Drilling
Difficult holes made easy.
Flat-bottom drills for counterbores, angled surfaces, crossholes, and partial holes.
300,000
holes per tool (reported)
96 IPM
3/8" in aluminum (10K RPM)
10×
tool-life improvement
The FBD flat-bottom drill is the answer to the holes that make ordinary drills walk, deflect, or burr: counterbores, flat floors, drilling into curved or angled surfaces, partial holes, and breakthroughs into crossholes.
Two-flute solid carbide, available solid or thru-coolant, with optional DLC — built to put a clean flat floor where a standard drill leaves an angle.
Why it wins
- Flat floors and clean counterbores in one operation.
- Drills curved and angled surfaces without walking.
- Burr-free breakthrough into crossholes and partial holes.
- Two-flute solid carbide; solid or thru-coolant; optional DLC.
Best for
Aluminum & A286AerospaceCounterboresAngled & partial holes
45+ flat-bottom drills — start here
See all in the Tool Finder →- FBD-201-04Solid Carbide Flat Bottom Drill, 0.1250in Diam, 2 Flute, 0.375in Flute Length, 0.125in Shank,1.500in OAL, 0.2500in Max Hole Depth, 0.005in Radius, Tuffy Material
- FBD-201-04-TCSolid Carbide Flat Bottom Drill, 0.1250in Diam, 2 Flute, 0.375in Flute Length, 0.125in Shank,1.500in OAL, 0.2500in Max Hole Depth, 0.005in Radius, Tuffy Material, Thru Coolant
- FBD-201-06Solid Carbide Flat Bottom Drill, 0.1875in Diam, 2 Flute, 0.563in Flute Length, 0.188in Shank,2.500in OAL, 0.3750in Max Hole Depth, 0.010in Radius, Tuffy Material
- FBD-201-06-TCSolid Carbide Flat Bottom Drill, 0.1875in Diam, 2 Flute, 0.563in Flute Length, 0.188in Shank,2.500in OAL, 0.3750in Max Hole Depth, 0.010in Radius, Tuffy Material, Thru Coolant
- FBD-201-08Solid Carbide Flat Bottom Drill, 0.2500in Diam, 2 Flute, 0.750in Flute Length, 0.250in Shank,2.500in OAL, 0.5000in Max Hole Depth, 0.010in Radius, Tuffy Material
- FBD-201-08-TCSolid Carbide Flat Bottom Drill, 0.2500in Diam, 2 Flute, 0.750in Flute Length, 0.250in Shank,2.500in OAL, 0.5000in Max Hole Depth, 0.010in Radius, Tuffy Material, Thru Coolant
- FBD-201-10Solid Carbide Flat Bottom Drill, 0.3125in Diam, 2 Flute, 0.938in Flute Length, 0.313in Shank,2.500in OAL, 0.6250in Max Hole Depth, 0.020in Radius, Tuffy Material
- FBD-201-10-TCSolid Carbide Flat Bottom Drill, 0.3125in Diam, 2 Flute, 0.938in Flute Length, 0.313in Shank,2.500in OAL, 0.6250in Max Hole Depth, 0.020in Radius, Tuffy Material, Thru Coolant
- FBD-201-12Solid Carbide Flat Bottom Drill, 0.3750in Diam, 2 Flute, 1.125in Flute Length, 0.375in Shank,3.000in OAL, 0.7500in Max Hole Depth, 0.020in Radius, Tuffy Material
- FBD-201-12-TCSolid Carbide Flat Bottom Drill, 0.3750in Diam, 2 Flute, 1.125in Flute Length, 0.375in Shank,3.000in OAL, 0.7500in Max Hole Depth, 0.020in Radius, Tuffy Material, Thru Coolant
- FBD-201-16Solid Carbide Flat Bottom Drill, 0.5000in Diam, 2 Flute, 1.500in Flute Length, 0.500in Shank,3.500in OAL, 1.0000in Max Hole Depth, 0.020in Radius, Tuffy Material
- FBD-201-16-TCSolid Carbide Flat Bottom Drill, 0.5000in Diam, 2 Flute, 1.500in Flute Length, 0.500in Shank,3.500in OAL, 1.0000in Max Hole Depth, 0.020in Radius, Tuffy Material, Thru Coolant
- FBD-202-04Solid Carbide Flat Bottom Drill, 0.1250in Diam, 2 Flute, 0.750in Flute Length, 0.125in Shank,2.000in OAL, 0.6250in Max Hole Depth, 0.005in Radius, Tuffy Material
- FBD-202-04-TCSolid Carbide Flat Bottom Drill, 0.1250in Diam, 2 Flute, 0.750in Flute Length, 0.125in Shank,2.000in OAL, 0.6250in Max Hole Depth, 0.005in Radius, Tuffy Material, Thru coolant
- FBD-202-06Solid Carbide Flat Bottom Drill, 0.1875in Diam, 2 Flute, 1.125in Flute Length, 0.188in Shank,2.500in OAL, 0.9375in Max Hole Depth, 0.010in Radius, Tuffy Material
- FBD-202-06-TCSolid Carbide Flat Bottom Drill, 0.1875in Diam, 2 Flute, 1.125in Flute Length, 0.188in Shank,2.500in OAL, 0.9375in Max Hole Depth, 0.010in Radius, Tuffy Material, Thru coolant
- FBD-202-08Solid Carbide Flat Bottom Drill, 0.2500in Diam, 2 Flute, 1.500in Flute Length, 0.250in Shank,3.000in OAL, 1.2500in Max Hole Depth, 0.010in Radius, Tuffy Material
- FBD-202-08-TCSolid Carbide Flat Bottom Drill, 0.2500in Diam, 2 Flute, 1.500in Flute Length, 0.250in Shank,3.000in OAL, 1.2500in Max Hole Depth, 0.010in Radius, Tuffy Material, Thru coolant
- FBD-202-10Solid Carbide Flat Bottom Drill, 0.3125in Diam, 2 Flute, 1.875in Flute Length, 0.313in Shank,3.500in OAL, 1.5625in Max Hole Depth, 0.020in Radius, Tuffy Material
- FBD-202-10-TCSolid Carbide Flat Bottom Drill, 0.3125in Diam, 2 Flute, 1.875in Flute Length, 0.313in Shank,3.500in OAL, 1.5625in Max Hole Depth, 0.020in Radius, Tuffy Material, Thru coolant
- FBD-202-12Solid Carbide Flat Bottom Drill, 0.3750in Diam, 2 Flute, 2.250in Flute Length, 0.375in Shank,4.000in OAL, 1.8750in Max Hole Depth, 0.020in Radius, Tuffy Material
- FBD-202-12-TCSolid Carbide Flat Bottom Drill, 0.3750in Diam, 2 Flute, 2.250in Flute Length, 0.375in Shank,4.000in OAL, 1.8750in Max Hole Depth, 0.020in Radius, Tuffy Material, Thru coolant
- FBD-202-16Solid Carbide Flat Bottom Drill, 0.5000in Diam, 2 Flute, 3.000in Flute Length, 0.500in Shank,5.000in OAL, 2.5000in Max Hole Depth, 0.020in Radius, Tuffy Material
- FBD-202-16-TCSolid Carbide Flat Bottom Drill, 0.5000in Diam, 2 Flute, 3.000in Flute Length, 0.500in Shank,5.000in OAL, 2.5000in Max Hole Depth, 0.020in Radius, Tuffy Material, Thru coolant
Put a RobbJack flat-bottom drill to work.
Browse the line in the Tool Finder, or let our engineers spec it for your part.