HSS Cobalt Drill Bit 1/2-inch Parallel
HSS cobalt drill bits with 1/2-inch parallel shank combine the heat resistance of cobalt steel with the secure gripping of a 12.7mm parallel shank for heavy-duty drilling applications. The HSS-Co material maintains cutting hardness at elevated temperatures, making these bits ideal for drilling hardened steels, stainless steel, and high-temperature alloys in demanding workshop environments. The 135° split point ensures positive starting without walking, while the larger shank diameter prevents slippage in standard drill chucks under high torque.
HSS Cobalt Drill Bit 1/2-inch Parallel Shank Technical Data
| Specification | Details |
|---|---|
| Material | HSS-Co (High-Speed Steel + 5% Cobalt) |
| Shank Type | Parallel (Straight) Shank |
| Shank Diameter | 1/2-inch (12.7mm) |
| Standard | DIN 338 |
| Point Angle | 135° Split Point |
| Hardness | HRC 65-67 |
| Application | Hardened Steels, Stainless Steel, Titanium, Inconel |
HSS Cobalt Drill Bit 1/2-inch Parallel Shank Size Chart
| Diameter (mm) | Flute Length (mm) | Overall Length (mm) | Shank Dia (in) |
|---|---|---|---|
| 13.00 | 75 | 150 | 1/2 inch |
| 14.00 | 75 | 150 | 1/2 inch |
| 15.00 | 75 | 150 | 1/2 inch |
| 16.00 | 75 | 150 | 1/2 inch |
| 17.00 | 75 | 150 | 1/2 inch |
| 18.00 | 75 | 150 | 1/2 inch |
| 19.00 | 75 | 150 | 1/2 inch |
| 20.00 | 75 | 150 | 1/2 inch |
HSS Cobalt Drilling Tools with 1/2-inch Parallel Shank
HSS cobalt drill bits with 1/2-inch parallel shank deliver the combined benefits of cobalt-enhanced cutting performance and secure shank gripping for heavy-duty industrial drilling. The 12.7mm parallel shank provides maximum contact area within standard drill chucks, preventing slippage during high-torque operations on tough materials. This configuration is particularly valuable in shipbuilding, structural steel fabrication, and heavy equipment maintenance where larger cobalt bits must drill reliably through stainless steel and alloy steels.
The 5% cobalt content enables these bits to maintain cutting edge hardness at temperatures exceeding 600°C, significantly outlasting standard HSS bits in demanding applications. Precision-ground flutes and a 135° split point geometry ensure efficient chip evacuation and self-centering starts for accurate hole placement.
For Morse taper mounting in drill presses and lathes, see our HSS Cobalt Taper Shank Drilling Tools for self-locking heavy-duty drive applications.
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