References
Dormer:E6541/4
Rubix:376A2286
EAN:7320760339008
Technical specifications
| Threading | 1/4-28 unf |
|---|---|
| Type | american through-bores |
| With cooling spray | no |
Product details : DORMER E6541/4 5978407
HSS combination drill-tap for UNF thread steam-relieved form C 30° spiralized 1.5xD through holes for general use in steel <850 N/mm². Cast iron. Copper and brass. Aluminium alloys Si <0.5% and thermoplastics.
Applications
• Free-cutting steel / mild steel (<120 HB <400 N/mm²)
• Structural steel / case-hardening steel (<200 HB <700 N/mm²)
• Carbon steel (<250 HB <850 N/mm²)
• Alloy steel (<250 HB <850 N/mm²)
• Cast iron - lamellar (>150<300 HB >500<1000 N/mm²)
• Beta brass, bronze (<200 HB <700 N/mm²)
• Alpha brass (<200 HB <700 N/mm²)
• Aluminium magnesium unalloyed (<100 HB <350 N/mm²)
• Aluminium alloyed (Silicon 0.5%) (<150 HB <500 N/mm²)
• Plastics - Thermoplastics
• Structural steel / case-hardening steel (<200 HB <700 N/mm²)
• Carbon steel (<250 HB <850 N/mm²)
• Alloy steel (<250 HB <850 N/mm²)
• Cast iron - lamellar (>150<300 HB >500<1000 N/mm²)
• Beta brass, bronze (<200 HB <700 N/mm²)
• Alpha brass (<200 HB <700 N/mm²)
• Aluminium magnesium unalloyed (<100 HB <350 N/mm²)
• Aluminium alloyed (Silicon 0.5%) (<150 HB <500 N/mm²)
• Plastics - Thermoplastics
Technical specifications
Attributes
| Threading | 1/4-28 unf |
|---|---|
| Type | american through-bores |
| With cooling spray | no |
| Direction of threading | right |
| Drilling diameter | 5.5 mm |
| Tail diameter | 5 mm |
| Square drive adapter | 6.3 mm |
| Thread depth | 19 mm |
| Angle of helix | 30 ° |
| Total length | 83 mm |
| Body material | hss |
| No. of threads per inch | 28 |
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£ 24.91 excl. VAT
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£ 29.89 incl. VAT
- Usually arrives within 14 working days