Finish Finish |
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Material Material |
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Point Angle Point Angle |
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Individual/Set Individual/Set |
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Shank Size Shank Size |
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Overall Length Overall Length | Show |
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Overall Length Overall Length | Hide |
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Drill Bit Size Drill Bit Size |
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Maximum Hole Drilling Depth Maximum Hole Drilling Depth |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Number of Flutes Number of Flutes |
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 | 2 |
Diameter Rating Diameter Rating |
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Step Diameter Step Diameter |
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Number of Countersinking Ends Number ofCountersinking Ends |
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Step Length Step Length |
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About Drill Bits
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Drill Bit Decimal Size Equivalents
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About Countersinks
Countersinks cut a cone-shaped opening to install screws and rivets flush with a surface or hold workpieces between centers on a lathe. They can also be used for chamfering and deburring.
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Drill-Bit Countersinks with Drill Bit
These countersinks come attached to a high-speed steel jobbers’ bit for drilling and countersinking at the same time. They have a hex shank that fits in all quick-change and standard drill chucks. The bit is held in place with a set screw and can be adjusted up to 1” for different screw lengths. The 82° countersink angle is compatible with the profile of flat- and oval-head inch screws.
For technical drawings and 3-D models, click on a part number.
Countersinks | |||||||||||
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For Screw Size | Replacement Drill Bits | ||||||||||
| Hard Wood | Soft Wood | Drill Bit Size | Body Dia. | Shank Size | Overall Lg. | Max. Hole Drilling Dp. | For Use On | Each | Each | ||
Uncoated High-Speed Steel | |||||||||||
2 Flute | |||||||||||
| No. 6 | No. 8 | 7/64" | 1/2" | 1/4" | 2 13/16" | 1" | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel, Wood | 0000000 | 00000 | 0000000 | 00000 |
Long-Life Counterboring Drill Bits
Also known as subland drill bits, these last longer than standard counterboring drill bits because the diameter stays the same after sharpening. They drill and counterbore at the same time. After drilling and counterboring, tap the hole and install your fastener.
For technical drawings and 3-D models, click on a part number.
Dia. | Lg. | ||||||||
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| For Screw Size | Body | Step | Step | Overall | Number of Flutes | Point Angle | For Use On | Each | |
Uncoated High-Speed Steel | |||||||||
| No. 10 | 0.313" | 0.190" | 1/2" | 2 13/16" | 2 | 118° | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 00000000 | 000000 |