Professional reviews from industry experts Drill America J Cobalt Heavy Duty Drill Bit (Pack of 12), D/ACO Series
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only with $48.81
| Material | Cobalt Steel |
| Cutting Diameter | 0.28 Inches |
| Finish Type | Gold Oxide |
| Shank Type | Round |
| Brand | Drill America |
- Cobalt steel tools are similar to high-speed steel, but with more cobalt for improved performance when cutting harder metals such as stainless steel or nickel alloys
- Gold oxide is a thinner oxide surface treatment than black oxide typically used to identify cobalt steel tools; performance is similar to uncoated tools
- Round shanks allow use with a wide variety of toolholding systems
- When run in a counterclockwise direction (right-hand cut) spiral fluted tools evacuate chips up and out of the cut to reduce clogging
- Manufactured to National Aerospace standard 907
From the manufacturer
 |  |  | |
|---|---|---|---|
| D/AN Drill America General Purpose Black Oxide Drill Bit | KFD Drill America Heavy Duty High Speed Steel Drill Bit | D/ACO Drill America Cobalt Drill Bit | |
| Material | High Speed Steel | High Speed Steel | Cobalt |
| Finish | Black Oxide | Black and Gold | Gold |
| Description | A dependable, general purpose drill designed to perform in a broad range of materials in the iron and steel families. Ideal for production, maintenance or portable drilling jobs. Surface treated with abrasion-resistant black oxide | Black and gold drills are manufactured from premium grade high speed steel for use in a wide range of materials. | Cobalt drills are effective in drilling tough, high tensile strength materials like stainless steel, inconel, and titanium. |
| Drill Point | 118 Conventional Point | 135 Split Point | 135 Split Point |
| For Use in: Wood, Iron and Steel | ✓ | ✓ | ✓ |
| For Use in Hard Metals Ex: Stainless Steel | Not Recommended | ✓ | ✓ |
D/ACO Drill America Cobalt Drill Bit
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|---|---|---|
Heavy Duty Cobalt SetsDrill America D/ACO Cobalt Drill Bits are available in drill sets from 3 - 115 pieces, sizes 1/16" - 1", A - Z and #1 - #60. | Gold Surface TreateedGold oxide is a thinner oxide surface treatment than black oxide typically used to identify cobalt steel tools; performance is similar to uncoated tools. | Heavy Duty Split Point TipDrill America D/ACO Cobalt Drills have a heavy duty 135 degree split point for self-centering and reducing thrust. |
Product Description
Drill America jobber length drill bit. Manufactured to National Aerospace standard 907. Made of heat resistant cobalt, they display higher red hardness which permits speeds upto 30 percent greater than High-Speed Steel drills and are especially effective in drilling tough, high tensile strength materials like PH stainless steel, inconel, and titanium.
Product Specifications
Specification for this product family
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