Spotting Drill Bits

Product Category

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Drill Bit Type

Aircraft bits have a higher diameter-to-length ratio than most drill bits, and can be long but narrow in diameter for hard-to-reach applications. Aircraft bits are often manufactured to meet aerospace standards.

Annular Cutters are hollow drill bits that cut only around the periphery of a hole. They reduce the torque and horsepower requirements for drilling because they remove less material than standard twist drill bits. Annular cutters produce accurate, burr-free holes without the need for pilot holes.

Gun Drill Bits are used to create deep holes. They are self-centering and sometimes use bearing pads to keep the drill bit centered in the hole. The cutting edges and flute design facilitate the evacuation of chips and the passage of coolant to the cutting edges.

Hole-Enlarging Drill Bits increase the size of an existing hole, and have no cutting points to start a hole. They are suitable for enlarging a hole up to twice its existing size.

Micro Drill Bits create very small or micro-sized holes. They are best used with high RPM, coolants to reduce friction and reduce heat, and a slow feed rate.

Reduced Shank Drill Bits (also called Silver & Deming or S&D) have shanks that are smaller than the drill diameter, so they create holes larger than the typical chuck capacity.

Spotting Drill Bits are commonly used to start holes in a hard material. This pilot hole is used to guide another size of drill bit into the material. This leads to more accurate hole placement. Choose a spotting drill angle that is larger than the primary drill bit. For example, when using a primary drill bit of 118 degrees, a 120-degree spotting drill bit angle provides the best result.

Step Drill Bits are usually tapered, with steps of varying diameters like a pyramid. The smallest diameter is at the tip and the largest is near the shank. These are for use on thin materials such as sheet metal. Some step drill bits create either a countersink or counterbore hole, eliminating a separate cutting operation.

Subland Drill Bits have two different cutting diameters on the same shank to create a countersink or counterbore hole, depending on the angle of the transition.

Taper Shank Drill Bits usually have a Morse taper shank which is tapered from one end to the other. The taper for the bit fits into the taper of the spindle. The friction between the surfaces provides a secure holding system and accurate placement of the tool. This eliminates the need for a chucking tool holder.

Threaded Shank Drill Bits can be screwed into a drill or drill attachments. This design is a chuck-less attachment that can decrease the overall length of the drill and drill bit so it can fit into confined spaces. Slippage with a chuck tool-holding mechanism is also eliminated.

Twist drill bits are end-cutting tools with two or more cutting edges and two or more flutes. The flutes brings chips up and away from the cutting edges and allows for coolant to reach the cutting edges. They are the most common type of drill bit.

Cutting Tools
- Drill Bits
  - Metalworking & Multipurpose Drill Bits
    - Spotting Drill Bits

Material Type

Carbide

Cobalt Steel

High Speed Steel (HSS)

Stainless Steel

Steel

Finish

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Gold Oxide
TiN
Uncoated (Bright)

System of Measurement

Inch

Metric

Cutter Size

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Diameter

Shank Type

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Shank Type

Annular Cutter shanks have two Weldon flats ground into the shank at a 90-degree angle. They are commonly used with magnetic-base drills.

Hex shanks have flats ground into the shank to resemble the shape of a hexagon. They can be gripped more firmly than a standard round shank bit, reducing slippage. This style works well with quick-change and standard chucks 1/4" and larger.

Morse Taper shanks are tapered from one end to another. They fit into tool holders with the same taper. They allow efficient transmission of torque to the drill bit and provide accurate, centered placement in the tool holder. A tang at the end of the taper is used to eject the drill bit by pushing a drift-pin into the slot, which pushes the shank down and out.

Round shanks are the most common drill bit shank. They are usually the same size as the drill bit cutting diameter. This style fits into the widest range of tool holders.

Round with Flats shanks are round with flats along the sides, starting at the tip. They are usually the same size as the drill bit cutting diameter. The flats help reduce slippage and provide a secure fit in the tool holder. This style fits most tool holders and gives a more secure hold than a shank without flats.

Round with Square End shanks have a round shank with a square end. They are usually the same size as the drill bit cutting diameter. The square ends help reduce slippage and provide a secure fit in the tool holder. This style fits into large ratchet drills and gives a more secure hold than a shank without flats.

Round with Tang shanks have a round shank with a tang ground into the end of the shank. They are usually the same size as the drill bit cutting diameter. The tang helps reduce slippage and provides a secure fit in the tool holder. The tang at the end of the shank is used to eject the drill bit by pushing a drift-pin into the slot, which pushes the shank down and out.

Threaded shanks have threads on the opposite end of the drill from the cutting edges. These can be quickly threaded into drills or drill attachments. They are generally used in close center multiple spindle applications or portable angle drilling tools. The threads provide a secure fit in the tool holder. Some threaded bits adhere to NAS 965 standards used in the aerospace industry.

Weldon shanks have one or two flats ground into a portion of the sides and are commonly used in a tool holder with a set screw. This provides a secure hold in the tool holder and helps prevent slippage.

Whistle Notch shanks have a flat ground into the sides with a slight taper toward the end of the shank. The notch prevents axial forces from pushing the tool into the tool holder under high pressure.

Point Angle

118 Degrees
120 Degrees
60 Degrees
90 Degrees

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Showing 267 results in 173 families

Magafor 0895 Series Cobalt Steel Titanium Nitride (TiN) Combination Spotting Drill and Countersink Bit, 2 Flute, 90 Degrees Cutting Angle, 0.157" Cutting Length

Magafor 0895 Series Cobalt Steel Titanium Nitride (TiN) Combination Spotting Drill and Countersink Bit, 2 Flute, 90 Degrees Cutting Angle, 0.125" Cutting Length

Magafor 0895 Series Cobalt Steel Titanium Nitride (TiN) Combination Spotting Drill and Countersink Bit, 2 Flute, 90 Degrees Cutting Angle, 0.1875" Cutting Length

Magafor 0895 Series Cobalt Steel Titanium Nitride (TiN) Combination Spotting Drill and Countersink Bit, 2 Flute, 90 Degrees Cutting Angle, 0.375" Cutting Length

Magafor 0895 Series Cobalt Steel Titanium Nitride (TiN) Combination Spotting Drill and Countersink Bit, 2 Flute, 90 Degrees Cutting Angle, 0.315" Cutting Length

Magafor 0895 Series Cobalt Steel Titanium Nitride (TiN) Combination Spotting Drill and Countersink Bit, 2 Flute, 90 Degrees Cutting Angle, 0.236" Cutting Length

Magafor 0895 Series Cobalt Steel Titanium Nitride (TiN) Combination Spotting Drill and Countersink Bit, 2 Flute, 90 Degrees Cutting Angle, 0.5" Cutting Length

Magafor 0895 Series Cobalt Steel Titanium Nitride (TiN) Combination Spotting Drill and Countersink Bit, 2 Flute, 90 Degrees Cutting Angle, 1" Cutting Length

Magafor 0895 Series Cobalt Steel Titanium Nitride (TiN) Combination Spotting Drill and Countersink Bit, 2 Flute, 90 Degrees Cutting Angle, 0.472" Cutting Length

Magafor 0895 Series Cobalt Steel Titanium Nitride (TiN) Combination Spotting Drill and Countersink Bit, 2 Flute, 90 Degrees Cutting Angle, 0.197" Cutting Length

Magafor 0895 Series Cobalt Steel Titanium Nitride (TiN) Combination Spotting Drill and Countersink Bit, 2 Flute, 90 Degrees Cutting Angle, 0.625" Cutting Length

Magafor 0895 Series Cobalt Steel Titanium Nitride (TiN) Combination Spotting Drill and Countersink Bit, 2 Flute, 90 Degrees Cutting Angle, 0.630" Cutting Length

Magafor 0895 Series Cobalt Steel Titanium Nitride (TiN) Combination Spotting Drill and Countersink Bit, 2 Flute, 90 Degrees Cutting Angle, 0.709" Cutting Length

Magafor 0895 Series Cobalt Steel Titanium Nitride (TiN) Combination Spotting Drill and Countersink Bit, 2 Flute, 90 Degrees Cutting Angle, 0.75" Cutting Length

Magafor 0895 Series Cobalt Steel Titanium Nitride (TiN) Combination Spotting Drill and Countersink Bit, 2 Flute, 90 Degrees Cutting Angle, 0.787" Cutting Length

Magafor 0895 Series Cobalt Steel Titanium Nitride (TiN) Combination Spotting Drill and Countersink Bit, 2 Flute, 90 Degrees Cutting Angle, 0.984" Cutting Length

Magafor 0896 Series Cobalt Steel Titanium Nitride (TiN) Combination Spotting Drill and Countersink Bit, 2 Flute, 120 Degrees Cutting Angle, 0.625" Cutting Length

Magafor 0896 Series Cobalt Steel Titanium Nitride (TiN) Combination Spotting Drill and Countersink Bit, 2 Flute, 120 Degrees Cutting Angle, 0.472" Cutting Length

Magafor 0896 Series Cobalt Steel Titanium Nitride (TiN) Combination Spotting Drill and Countersink Bit, 2 Flute, 120 Degrees Cutting Angle, 0.078" Cutting Length

Magafor 0896 Series Cobalt Steel Titanium Nitride (TiN) Combination Spotting Drill and Countersink Bit, 2 Flute, 120 Degrees Cutting Angle, 0.118" Cutting Length