A-A-51997
22 June 1987
COMMERCIAL ITEM DESCRIPTION
MANDREL, DENTAL HANDPIECE,
No. 303
The General Services Administration has authorized the use of this commercial item description.
This commercial item description covers a No. 303 dental handpiece mandrel for holding abrasive wheels and disks.
Classifications.
Class AL. Latch angle handpiece
Class S. Straight handpiece
Salient characteristics:
The mandrel shall be a No.303 regular head size mandrel suitable for securely holding abrasive wheels and disks in dental polishing and grinding procedures.
The mandrel shall be fabricated from Class 3, austenitic, or Class 4, martensitic, stainless steel in conformance with Federal Specification GG-I-526. Martensitic and austenitic steel mandrels shall show no corrosion, when subjected to the boil test of Federal Specification GG-I-526. Martensitic steel mandrel shall also pass the copper sulfate test of Federal Specification GG-I-526. Mandrel shall have a smooth, bright polished finish, without defects such as cracks or burs.
The mandrel shall consist of a one-piece threaded mandrel body, a corrosion resisting washer, and a matching threaded screw with a slotted head. The mandrel shall be furnished in the applicable Class, as specified. Class AL mandrel shall be suitable for use in a latch type angle dental handpieces. Class S mandrell shall be suitable for use in straight dental handpieces and chucks of dental laboratory lathes. Mandrel shall be in accordance with Figure 1.
The total indicated runout of the mandrel shall be no greater than 0.003 inch, for both Class AL and S mandrels.
DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.
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