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Article no.: 139729 1/8-27
Plain shank thread mill 1/8-27
Article no.: 139730 1/8-27
Article code:
- Thread type: NPT
- Flank angle: 60
- Tool material: Solid carbide
- Standard: ANSI B 1.20.1
- Taper ratio: 1:16
Product details
Technical Data
| Thread size | 1/8-27 NPT | |
| Coating | TiAlN | |
| Thread type | NPT | |
| Flank angle | 60 degrees | |
| Tool material | Solid carbide | |
| Standard | ANSI B 1.20.1 | |
| Taper ratio | 1:16 | |
| Shank | DIN 6535 HA with h6 | |
| Through-coolant | yes | |
| Application for type of drilling | for blind holes; for through holes | |
| Countersink angle | 90 degrees | |
| Thread pitch | 0.941 mm | |
| Threads per inch | 27 | |
| Nominal ⌀ DC | 8.16 mm | |
| Shank length Ls | 45 mm | |
| Overall length L | 70 mm | |
| Shank ⌀ Ds | 12 mm | |
| Neck ⌀ D1 | 11.1 mm | |
| Programming value for countersink Lc | 10.4 | |
| No. of teeth Z | 3 | |
| Feed fz in steel < 1100 N/mm2 | 0.04 mm | |
| Shank tolerance | h6 | |
| Number of clamping slots | 3 | |
| Colour ring | green | |
| Internal/external application | Internal | |
| Hole ⌀ | 8.16 mm | |
| Thread depth | 6 mm |
Identification numbers & Classifications
| Article number | 139730 1/8-27 |
Application Table
N
220
N
220
N
170
P
170
P
150
P
120
P
80
P
60
H
35
M
90
M
70
S
60
K
120
N
180
Description
Version:
Corrected thread profile for milling exact internal threads (ensure stable clamping conditions).
Incorporating a countersink profile for a 90° countersink.
Incorporating a countersink profile for a 90° countersink.
Advantage:
Countersinking and thread milling in one operation!
Application:
Tapered pipe threads (NPT) to ANSI B1.20.1, for threads with sealants.