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Article code:
EAN / GTIN:
Manufacturer number:
HOLEX Pro Tap machine tap HSS-E, TiN, UNC: 1/4-20
Article no.: 137910 1/4-20
Article code:
- Thread type: UNC
- Flank angle: 60
- Tool material: HSS E
- Standard: DIN 371
- Tolerance class: 2B
Product details
Technical Data
| Series | Pro Tap | |
| Thread size | 1/4-20 UNC | |
| Coating | TiN | |
| Thread type | UNC | |
| Flank angle | 60 degrees | |
| Tool material | HSS E | |
| Standard | DIN 371 | |
| Tolerance class | 2B | |
| Taper lead form | C | |
| Helix angle | 40 degrees | |
| Shank | Plain shank with h9 | |
| Through-coolant | no | |
| Application for type of drilling | up to 2.5×D for blind holes | |
| Cutting direction | right-hand | |
| Thread pitch | 1.27 mm | |
| Threads per inch | 20 | |
| Thread ⌀ | 6.35 mm | |
| Overall length L | 80 mm | |
| Shank ⌀ Ds | 7 mm | |
| Shank square □ | 5.5 mm | |
| Tapping hole ⌀ | 5.1 mm | |
| Type of threading tool | Machine tap for dynamic machining | |
| Number of clamping slots | 2 | |
| Colour ring | green | |
| Number of cutting edges Z | 2 | |
| Thread depth | 15.9 mm | |
| Type of product | Tap |
Identification numbers & Classifications
| Article number | 137910 1/4-20 | |
| EAN / GTIN | 4062406374839 | |
| Manufacturer number | 137910 1/4-20 |
Application Table
N
24
N
25
N
10
P
24
P
20
P
15
P
8
M
8
N
15
Description
Version:
HOLEX Pro Tap general-purpose tap. Sturdy design suitable for a wide spectrum of materials. Improved HSS-E tool material with low-friction TiN coating.
Application:
For UNC uniform coarse threads ASME − B1.1.
Downloads & documents
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|
| Flank angle | 60 degrees | 60 degrees | 60 degrees | 60 degrees | 60 degrees | 60 degrees |
| Overall length L | 80 mm | 80 mm | 80 mm | 80 mm | 80 mm | 80 mm |
| Thread size | 1/4-20 UNC | 1/4-20 UNC | 1/4-20 UNC | 1/4-20 UNC | 1/4-20 UNC | 1/4-20 UNC |
| Thread pitch | 1.27 mm | 1.27 mm | 1.27 mm | 1.27 mm | 1.27 mm | 1.27 mm |
| Shank square □ | 5.5 mm | 5.5 mm | 5.5 mm | 5.5 mm | 5.5 mm | 5.5 mm |
| Thread depth | 15.9 mm | 15.9 mm | 19.05 mm | 19.05 mm | 15.9 mm | 19.05 mm |
| Application for type of drilling | up to 2.5×D for blind holes | up to 2.5×D for blind holes | up to 3×D for through holes | up to 3×D for through holes | up to 2.5×D for blind holes | up to 3×D for through holes |