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Dormer 1/4 - 28UNF HSS-E-PM Machine Tap - E031
Order Code
TDG-01302D
£30.98 £25.82
Incl. VAT Ex. VAT
Dormer 1/4 - 28UNF HSS-E-PM Machine Tap - E031 is only available to buy in quantities of 1
Product Information
Spiral point machine tap with chamfer form B with a 3.5 - 5 x P plug 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 for 2.5 x D through hole threading in general purpose applications.
Technical Specification
| Brand | Dormer |
|---|---|
| Manufacturer Part Number | E0311/4 |
| Size (in) | 1/4 - 28 |
| Features & Benefits | • E031 series • Thread form, unified fine • Meets ISO 529 standards • Internal inch thread medium class of fit • Through hole application • 2.5 x D usable tool depth to diameter ratio • Plug tap chamfer (3.5 - 5 pitch lead) • Spiral point geometry • 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) | 13 |
| Flute Type | Spiral Point |
| 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) | 13.00 |
| Thread Diameter (in) | 1/4 |
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