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Manufacturer number:
GARANT Master Form Steel fluteless machine tap with oil grooves HSS-E-PM 1/4-28
Article no.: 139495 1/4-28
Article code:
- Thread type: UNF
- Flank angle: 60
- Tool material: HSS E PM
- Standard: DIN 2174
- Tolerance class: 2BX
Product details
Technical Data
| Coating | TiAlN | |
| Thread type | UNF | |
| Flank angle | 60 degrees | |
| Tool material | HSS E PM | |
| Standard | DIN 2174 | |
| Tolerance class | 2BX | |
| Taper lead form | E | |
| Shank | Plain shank with h9 | |
| Through-coolant | no | |
| Application for type of drilling | up to 3×D for blind holes; up to 3×D for through holes | |
| Cutting direction | right-hand | |
| Thread pitch | 0.907 mm | |
| Threads per inch | 28 | |
| Thread ⌀ | 6.35 mm | |
| Overall length L | 80 mm | |
| Shank ⌀ Ds | 7 mm | |
| Shank square □ | 5.5 mm | |
| Tapping hole ⌀ guide value | 5.95 mm | |
| Number of clamping slots | 5 | |
| Number of cutting edges Z | 5 | |
| Thread depth | 19.05 mm | |
| Series | Master Form | |
| Type of product | Fluteless tap |
Identification numbers & Classifications
| Article number | 139495 1/4-28 | |
| EAN / GTIN | 4062406707187 | |
| Manufacturer number | 139495 1/4-28 |
Application Table
N
38
P
37
P
35
P
27
P
18
P
12
M
12
M
7
N
22
Description
Version:
The latest generation of high-performance fluteless taps, specially developed for use in steel materials.
DIN 2174 (≈ DIN 371 ≤ 3/8; ≈ DIN 376 ≥ 7/16).
Form E (lead-in 1.5 – 2 turns). For deep threads with short lead-in. The thread is tapped almost to the bottom of the hole.
- Optimised polygon geometry for a lower torque.
- Multi-layer HIPIMS coating for high wear resistance.
- HSS-E-PM substrate for exceptional process reliability.
DIN 2174 (≈ DIN 371 ≤ 3/8; ≈ DIN 376 ≥ 7/16).
Form E (lead-in 1.5 – 2 turns). For deep threads with short lead-in. The thread is tapped almost to the bottom of the hole.
Application:
For UNF unified fine threads ASME−B1.1.