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AISI Grade
|
Color code
|
Sizes (dia.)
|
Lengths |
| W-1Water Hardening |
Green
|
Standard fractional sizes including number and letter sizes.1-52 , A-Z , |
3-12'
|
| O-1 Oil Hardening |
Brown
|
Standard fractional sizes including number and letter sizes.1-52 , A-Z , and Metric sizes 2- 25mm. |
3-12'
|
| A-2 Air Hardening |
Blue
|
Standard fractional sizes 1/16 - 2" and Metric sizes 2- 25mm. |
3-12'
|
| S-7 Air Hardening |
Red
|
Standard fractional sizes.1/16 - 1-1/2". |
3-12' |
| D-2 Air Hardening |
White
|
Standard fractional sizes 1/8 - 1-1/2". |
3-12'
|
| M-2 Air Hardening |
Purple
|
Standard fractional sizes 1/8 - 1-1/2". |
3-12'
|
|
AISI Grade
|
Ground Tolerances
|
Lengths |
| O-1 Oil Hardening |
Standard and Oversize Tolerances. |
18" & 36"
|
| A-2 Air Hardening | Standard and Oversize Tolerances. |
18" & 36" |
| 1018 Low Carbon | Standard Tolerances only |
24"
|
|
AISI Grade
|
Diameter
|
|
O-1 Oil Hardening
|
1/2" - 7" |
|
A-2 Air Hardening
|
1/2" -8"
|
|
S-7 Air Hardening
|
1/2" - 8"
|
|
D-2 Air Hardening
|
1/2" - 10"
|