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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About Drill Bits
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Drill Bit Sets
These jobbers'-length bits have the rigidity and length required for most applications.
Titanium-nitride (TiN) coated drill bits last longer and can drill at higher speeds than uncoated and oxide-coated drill bits.
Drill bits with a split point keep centered without a pilot hole.
| No. of Pieces | Drill Bit Sizes Included | Point Style | Specifications Met | For Use On | Each | |
Metric | ||||||
|---|---|---|---|---|---|---|
Titanium-Nitride (TiN) Coated High-Speed Steel | ||||||
| 11 | 1.0-6.0 mm (increments of 0.5 mm) | Split | NAS907 Type B | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 000000000 | 0000000 |
Quick-Change Combination Countersinking Drill and Screwdriver Bit Sets
Fasten differently sized screws with these sets. They save you the effort of switching three separate bits in and out of a power tool, instead letting you flip between a countersinking drill and a screwdriver bit with a single hand. You can also attach your own countersinking drills and screwdriver bits as long as they have a 1/4” hex shank.
Countersinking drills have an 82° angle, allowing inch-sized flat- and oval-head screws to sit flush with the surface.
| No. of Pieces | Includes | Countersink Angle  | Countersink Body Dia. | No. of Countersink Flutes | Adapter Hex Shank Size | For Use On | Each | |
Black-Oxide High-Speed Steel Countersink | ||||||||
|---|---|---|---|---|---|---|---|---|
| 11 | 1 Drill-Bit Countersink for 3/32" Drill Bit 1 Drill-Bit Countersink for 7/64" Drill Bit 1 Drill Bit (3/32" Drill Bit Size) 2 Drill Bits (7/64" Drill Bit Size) 1 Phillips No. 1 Screwdriver Bit (1" O'all Lg.) 2 Phillips No. 2 Screwdriver Bits (1" O'all Lg.) 1 Reversible Shaft 1 Adapter 1 Hex L-Key | 82° | 3/8" | 4 | 5/16" | Aluminum, Fiberglass, Plastic, Wood | 0000000 | 000000 |
Bit Assortments
These assortments contain general-purpose bits.
Hex shank bits (also known as insert bits) are used in hand drivers or with a bit adapter in power tools.
| No. of Pieces | Components Included | Bits Included | Adapters Included | Each | |
1/4" Hex Shank Size—Steel | |||||
|---|---|---|---|---|---|
| 11 | 10 Bits 1 Adapter | Phillips: No. 0, No. 1, No. 2, No. 3 (1" O'all Lg.) Slotted: 7/32", 1/4", 5/16" (1" O'all Lg.) Torx: T10, T15, T20 (1" O'all Lg.) | 2 3/8" Lg. Bit Adapter for Power Tools | 0000000 | 000000 |