Hole Saw Pilots for Enlarging Holes


Easily enlarge an existing hole by giving your hole saw a stable, centered base. These pilots turn the smaller hole saw you used to make the original hole into an anchor for your larger hole saw. First, attach the larger hole saw to your arbor. Then replace your arbor’s pilot drill bit with the pilot. The smaller hole saw threads onto the pilot upside down, so the teeth face away from the material being cut. When you start to cut the larger hole, the smaller hole saw will slip into the existing hole and keep your arbor and larger hole saw aligned.
These pilots fit all brands of threaded hole saws.
Thread adapter is required for use on 1 1/8" diameter and larger hole saws to adapt 1/2"-20 threads to 5/8"-18 threads.
For technical drawings and 3-D models, click on a part number.
Hole Saw Kits

Cut perfectly round holes in a variety of diameters. With variable-set teeth, the saws make quick cuts through wood, sheet metal, and other materials with minimal vibration. Also known as bimetal hole saws, they have high-speed steel teeth and a steel body. Often used to remove more material than drill bits, these saws are helpful for jobs such as creating cutouts for doorknobs or cables. Attach them to a drill or drill press with the included arbors.
For technical drawings and 3-D models, click on a part number.
Material | |||||||
---|---|---|---|---|---|---|---|
No. of Saws | Dia. | Cutting Dp. | Body | Tooth | Includes | Each | |
For Use On Aluminum, Brass, Bronze, Stainless Steel, Steel, Wood | |||||||
5 | 7/8", 1", 1 1/8", 1 1/4", 1 1/2" | 1 15/16" | Steel | High-Speed Steel | 1/4" Hex-Shank Arbor with 1/4" Dia. High-Speed Steel Pilot Drill 7/16" Hex-Shank Arbor with 1/4" Dia. High-Speed Steel Pilot Drill 1/2"-20 to 5/8"-18 Arbor Thread Adapter Plastic Case | 0000000 | 000000 |
9 | 3/4", 7/8", 1 1/8", 1 3/8", 1 1/2", 1 3/4", 2", 2 1/4", 2 1/2" | 1 15/16" | Steel | High-Speed Steel | 1/4" Hex-Shank Arbor with 1/4" Dia. High-Speed Steel Pilot Drill 7/16" Hex-Shank Arbor with 1/4" Dia. High-Speed Steel Pilot Drill 1/2"-20 to 5/8"-18 Arbor Thread Adapter One Extra 1/4" Dia. High-Speed Steel Pilot Drill Plastic Case | 0000000 | 000000 |
Hole Saw Arbors with Pilot Drill Bit

Pilot
Drill Bit


Secure your hole saw to a drill or drill press with these arbors. An included pilot drill bit centers your cut and guides the saw. These arbors fit all brands of threaded hole saws.
Arbors with retractable locking pins detach quickly—just pull back the collar and unthread your hole saw.
Long-life pilot drill bits are carbide tipped, so they last up to twice as long as high-speed steel.
Arbor thread adapters let you use arbors with 1/2"-20 threads with hole saws that have 5/8"-18 threads.
For technical drawings and 3-D models, click on a part number.
Arbors with Pilot Drill Bit | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Pilot Drill Bit | Set Screw Drive | Replacement Pilot Drill Bits | Long-Life Pilot Drill Bits | |||||||||||
Shank Size | For Arbor Hole Size | For Hole Saw Dia. | Dia. | Lg. | Material | Size | Style | Features | Each | Each | Each | |||
1/4" | 1/2"-20 | 9/16"-1 3/16" (14 mm-30 mm) | 1/4" | 3 1/16" | High-Speed Steel | 5mm | Hex | __ | 0000000 | 00000 | 0000000 | 00000 | 00000000 | 00000 |
1/4" | 1/2"-20 | 9/16"-1 3/16" (14 mm-30 mm) | 1/4" | 3 5/8" | High-Speed Steel | 4mm | Hex | __ | 00000000 | 00000 | 00000000 | 0000 | 000000 | 00 |
11/32" | 1/2"-20 | 9/16"-1 3/16" (14 mm-30 mm) | 1/4" | 3 1/8" | High-Speed Steel | __ | Slotted | __ | 00000000 | 00000 | 00000000 | 0000 | 000000 | 00 |
11/32" | 1/2"-20 | 9/16"-1 3/16" (14 mm-30 mm) | 1/4" | 3 5/8" | High-Speed Steel | __ | Slotted | __ | 00000000 | 00000 | 00000000 | 0000 | 000000 | 00 |
11/32" | 5/8"-18 | 1 1/4"-8 9/32" (32 mm-210 mm) | 1/4" | 3 5/8" | High-Speed Steel | __ | Slotted | __ | 00000000 | 00000 | 00000000 | 0000 | 000000 | 00 |
3/8" | 1/2"-20 | 9/16"-1 3/16" (14 mm-30 mm) | 1/4" | 3 1/16" | High-Speed Steel | 5mm | Hex | __ | 0000000 | 0000 | 0000000 | 0000 | 00000000 | 0000 |
3/8" | 5/8"-18 | 1 1/4"-6 5/8" (32 mm-168 mm) | 1/4" | 3 1/16" | High-Speed Steel | 5mm | Hex | Retractable Locking Pins | 0000000 | 00000 | 0000000 | 0000 | 00000000 | 0000 |
7/16" | 1/2"-20 | 9/16"-1 3/16" (14 mm-30 mm) | 1/4" | 4 5/16" | High-Speed Steel | 1/8" | Hex | __ | 0000000 | 00000 | 0000000 | 0000 | 00000000 | 0000 |
7/16" | 5/8"-18 | 1 1/4"-6 5/8" (32 mm-168 mm) | 1/4" | 3 1/16" | High-Speed Steel | 5mm | Hex | Retractable Locking Pins | 0000000 | 00000 | 0000000 | 0000 | 00000000 | 0000 |