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Article code:
EAN / GTIN:
Manufacturer number:
HOLEX Clever Tap machine tap 1/4-28
Article no.: 138004 1/4-28
Article code:
- Thread type: UNF
- Flank angle: 60
- Tool material: HSS E
- Norm: DIN 371
- Tolerance class: 2B
Product details
Technical Data
| Serie | CleverTap | |
| Thread size | 1/4-28 UNF | |
| Coating | uncoated | |
| Thread type | UNF | |
| Flank angle | 60 degrees | |
| Tool material | HSS E | |
| Norm | 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 | 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 ⌀ | 5.5 mm | |
| Type of threading tool | Machine tap for conventional machining | |
| Number of clamping slots | 3 | |
| Colour ring | without | |
| Number of cutting edges Z | 3 | |
| Thread depth | 15.9 mm | |
| Type of product | Taps |
Identification numbers & Classifications
| Article number | 138004 1/4-28 | |
| EAN / GTIN | 4067263162407 | |
| Manufacturer number | 138004 1/4-28 |
Application Table
N
13
N
13
P
12
P
12
P
6
Description
Version:
HOLEX Clever Tap:
Sturdy tap for conventional standard applications. High-quality HSS-E tool material and geometry for steels. Surface: Bronze-coloured tempered thread profile.
Sturdy tap for conventional standard applications. High-quality HSS-E tool material and geometry for steels. Surface: Bronze-coloured tempered thread profile.
HSS-E
Application:
For UNF uniform fine threads ASME − B1.1.
Downloads & documents
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|
| Taper lead form | C | C | C | C | C | C |
| Flank angle | 60 | 60 | 60 | 60 | 60 | 60 |
| Through-coolant | no | no | no | no | no | no |
| Norm | DIN 371 | DIN 371 | DIN 374 | DIN 371 | DIN 371 | DIN 371 |
| Shank square □ | 5.5 | 5.5 | 3.4 | 5.5 | 5.5 | 5.5 |
| Tolerance class | 2B | 2B | 2B | 1B ;2B ;2B +0.05 ;2B +0.10 ;2B +0.20 ;3B | 1B ;2B ;2B +0.05 ;2B +0.10 ;2B +0.20 ;3B | 1B ;2B ;2B +0.05 ;2B +0.10 ;2B +0.20 ;3B |
| Shank ⌀ Ds | 7 | 7 | 4.5 | 7 | 7 | 7 |