937 I B I I 1.000 I C I I 1.688 I D I I i I 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-504bqB potes. Purchasers should 9999974 OLb42L5 228 W - A-A-50469B specify rated capacity. Application for copies should b

22、e addressed to the American Society of Mechanical Engineers, United Engineering Center, 345 East 47th Street, New York, NY 10017. ASTM standards are available from ASTM, 1916 Race Street, Philadelphia, PA 19103-1187. National Motor Freight Classification standards are available from National Motor F

23、reight Traffic Association, 2200 Mill Road, Alexandria, VA 22314. Uniform Freight Classification standards are available from National Railroad Freight Committee, 222 South Riverside Plaza, Suite 1120, Chicago, IL 60606. Unless otherwise indicated, copies of federal and military specifications, stan

24、dards, and handbooks are available from the Standardization Documents Order Desk, Bldg. 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094. MILITARY INTERESTS: PREPARING ACTIVITY: Custodians Navy - YD1 Air Force - 99 Navy - YD1 (Project 4030-0250) Review Activities Navy - OS Air Force - 82 DLA - IS 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-