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Dormer 1/4 - 28UNF HSS-E-PM Machine Tap - E033
Order Code
TDG-01502H
£34.09 £28.41
Incl. VAT Ex. VAT
Dormer 1/4 - 28UNF HSS-E-PM Machine Tap - E033 is only available to buy in quantities of 1
Product Information
Spiral flute machine tap with chamfer form C with a 2 - 3 x P semi-bottoming lead, for Unified National Fine thread UNF 1/4in with 28 TPI and 2B class of fit, dimensions according to ISO 529 standard with 6.3mm shank and 5mm square drive, powder metallurgical HSS-E with uncoated surface finish and 45° helix angle for 2.5 x D blind hole threading in general purpose applications.
Technical Specification
| Brand | Dormer |
|---|---|
| Manufacturer Part Number | E0331/4 |
| Size (in) | 1/4 - 28 |
| Features & Benefits | • E033 series • Thread form, unified fine • Meets ISO 529 standards • Internal inch thread medium class of fit • Blind hole application • 2.5 x D usable tool depth to diameter ratio • Semi-bottoming tap chamfer (2 - 3 pitch lead) • Spiral flute geometry • 45° helix angle (flute) • Right hand rotation/cutting |
| Diameter (in) | 1/4 |
| Diameter (mm) | 6.35 |
| Thread Size x Pitch | 1/4 - 28 |
| Drill Diameter (mm) | 5.50 |
| Overall Length (in) | 2.5984 |
| Overall Length (mm) | 66 |
| Flute Length (mm) | 10 |
| Flute Type | Spiral Flute |
| Type | Machine Tap |
| Square Size (mm) | 5.00 |
| Application | Various |
| Pitch | 28 |
| Teeth per Inch | 28 |
| Threads Per Inch | 28 |
| Number of Flutes | 3 |
| Thread Type | UNF |
| Material | HSS-E-PM |
| Coating/Finish | Bright Blue Ring |
| Tap Drill Size (mm) | 5.50 |
| Thread Length (mm) | 10.00 |
| Thread Diameter (in) | 1/4 |
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