1/8-27 NPS 4FL A BRAND AT-1 EGIAS
AT-1, NPS
Advanced Performance One Pass Thread Mill
PMKNH
Description
The A Brand AT-1 threadmill is designed with a left-hand helix for a small pitch diameter difference between the hole entry and the bottom of the hole, allowing a delay in gauge-out failure. Longer tool life can be achieved with elimination of “zero cutting” for correcting bending.
Features & Benefits
- Unequal Spacing and Variable Lead Flute
for reduced vibration
- Right-Hand Cut and Left-Hand Helix Geometry
increases tool stability
- EgiAs Coating
for exceptional wear resistance
- Ultra-Fine Grain Carbide
for high wear resistance and toughness
Specifications
- Number of Flutes (NOF)
- 4
- Cutting Diameter (DC)
- 0.3020in
- Length of Cut (APMX)
- 0.5930in
- Overall Length (OAL)
- 3.5000in
- Shank Diameter (DCONMS)
- 0.3130in
- Shank Diameter Tolerance Class (TCDCONMS)
- h6
- Thread Size (TDZ)
- 1/8
- Major Diameter (TD)
- 0.1250in
- Thread Form Type (THFT)
- NPS
- Helix Angle (FHA)
- 11
- Helix Direction (FHHAND)
- RH
- Cutting Direction (HAND)
- RH
- Surface Treatment (CTP)
- EgiAs
- Coolant Supply Property (CSP)
- Non-Coolant Through
- Units (UST)
- Inch
Material Compatibility
P
Steel
| Type | Grades | Application |
|---|---|---|
| Alloy Steels | 4140, 4340 | Best |
| High Carbon Steel | 1065 | Best |
| Low Carbon Steel | 1010, 1018 | Best |
| Medium Carbon Steel | 1035, 1045 | Best |
M
Stainless Steel
| Type | Grades | Application |
|---|---|---|
| Stainless Steels | 300 | Best |
| Stainless Steels | 400 | Good |
| Stainless Steels | 17-4PH | Good |
K
Cast Iron
| Type | Application |
|---|---|
| Cast Iron | Best |
N
Non-Ferrous
| Type | Grades | Application |
|---|---|---|
| Aluminum | Casting | Best |
| Aluminum | 6061, 7075 | Best |
H
Hardened Steel
| Type | Grades | Application |
|---|---|---|
| Hardened Steels | 35 HRC | Best |
| Hardened Steels | 35-45 HRC | Best |
Application indicates suitability: Best or Good.
