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Manufacturer number:
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Machine tap HSS-E, TiAlN, NPT: 3/4-14
Article no.: 519864
Catalog no.: 138110
Article code:
Product details
Technical Data
| Through-coolant | no | |
| Cooling lubricant | yes | |
| Interface position | on the machine | |
| Holder type | plain shank | |
| Shank diameter DS | 20 mm | |
| Thread type | NPT | |
| Cutter diameter D | 26.568 mm | |
| Nominal diameter of inch thread D | 0.75 in | |
| Thread D | 3/4-14 NPT | |
| Thread pitch | 1.814 mm | |
| Turns per inch | 14 | |
| Taper lead angle | 23 degrees | |
| Number of teeth | 5 | |
| Taper ratio | 1:16 | |
| Type of thread-cutting tool | machine tap for conventional machining | |
| Taper lead form | C | |
| Application for type of drilling | through hole; blind hole | |
| Number of clamping slots | 5 | |
| Core hole diameter | 22.7 mm; 23.3 mm | |
| Tapping hole minimum depth | 23 mm | |
| Flank angle | 60 degrees | |
| Micrometer standard | yes | |
| Maximum check gauge diameter | 23.67 mm | |
| Check dimension tolerance | 0.05 | |
| Square-drive width across flats □ | 16 mm | |
| Tool material | HSS-E | |
| Coating | TiAlN | |
| Interface | joint 1 | |
| Usable length L1 | 46.4 mm | |
| Overall length L | 150 mm | |
| Cutting direction | right-hand cutting | |
| Standard | DIN 374 | |
| Machining method | thread processing internal (EGI) | |
| Colour ring | blue | |
| Type of product | taps |
Identification & Classification
| Article number | 519864 | |
| Catalog number | 138110 | |
| EAN / GTIN | 4045197533708 | |
| Manufacturer number | 138110 3/4-14 | |
| Article class | 11H | |
| Manufacturer/responsible person | Hoffmann Supply Chain GmbH & Co. KG, Poststraße 15, 90471 Nürnberg, Germany, www.hoffmann-group.com |
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.