A-A-51027
14 October 1985
COMMERCIAL ITEM DESCRIPTION
BRUSH, FIBER, ROTARY WHEEL (Dental)
The General Services Administration has authorized the use of this commercial item description in preference to Interim Federal Specification CG-B-007508.
This commercial item description covers rotary wheel fiber brushes used with a dental lathe suitable for cleaning and polishing prosthetic appliances.
The brushes shall be furnished in the following size numbers, as specified:
12, 20, 23, 25, 26
Salient characteristics:
Style and design of brushes shall be as shown in figure 1. Brushes shall have a center block fabricated of a suitably seasoned hardwood. The spindle holes of the center block shall be centered and shall be either tapered or straight so as to fit standard lathe spindle chucks. The fibers of the brushes shall be securely staple-set or wire-drawn with brass or other rust resistant brush wire and shall completely fill each hole. The holes for mounting the fibers shall be evenly spaced around the periphery of the center block. The brushes shall conform to the construction requirements in Table I for applicable size number.
TABLE I. Construction Requirements
|
Size number |
12 |
20 |
23 |
25 |
26 |
|
Center block: |
|
|
|
|
|
|
Minimum number of holes for fiber |
40 |
54 |
75 |
75 |
75 |
|
Number of rows of holes |
2 |
2 |
3 |
3 |
3 |
|
Drill size for hole* |
40-43 |
34-35 |
33-35 |
33-35 |
35 |
|
Fiber: |
|
|
|
|
|
|
Minimum length of fiber held in block, inch |
1/8 |
1/8 |
1/8 |
1/8 |
3/16 |
|
Minimum length outside block, inch |
1/2 |
9/16 |
11/16 |
11/16 |
3/4 |
|
Converging (C) or Straight (5) |
C |
C |
C** |
S |
S |
* The drill sizes shall be as specified in the United States of America Standards Institute publication USA B94.11 (M)-1979.
** Only the outer rows of fiber shall converge.
DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.
For Parts Inquires submit RFQ to Parts Hangar, Inc.
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business