12D · Carbide Coolant-Thru Drill · ø20.00mm
ø20.00 mm 12D Solid Carbide
Coolant-Thru Drill
Designed for oil galleries, tie-rod holes, and structural deep-hole features in forged and cast components. The 12D ratio requires precise machine setup (low runout, rigid fixturing) but delivers repeatable hole straightness well beyond what conventional drills can achieve. Internal coolant is essential at this depth.
Get Pricing & Stock
Reference price
$1,084.91
Ref. factory price (USD)
Based on rod stock cost as of 2026-03-31. Final quotation may differ.
ø20.00mm 12D Coolant Drill
SKU: SCD-CTD-12D-D2000
✓ Factory direct pricing
✓ MOQ 1 piece, stock sizes ship 1–5 days
✓ Custom lengths & diameters available
Full Dimensions
Technical Specifications
| Cutter Diameter (D1 h7) | ø20.00 mm |
| Imperial Equivalent | 0.7874" |
| Flute Length (L2) | 258.00 mm |
| Shank Diameter (D2 h6) | ø20.00 mm |
| Overall Length (L1) | 310.00 mm |
| Depth Ratio | 12D (12× diameter) |
| Point Angle | 140° |
| Helix Angle | 30° |
| Number of Flutes | 2 |
| Coating | TiAlN / TiSiN Oerlikon Balzers BALINIT® |
| Substrate | K10/K20 Solid Carbide 10% Co binder |
| Coolant | Internal twin-channel |
| Tolerance | DIN 1414 · ISO 5419 |
| MOQ | 1 piece |
| Lead Time (standard) | 1–5 business days |
| Lead Time (custom) | 5–15 business days |
12D Dimensional Drawing
Where This Tool Excels
ø20.00mm 12D — recommended applications
- ▸ Pressure vessel nozzle holes
- ▸ Nuclear component drilling
- ▸ Large-bore crankshaft oil passages
- ▸ Ship engine block machining
Material Compatibility
Recommended Work Materials
12×D Extra-Deep Coolant-Thru Drill
Extra deep — oil passages, tie rods, cast and forged components
Same Diameter, Different Reach
ø20.00 mm Also Available In
Same Depth Ratio, Adjacent Sizes
Nearby 12D Diameters
Ready to Order ø20.00mm 12D Coolant Drills?
Factory direct. MOQ 1 piece. Tell us quantity and delivery date — we'll confirm lead time and pricing within 4 business hours.