DOD A-A-54675-1992 BAND AND BAND SET MATRIX DENTAL TOFFLEMIRE《结核菌素牙齿矩阵带子和带子用具》.pdf
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1、c T * U A-A-54b75 b5 7777774 0066770 T INCH-POUND A-A-54 6 15 19 June 1992 COMMERCIAL ITEM DESCRIPTION BAND AND BAND SET, MATRIX, DENTAL, Tofflemire The General Services Administration has authorized the use of this Commercial Item Description as a replacement for Federal Specification GG-B-95E whic
2、h is cancelled. This commercial item description covers matrix bands suitable for use for restorations in individual teeth. Salient characteristics: Classification. The matrix bands shall be of the following types and sizes, as specified: Type I. Bands, Junior size, Tofflemire Sizes Universal, No. 1
3、3 Narrow M.O.D., No. 14 Wide M.O.D., No. 15 Type II. Bands, Adult size, Tofflemire Sizes Universal, No. 1 Wide M.O.D., No. 2 Narrow M.O.D., No. 3 Window-Opening Contra Angle, No. 10 Universal Contra Angle, No. 11 Material. The matrix bands shall be fabricated from austenitic stainless steel type 301
4、, 302, or 304 in accordance with ASTM Designation F899. Hardness. The matrix bands shall have a Knoop hardness of 351 to 402, when tested as specified below, or a Rockwell hardness of C35 to C40, when tested in accordance with ASTM E18. AMSC N/A FSC 6520 DISTRIBUTION STATEMENT A. Approved for public
5、 release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-._ - - - _I_ _ - w 39 A-A-54675 65 9999974 00bb773 3 Thickness, Total Type Size (number) inches Ouantity Ouantitv I A-A-5 4 6 7 5 Unit of issue Style, desiqn and dim
6、ensions. The matrix bands shall be capable of being fitted around a tooth to supply a missing wall or contour, against which the gilling material may be placed and condensed. Bands shall be furnished in pre-stamped designs corresponding to the applicable design and size (number) specified, Junior si
7、ze bands shall be suitable for use with junior size Tofflemire retainers, and adult size bands shall be suitable for use with adult size Tofflemire retainers. All matrix bands shall conform to the design, dimensions, and size (number) shown in Defense Personnel Support Center (DPSC) Drawing No. 2335
8、5. Bands shall be furnished in the applicable size number, thickness, and quantity shown in Table I. The thickness tolerance for all bands shall be 5 0.0002 inch. 1. Junior Universal #13 0.0020 6 Size Toff- Narrow MOD #14 2 12 lemire Wide MOD #15 4 Set 12 12 12 12 12 Package Package Package Package
9、Set Window-Opening Contra-Angle, Universal Contra-Angle #i0 #i1 2. Adult Universal #1 Size Toff- Universal #l lemire Wide MOD #2 Narrow MOD #3 0.0015 0.0015 0.0015 0.0020 0.0015 0.0015 I I 12 12 12 12 4 8 Corrosion resistance. Bands shall show no signs of corrosion when subjected to the boil test in
10、 accordance with ASTM F1089. Flexibility. Bands shall withstand a minimum of two bends before breaking, when tested as specified below. A bend shall consist of one flattening followed by straightening. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-
11、,-A-A-54b75 b5 = 9999974 0066772 3 = A-A-5 4 6 7 5 Finish. The bands shall have a commercial number 2B finish or better. The bands shall be cleanly trimmed and smoothly finished. All bands shall be put through a tumbling procedure to provide smooth peripheral edges free from burrs or other imperfect
12、ions. The surface roughness of bands shall be no more than the root-mean-square average deviation of 15 . microinches when the bands are tested with a suitable surface roughness analyzer. Workmanship. The finish of the bands shall be uniform and free of burrs, sharp edges, pit marks, cracks, wrinkle
13、s, folds, tears or other imperfections. The matrix bands shall be free from any imperfections which may detract from their appearance or impair their serviceability, proper functioning, and intended use. Unit. Packaqe (PG). One package containing twelve matrix bands of one size and thickness specifi
14、ed, constitutes one unit. m. (SE). One set containing twelve junior or twelve adult matrix bands of assorted sizes, constitutes one unit. Quality Assurance Provisions. Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the contractor is responsible for the p
15、erformance of all inspection requirements as specified herein. Except as otherwise specified in the contract r purchase order, the contractor may use his own or any facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. The Gove
16、rnment reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. Records. Records of examinations and tests performed by or for the contractor shall be maintained
17、 by the contractor and made available to the Government upon the Governments request, at any time, or from time to time, during the performance of the contract and for a period of three years after the delivery of the supplies to which such records relate. 3 Provided by IHSNot for ResaleNo reproduct
18、ion or networking permitted without license from IHS-,-,-A-A-54 6 75 Inspection. inspection, as used herein, is defined as both examination (such as visual or auditory investigation without the use of special laboratory appliances or procedures) and testing (determination by technical means of physi
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