DOD A-A-53845-1989 BURS DENTAL FINISHING (TUNGSTEN CARBIDE)《修正牙齿粘附物(碳化钨)》.pdf

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1、- A-A-53845 65 R 799797Li 0032LbY M t ri P COMMERCIAL ITEM DESCRIPTION c-“lo- al A-A-5 3 8 4 5 10 April 1989 BURS, DENTAL, FINISHING (Tungsten Carbide) The General Services Administration has authorized the use of this Commercial Item Description in preference to Military Specification MIL-B-37036A

2、dated 30 December 1985. This commercial item description covers tungsten carbide finishing burs suitable for use with friction grip handpieces in finishing dental restorations. Sal ient character ist ic s : Head shapes and size numbers. burs shall be of the following head shapes and size numbers as

3、specified below (see notes). The tungsten carbide finishing Round Size No. 7002 Size No. 7004 Size No. 7008 Size No. 9004 Flame Size No. 7106 Cone Size No. 7204 Size No. 7206 Inverted Taper Size No. 7304 Material. Egg Size No. 7406 Tapered Size No. 7702 Size No. 9713 Bullet Size No. 7801 Size No. 78

4、03 Size No. 9803 Needle Size No. 7901 Size No. 7902 Head. cemented tungsten carbid,e with cobalt binder. Titanium or tantalum carbide, or both, may be added to achieve the required properties. The bur heads shall be fabricated from a solid piece of fl THIS DOCUMENT CONTAINS /i3 PAGES. - AMSC N/A FSC

5、 6520 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-53845 A-A-53845 65 ?-Ll 0032365 T 5 MAY HAVE FLAT NO IF DIAMETER OF FLAT IS LES$ THAN .O45 INCH 7 / ANGLE SHAL

6、L BE 60 OR LESS I THIS EDGE: SHACL BE BROKEN t-:e _ii DIMENSIONS ARE IN INCHES. FIGURE 1, SHAPE AND DIMENSIONS OF BUR SHANK 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- I A-A-53845 65 m 3779774 0032Lbb L m I - CUTTING END (TYPICAL) ROUND EG C F

7、LAME . CONE A-A-53845 INVERTED TA PER TAPERED BULLET NEEDLE FIGURE 2 -SHAPE OF BUR HEADS 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-538Ll5 6.5 977777Ll 0032367 3 I 8 A-A-5 3 845 Shank, neck and base of bur- The shank, neck and the base of

8、the burs shall be fabrLcated from S5 tool steel as specified in ASTM A681 for composition cmPy oz class 4 ype 420C corrosion-resisting steel as specified is ASTM F899 for composition onPy. Bur shape and dimensions. Bur shank. The shape and dimensions of the bur shank shall be in accordance with Figu

9、re 1. Bur head, neck and overall lenqth of bur. The bur head sha11 be in accordance with Figure 2 for the indicated shape. shall be in accordance with the dimensional requirements shown in Table 1 or the shape specified. The bur head,: neck and-overall length of the burs TABLE I. Head, neck and over

10、all-length dimensions. Shape ISize No. IHead; . IMinimum Maximum loverall leng,th I, Idis 90Q4 Bur, Dental, Bullet 9803 Finishing, Friction Grip Angle Handpiece, Tungsten Carbicle, Burc Dental, Tapered 9713 Finishing, Friction Grip Angle Handpiece, Tungsten Carbide, Na. 9713, 1Qs NO. wa3, 1.0s Order

11、ing data. labeling and marking must be as specified in the contract and./or order. Intermediate/exterior package quantities and 1 2. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-L A-A-53845 65 m 7777774 0032176 4 MILITARY INTERESTS: Custodians: Ar

12、my - MD Navy - MS Air Force - 03 A-A-5 3 8 4 5 PREPARING ACTIVITY: DoD-MB Agent: DLA-DM CIVIL AGENCY COORDINATING ACTIVITIES: VA-OSS PHS FDA-MPQAS 05971 13 PROJECT NO. 6520-2221 LOCATION: NCR Disk No. 7 frU.S. GOVERNMENT PRINiNC OFFICE: I989 - 63/12621 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-