1、A-A-52427 W 9999974 OLrlL969 2T7 A-A-5242 7 February 12, 1993 SUPERSEDES MS 5 19833 30 August 1982 COMMERCIAL ITEM DESCRIPTION NUT, PLAIN, SINGLE BALL SEAT, HEXAGON WHEEL MOUNTING - 3/4 AND 1-1/8 INCH The General Services Administration has authorized the use of this commercial item description as a
2、 replacement for MS51983E which is canceled. 1.0 Abstract. This commercial item description (CID) covers a hexagon wheel mounting plain, single ball seat nut which is used to mount and secure wheels to the vehicles axle and is referred to herein as the nut. 2.0 Salient characteristics. 2.1 Materials
3、. The nut shall be made of carbon steel in accordance with SAE J995-88 Grade 5, and case hardened to a surface hardness of Rockwell 15N - 85.5 and to a depth of 0.005 to 0.012 inches or alloy steel that is through hardened to produce a core hardness reading of Brinell 223-277 and to a surface hardne
4、ss of Rockwell 15N-69.5-84. The surface shall be zinc plated per ASTM B633, Type II, Class SC3 (FE/Znl3), except threads which are not fully plated. The use of recovered material made in compliance with regulatory requirements is acceptable providing that all requirements of this CID are met (see 5.
5、5). 2.2 Design and construction. Unless otherwise specified in figure 1, the nut shall be designed and constructed in accordance with SAE 5694-88 and shall be capable of sustaining the following proof load requirement without failure or permanent set. The proof loads shall be verified in accordance
6、with SAE 5995-79. (lbs) of tensile force. tensile force. a. 3/4 size nut shall have a minimum proof load test of 37,000 pounds b. 1-1/8 size nut shall have a minimum proof load test of 87,000 lbs c. The nut shall be removeable by hand after load is released. Beneficial comments, recommendations, add
7、itions, deletions and any other data which may improve this document should be sent by letter to: U.S. Army Tank-Automotive Command, ATTN: AMSTA-GDS, Warren, MI 48397-5000. FSC 5310 AMSC N/A DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Licensed by Information Han
8、dling ServicesProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-52427 9999974 0141970 TL9 D A-A- 5 2 42 7 NOTE: It may be necessary to use a manual wrench or other means to start nut in motion after load has been released to remove nut. Such wrench
9、ing is permissible providing that it is restricted to one half turn. 2.3 Markings. Markings shall be as specified in figure 1. 2.4 Workmanship. The nut shall be free from irregularities such as burrs, cracks, sharp edges, or any other defects affecting serviceability or appearance. 3.0 Oualitv assur
10、ance Drovisions. 3.1 Responsibility for inspection. The contractor is responsible for the performance of all inspection requirements (examinations and tests). 3.2 Contractor certification. The contractor shall certify and maintain substantiating evidence that the product offered meets the salient ch
11、aracteristics of this commercial item description and that the product conforms to the producers own drawings, specifications, standards, and quality assurance practices. Items with known defects shall not be submitted for Government acceptance. The Government reserves the right to require proof of
12、such conformance prior to the first delivery and thereafter as may be otherwise provided for under the provisions of the contract. 4.0 Preservation, packaging, packing, labeling, and marking. Preservation, packaging, packing, labeling, and marking shall be as specified in the contract or order (see
13、5.2). 5.0 Notes. (This section contains information of a general or explanatory nature that may be helpful, but is not mandatory.) 5.1 Addresses for obtaining copies of referenced documents. 5.1.1 Non-Government publications. ASTM 8633-85 “Standardization Specification for Electrodeposited Coatings
14、of Zinc on Iron and Steel“; can be obtained from the American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103-1187. SAE 5995-79 “Mechanical and Material Requirements for Steel Nuts, Standards“ and SAE 5694-88 “Disc Wheel/Hub or Drum Interface Dimensions - Commercial Vehic
15、les“ are available from the the Society of Automotive Engineers, Inc. (SAE), 400 Commonwealth Drive, Warrendale, PA 15096. 5.2 Ordering data. Acquisition documents must specify the following: a. Title and date of this CID. b. Issue of the DODISS to be cited in the solicitation and and the specific i
16、ssue of individual documents referenced (see 5.1). c. Part or identification number PIN (see figure 1 and 5.3). d. Selection of applicable level and packaging requirements (see 4.0). 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-5 2 427 D 999
17、9974 0343973 955 D Former alloy steel part MS no. -1 -2 -3 -4 A-A- 52 4 2 7 Former steel part no. MS part no. Drawing part no. MS51983-5 537802 MS51983-6 537801 MS51983-7 537806 MS51983-8 537805 STAMP L FOR LEFT HAND THREAD STAMP R FOR RIGHT HAND THREAD USE RAISED OR RECESSED LETTERS 0.25 MINIMUM HE
18、IGHT LOCATION FOR MANUFACTURER S LOGO AND LOT IDENTIFICATION NUMBER CHAMFER OR RADIUS SECTION A-A WITHIN .O05 FIM RUNOUTBETWEENPD OF THREAD AND .875 R BALL SEAT NOT TO EXCEED 0.010 FIM “B“ 0.78 +.O12 - 1.16 +.o12 - NOTE: Referenced dimensions shall be in accordance with CAE 5694. “C“ -280 +.O30 - .1
19、70 +.o20 - PIN no. A52427-L-0.750 A52427-R-0.750 A52427-L-1.125 A52427-R-1.125 Hand Left (L) Right (R) Left (L) Right (R) Thread Designat ion “A“ 1 1/8-16-UN-2B FIGURE 1. Wheel mounting nut design, configuration, and part number. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted
20、 without license from IHS-,-,-A-A-52427 9999974 0343972 89L = a A-A- 5 2 42 7 5.3 CID based part identification number (PIN). The following part identification numbering procedure is for Government purposes and does not constitute a requirement for the contractor (see figure i). A 52427 - X - XXXXX
21、Nut thread size: 0.750: 3/4 - 16 UNF-2B 1.125: 1 1/8 - 16 UN-2B Thread hand: L - Left hand thread R - Right hand thread I CID number. CID Designator. 5.4 Cross-reference. Nuts conforming to this CID are interchangeable/ substitutable with nuts conforming to MS51983E, dated 30 August 1982. 5.5 Regula
22、tory requirements. The offeror/contractor is encouraged to use recovered material in conformance with Public Law 94-580 to the maximum extent practicable. subjected to the following requirements: 5.6 Metric products. Wheel mounting nuts made to metric dimensions are a. Products manufactured to metri
23、c 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 ASTM $380, and all other requirements of this Commercial Item Description are met. If a product
24、 is manufactured to metric 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. The contracting officer has the option of accepting or rejecting the product. b. c. Custodians: Army - AT Air Force - 99 Preparing activity Army - AT (Project 5310-1835 Review activities: Army - MI, ER Air Force - 82 DLA - IS User activities: Army - ME 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
