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Machine tap HSS-E 1/8-27
Article no.: 138110 1/8-27
Article code:
- Thread type: NPT
- Flank angle: 60
- Tool material: HSS E
- Standard: DIN 374
- Thread standard: ANSI B 1.20.1
Product details
Technical Data
| Thread size | 1/8-27 NPT | |
| Coating | TiAlN | |
| Thread type | NPT | |
| Flank angle | 60 degrees | |
| Tool material | HSS E | |
| Standard | DIN 374 | |
| Thread standard | ANSI B 1.20.1 | |
| Taper lead form | C | |
| Taper ratio | 1:16 | |
| Shank | Plain shank with h9 | |
| Through-coolant | no | |
| Application for type of drilling | Blind hole; Through hole | |
| Cutting direction | right-hand | |
| Thread pitch | 0.941 mm | |
| Threads per inch | 27 | |
| Overall length L | 100 mm | |
| Shank ⌀ Ds | 7 mm | |
| Shank square □ | 5.5 mm | |
| Tapping hole ⌀ A | 8.5 mm | |
| Tapping hole ⌀ B | 8.25 mm | |
| Thread gauge ⌀ Dmax + 0.05 | 8.74 mm | |
| Tapping hole minimum depth | 12 mm | |
| Thread ⌀ | 10.242 mm | |
| Type of threading tool | Machine tap for conventional machining | |
| Number of clamping slots | 5 | |
| Colour ring | blue | |
| Number of cutting edges Z | 5 | |
| Thread depth | 17 mm | |
| Type of product | Tap |
Identification numbers & Classifications
| Article number | 138110 1/8-27 | |
| EAN / GTIN | 4045197533647 | |
| Manufacturer number | 138110 1/8-27 |
Application Table
N
13
N
18
P
17
P
15
P
12
M
5
K
14
N
16
Description
Version:
A special TiAlN coating for long tool life. Due to interrupted guide thread: reduced tapping torque and improved distribution of lubricant. For use with emulsion (fat content minimum 8%).
Application:
Tapered pipe threads (NPT) to ANSI B1.20.1, for threads with sealants. See the table for the specified minimum size of the tapping hole.
Recommendation:
Tapping hole ⌀ A:
Pre-drill a plain hole without using a reamer.
Tapping hole ⌀ B:
Pre-drill a plain hole and then ream it using a 1:16 taper reamer (see No. 162650). The taper bore ⌀ can then be checked laterally by reference to the Dmax check dimension (see table). Variant B for drilling the tapping hole offers the best process reliability for the tapping operation.
Pre-drill a plain hole without using a reamer.
Tapping hole ⌀ B:
Pre-drill a plain hole and then ream it using a 1:16 taper reamer (see No. 162650). The taper bore ⌀ can then be checked laterally by reference to the Dmax check dimension (see table). Variant B for drilling the tapping hole offers the best process reliability for the tapping operation.
Downloads & documents
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| Type of threading tool | Machine tap for conventional machining | Machine tap for conventional machining | Machine tap for dynamic machining | Machine tap for dynamic machining |
| Overall length L | 100 | 90 | 90 | 90 |
| Tapping hole ⌀ A | 8.5 | 8.5 | 8.5 | 8.5 |
| Tapping hole ⌀ B | 8.25 | 8.25 | 8.25 | 8.25 |
| Tool material | HSS E | HSS E PM | HSS E PM | HSS E |
| Thread depth | 17 | 19.732 | 17 | 19.73 |
| Type of product | Tap | Tap | Tap | Taps |