Conduit Reamers | McMaster-Carr

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For Deburring

For Use On

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For EMT Conduit Trade Size

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13 Products

Reamers for Deburring

Smooth the inside and edges of holes with these reamers. Often used to finish holes in sheet metal or to remove burrs from the ends of cut pipe and conduit, they're also known as repairmen's reamers.

Round Shank

Spiral Flute

These reamers fit in the chuck of drill presses, turret lathes, and other machine and power tools, making them the most common shank type.

Spiral Flute—Since these reamers clear chips better than straight flutes, they leave holes with a smoother finish. They're better for holes with breaks in the surface, such as a keyway, because they cut continuously across the breaks instead of moving in and out.

High-Speed Steel—Durable and wear resistant, these are good for general purpose reaming in most materials.

Left-Hand Spiral—These reamers push chips downward as they cut, so they're often used in through holes.

				Lg.
	For Pipe Size	Reamer Dia. (B to A)	Material	Flute	Overall	No. of Flutes	Spiral Direction	Cutting Dia. Tolerance	For Deburring	For Use On		Each
Spiral Flute







				Inch

				1/8 to 1	0.1875" to 1.2500" (3/16" to 1 1/4")	High-Speed Steel	3 1/32"	5 3/64"	10	Left Hand	-0.003" to 0.003"	Inner Pipe Edges, Inner Tube Edges, Inner Conduit Edges, Sheet Edges	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	3017A11	0000000


				1/4 to 1 1/4	0.2500" to 1.4688" (1/4" to 1 15/32")	High-Speed Steel	3"	5"	10	Left Hand	-0.003" to 0.003"	Inner Pipe Edges, Inner Tube Edges, Inner Conduit Edges, Sheet Edges	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	3017A12	000000
				1/4 to 2	0.2500" to 2.2656" (1/4" to 2 17/64")	High-Speed Steel	3 7/8"	5 7/8"	12	Left Hand	-0.003" to 0.003"	Inner Pipe Edges, Inner Tube Edges, Inner Conduit Edges, Sheet Edges	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	3017A13	000000

T-Handle Shank

Spiral Flute

No additional tools required, these reamers have an integrated handle that's easy to grip and turn.

High-Speed Steel—Durable and wear resistant, these are good for general purpose reaming in most materials.

Left-Hand Spiral—These reamers push chips downward as they cut, so they're often used in through holes.

				Lg.
	For Pipe Size	Reamer Dia. (B to A)	Material	Flute	Overall	No. of Flutes	Spiral Direction	Cutting Dia. Tolerance	For Deburring	For Use On		Each
Spiral Flute







				Inch

				1/4 to 2	0.2500" to 2.2656" (1/4" to 2 17/64")	High-Speed Steel	3 7/8"	5 7/8"	12	Left Hand	-0.003" to 0.003"	Inner Pipe Edges, Inner Tube Edges, Inner Conduit Edges, Sheet Edges	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	3017A18	0000000

L-Handle Shank


Straight Flute	Spiral Flute

Turn these reamers with the long ratcheting handle, which provides more leverage than a T-handle.

Straight Flute—The most common flute style, these reamers are suitable for a wide range of applications, but not recommended for holes with a keyway or other breaks in the surface.

Hardened Steel—Typically more economical but less durable than high-speed steel, these are for general purpose reaming.

Right-Hand Spiral—These reamers pull chips upward as they cut, so they're often used in blind holes.

Left-Hand Spiral—These reamers push chips downward as they cut, so they're often used in through holes.

				Lg.
	For Pipe Size	Reamer Dia. (B to A)	Material	Flute	Reamer Handle	Ratcheting Handle	No. of Flutes	Spiral Direction	For Deburring	For Use On		Each
Straight Flute







				Inch

				1/8 to 2	0.2500" to 2.2500" (1/4" to 2 1/4")	Hardened Steel	6 3/8"	6 5/8"	16"	5	—	Inner Pipe Edges, Inner Tube Edges, Inner Conduit Edges	Aluminum, Brass, Bronze, Copper, Iron, Plastic, Stainless Steel, Steel	3678N12	0000000


				3/8 to 3	0.3750" to 3.2500" (3/8" to 3 1/4")	Hardened Steel	9"	10"	16"	5	—	Inner Pipe Edges, Inner Tube Edges, Inner Conduit Edges	Aluminum, Brass, Bronze, Copper, Iron, Plastic, Stainless Steel, Steel	3678N13	000000


				Spiral Flute







								Inch

								1/4 to 2	0.1875" to 2.2500" (3/16" to 2 1/4")	Hardened Steel	5 1/8"	6 7/8"	16"	6	Right Hand	Inner Pipe Edges, Inner Tube Edges, Inner Conduit Edges	Aluminum, Brass, Bronze, Copper, Iron, Plastic, Stainless Steel, Steel	3678N11	000000


								2 1/2 to 4	2.3125" to 4.2500" (2 5/16" to 4 1/4")	Hardened Steel	7"	10 1/2"	16"	9	Left Hand	Inner Pipe Edges, Inner Tube Edges, Inner Conduit Edges	Aluminum, Brass, Bronze, Copper, Iron, Plastic, Stainless Steel, Steel	3678N14	000000

Bit Adapter/Deburring Bits for Conduit

Power troublesome burrs off of thin-wall (EMT) conduit and attach fittings in less time than traditional hand tools. These bits have a _1/4" hex shank that fits quick-change drill chucks and power screwdrivers to quickly deburr the inside and outside edges of conduit in a single step. Use the No. 2 square recess bit to install adapters and connectors.

For Deburring Inner Conduit Edges and Outer Conduit Edges

Bits													Replacement Blades
Shank			For Bit Shank
Type	Hex Size	For EMT Conduit Trade Size	Type	Hex Size	Bits Included	Blade Style	Blade Material	Overall Lg.	For Tool Type	For Use On		Each	Pkg. Qty.		Pkg.
Quick-Change Hex	1/4"	1/2, 3/4, 1	Hex	1/4"	No. 2 Square	Fixed	Steel	5 3/4"	Powered Screwdriver or Drill	Steel, Aluminum, Stainless Steel	3421N11	000000	1	3414N12	000000

Deburring Scraper Drill Attachments for Pipe and Tube Edges

These drill attachments scrape both the inner and outer edges of plastic pipe and tube to finish them for connections. There’s a hex shank on each end—flip attachments around in your drill to switch from deburring inside edges to outside edges. Use in drills 14V and up.

For Deburring Inner Pipe Edges, Outer Pipe Edges, Inner Tube Edges, and Outer Tube Edges


For Deburring Inner Tube Edges	For Deburring Outer Tube Edges

Tools										Replacement Blades
						Blade
Body Material	For Use On	Overall Lg.	Hex Shank Size	For Tube OD	For Pipe Size	Material	Style		Each		Each
Steel	Plastic	4 1/2"	3/8"	3/4" to 2 1/2"	3/8 to 2	Carbide	Fixed	3413N11	000000	3413N12	000000

Screwdriver/Deburring Scrapers for Conduit

Smooth the edges of cut conduit and screw in fittings with a single hand tool. The hooked blades scrape the inside and outside of thin-wall (EMT) conduit at the same time, quickly smoothing any sharp edges. Fit the hooded screwdriver tip over screw heads to install fittings, even in hard-to-reach places.

For Deburring Inner Conduit Edges, Outer Conduit Edges


		Screwdriver Tip

Tools										Replacement Blades
						Blade
Handle Material	Grip Style	For Use On	Overall Lg.	For EMT Conduit Trade Size	Drive Size	Material	Style		Each	Pkg. Qty.		Pkg.
Rubber	Cushion	Steel, Aluminum, Stainless Steel	7 1/2"	1/2, 3/4, 1	5/16"	Steel	Fixed	3414N11	000000	1	3414N12	000000