(DV303) HSS-EX, Centre Drill / Form A (60°)
Form A 60° Centre Drill
- SKU
- DV303008
Key features
- HSS-EX Form A centre drill with 60° geometry
- Bright finish
- Selected drill diameters from 0.8 mm to 5.0 mm
Made in South Korea
Accurate centring
Form A 60° geometry creates centre holes for subsequent drilling and machining operations.
Practical size range
Selected options cover 0.8 mm to 5.0 mm drill diameters for common centring requirements.
Matched proportions
Pilot, shank and overall lengths are specified for each diameter option.
| SKU | Drill Diameter (mm) | Overall length (mm) | Shank dia. (mm) | Flute length (mm) | Stock | Price | Qty | Add |
|---|---|---|---|---|---|---|---|---|
| DV303008 | 0.8 | 25.0 | 3.15 | 1.1 | In stock | $13.70 | ||
| DV303010 | 1.0 | 31.5 | 3.15 | 1.3 | In stock | $9.60 | ||
| DV303912 | 1.25 | 31.5 | 3.15 | 1.6 | In stock | $10.40 | ||
| DV303016 | 1.6 | 35.5 | 4.0 | 2.0 | In stock | $10.80 | ||
| DV303020 | 2.0 | 40.0 | 5.0 | 2.5 | In stock | $12.20 | ||
| DV303025 | 2.5 | 45.0 | 6.3 | 3.1 | Restocking | $13.70 | ||
| DV303931 | 3.15 | 50.0 | 8.0 | 3.9 | In stock | $17.00 | ||
| DV303040 | 4.0 | 56.0 | 10.0 | 5.0 | In stock | $17.00 | ||
| DV303050 | 5.0 | 63.0 | 12.5 | 6.3 | 1-2 Weeks | $19.20 | ||
| DV303063 | 6.3 | 71.0 | 16.0 | 8.0 | In stock | $34.20 |
Add (DV303) HSS-EX, Centre Drill / Form A (60°) to comparison
View Comparison- Overview
- Specifications
- Work Material
- Reviews
YG-1 DV303 HSS-EX Centre Drill Form A is a bright-finish 60° centring drill. It is intended for creating 60° centre holes before subsequent drilling or machining operations. The listed range covers drill diameters from 0.8 mm to 5.0 mm. Shank diameters progress from 3.15 mm to 12.5 mm across the selected options.
Pilot lengths range from 1.1 mm to 6.3 mm, matched to diameter. Overall tool lengths span 25 mm to 63 mm for practical machine setup. The Form A geometry provides the defined 60° centre-drilling profile. Choose the required diameter to suit the centre size specified by your operation.
- HSS-EX Form A centre drill with 60° geometry
- Bright finish
- Selected drill diameters from 0.8 mm to 5.0 mm
- Plain shank sizes from 3.15 mm to 12.5 mm
- Pilot lengths from 1.1 mm to 6.3 mm
- Overall lengths from 25 mm to 63 mm
No specifications available.
Work materials
VDI 3323 recommendations for this tool.
Steel
5 gradesCast iron
4 gradesStainless steel
1 gradeVDI grade reference10 grades
Individual grade ratings and nominal hardness references. Base grades and decimal subgrades are listed separately.
| VDI | Work material | Recommendation | HB ref. | HRC ref. |
|---|---|---|---|---|
| 1 | PNon-alloy steel | Excellent | 125 | - |
| 2 | PNon-alloy steel | Excellent | 190 | 13 |
| 3 | PNon-alloy steel | Good | 250 | 25 |
| 6 | PLow-alloy steel | Excellent | 180 | 10 |
| 7 | PLow-alloy steel | Good | 275 | 29 |
| 12 | MStainless steel | Good | 200 | 15 |
| 15 | KGrey cast iron | Excellent | 180 | 10 |
| 16 | KGrey cast iron | Good | 260 | 26 |
| 17 | KNodular cast iron | Good | 160 | 3 |
| 19 | KMalleable cast iron | Good | 130 | - |
No grades match your search.
HB and HRC values are nominal catalogue references. Grade subdivisions can vary between catalogues.
Recommendations apply to the listed VDI grades. Unlisted grades have no stated recommendation.
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