A-A-51185
0.020 inches, and not more than 0.083 inches. The tolerance on 1.250 inch width blades shall be not less than 0.020 inches, and not more than 0.110 inches. The tolerance on 1.500 inch width blades shall be not less than 0.020 inches, and not more than 0.135 inches. The tolerance on 2.000 inch width blades shall be not more than 0.145 inches. The width of the blade supplied shall be consistent on each blade within ± 0.020 inches.
TABLE II. Blade width.
|
Width designation |
Blade width (in.) |
Width designation |
Blade width (in.) |
|
1 |
0.250 |
5 |
1.000 |
|
2 |
0.375 |
6 |
1.250 |
|
3 |
0.500 |
7 |
1.500 |
|
4 |
0.750 |
8 |
2.000 |
6. Blade thickness. Unless otherwise specified [see ordering data), the thickness of the blade to be furnished shall be selected from table III. The thickness tolerance of blades 0.024 inch and less shall be ±0.0010 inch. The thickness tolerance of blades 0.050 inch and greater shall be ± 0.0015 inch. The thickness tolerance of all other blades shall conform to ASME 894.51M.
TABLE III. Blade thickness.
|
Thickness designation |
Blade thickness (in.) |
|
A |
0.020 |
|
B |
0.025 |
|
C |
0.035 |
|
D |
0.042 |
|
E |
0.050 |
7. Pitch. Unless otherwise specified (see ordering data), the pitch (teeth per inch) of the blade to be furnished shall be selected from the table IV.
8. Blade length. The blades shall be furnished in coils or welded specified by the procuring activity (see ordering data). The length of the coil or the welded length shall be as specified (see ordering data). The tolerance of the blade length shall be specified (see ordering data). When coils are supplied, there shall be no more than two welds per coil. When welded lengths are supplied, there shall be no more than one weld per blade.
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