Metric Reamers | McMaster-Carr

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173 Products

Reamers

Finish holes to precise inch, metric, wire gauge, or letter sizes with these reamers.

Round Shank

Straight 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.

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.

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

Cobalt Steel—With better heat and wear resistance than high-speed steel, these reamers run up to 25% faster, last longer, and perform better on hard materials, such as cast iron, hardened steel, titanium, and stainless steel.

Carbide—For the highest level of accuracy when cutting hard materials, these are our hardest, strongest, and most wear-resistant reamers. They're used on materials such as iron, hardened steel, steel alloys, and plastic. Their hardness means they are brittle, so a highly rigid setup, such as a CNC machine, is necessary to prevent the reamer from breaking.

			Lg., mm
	Reamer Dia.	Material	Flute	Overall	No. of Flutes	Cutting Dia. Tolerance, mm	For Use On		Each
Straight Flute







				Metric

				1.0000 mm	High-Speed Steel	12.7	63.5	4	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	000000


				1.0000 mm	Carbide	6.4	38.1	4	0 to 0.005	Aluminum, Brass, Bronze, Fiberglass, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel	00000000	00000
				1.5000 mm	High-Speed Steel	12.7	63.5	4	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000
				1.5000 mm	Cobalt Steel	12.7	63.5	4	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel, Tool Steel, Hardened Steel	0000000	00000
				1.5000 mm	Carbide	9.5	38.1	4	0 to 0.005	Aluminum, Brass, Bronze, Fiberglass, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel	00000000	00000
				1.6000 mm	High-Speed Steel	12.7	63.5	4	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	00000000	00000
				1.6500 mm	High-Speed Steel	12.7	63.5	4	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	00000000	00000
				2.0000 mm	High-Speed Steel	19.1	76.2	4	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000
				2.0000 mm	Cobalt Steel	19.1	76.2	4	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel, Tool Steel, Hardened Steel	0000000	00000
				2.0000 mm	Carbide	12.7	44.5	4	0 to 0.005	Aluminum, Brass, Bronze, Fiberglass, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel	00000000	00000
				2.4000 mm	High-Speed Steel	19.1	76.2	4	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	00000000	00000


				2.5000 mm	High-Speed Steel	22.2	88.9	4	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000
				2.5000 mm	Cobalt Steel	22.2	88.9	4	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel, Tool Steel, Hardened Steel	0000000	00000
				2.5000 mm	Carbide	15.9	57.2	4	0 to 0.005	Aluminum, Brass, Bronze, Fiberglass, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel	00000000	00000
				3.0000 mm	High-Speed Steel	22.2	88.9	4	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000
				3.0000 mm	Cobalt Steel	22.2	88.9	4	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel, Tool Steel, Hardened Steel	0000000	00000
				3.0000 mm	Carbide	15.9	57.2	4	0 to 0.005	Aluminum, Brass, Bronze, Fiberglass, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel	00000000	00000
				3.5000 mm	High-Speed Steel	25.4	101.6	4	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000
				3.5000 mm	Cobalt Steel	25.4	101.6	4	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel, Tool Steel, Hardened Steel	0000000	00000
				3.5000 mm	Carbide	19.1	63.5	4	0 to 0.005	Aluminum, Brass, Bronze, Fiberglass, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel	00000000	00000
				4.0000 mm	High-Speed Steel	25.4	101.6	6	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000


				4.0000 mm	Cobalt Steel	25.4	101.6	6	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel, Tool Steel, Hardened Steel	0000000	00000
				4.0000 mm	Carbide	19.1	63.5	4	0 to 0.005	Aluminum, Brass, Bronze, Fiberglass, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel	00000000	00000
				4.2000 mm	High-Speed Steel	28.6	114.3	6	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	00000000	00000
				4.5000 mm	High-Speed Steel	28.6	114.3	6	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000
				4.5000 mm	Cobalt Steel	28.6	114.3	6	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel, Tool Steel, Hardened Steel	0000000	00000
				4.5000 mm	Carbide	22.2	69.8	6	0 to 0.0003	Aluminum, Brass, Bronze, Fiberglass, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel	000000000	00000
				5.0000 mm	High-Speed Steel	31.8	127	6	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000
				5.0000 mm	Cobalt Steel	31.8	127	6	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel, Tool Steel, Hardened Steel	0000000	00000
				5.0000 mm	Carbide	25.4	76.2	4	0 to 0.005	Aluminum, Brass, Bronze, Fiberglass, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel	00000000	00000
				5.5000 mm	High-Speed Steel	31.8	127	6	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000


				5.5000 mm	Cobalt Steel	31.8	127	6	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel, Tool Steel, Hardened Steel	0000000	00000
				5.5000 mm	Carbide	25.4	76.2	4	0 to 0.005	Aluminum, Brass, Bronze, Fiberglass, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel	00000000	00000
				6.0000 mm	High-Speed Steel	38.1	152.4	6	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000
				6.0000 mm	Cobalt Steel	38.1	152.4	6	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel, Tool Steel, Hardened Steel	0000000	00000
				6.0000 mm	Carbide	25.4	76.2	4	0 to 0.005	Aluminum, Brass, Bronze, Fiberglass, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel	00000000	00000
				6.5000 mm	High-Speed Steel	38.1	152.4	6	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000
				6.5000 mm	Cobalt Steel	38.1	152.4	6	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel, Tool Steel, Hardened Steel	0000000	00000
				6.5000 mm	Carbide	28.6	82.6	6	0 to 0.0076	Aluminum, Brass, Bronze, Fiberglass, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel	00000000	00000
				7.0000 mm	High-Speed Steel	38.1	152.4	6	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000
				7.0000 mm	Cobalt Steel	38.1	152.4	6	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel, Tool Steel, Hardened Steel	0000000	00000


				7.0000 mm	Carbide	28.6	82.6	6	0 to 0.0076	Aluminum, Brass, Bronze, Fiberglass, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel	00000000	00000
				7.5000 mm	High-Speed Steel	38.1	152.4	6	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000
				7.5000 mm	Cobalt Steel	38.1	152.4	6	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel, Tool Steel, Hardened Steel	0000000	00000
				7.5000 mm	Carbide	28.6	82.5	6	0 to 0.0003	Aluminum, Brass, Bronze, Fiberglass, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel	000000000	00000
8.0000 mm				High-Speed Steel	38.1	152.4	6	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000
8.0000 mm	Cobalt Steel			38.1	152.4	6	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel, Tool Steel, Hardened Steel	0000000	00000
8.0000 mm	Carbide			28.6	82.6	6	0 to 0.0076	Aluminum, Brass, Bronze, Fiberglass, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel	00000000	00000
8.5000 mm	High-Speed Steel			38.1	152.4	6	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000
8.5000 mm	Cobalt Steel			38.1	152.4	6	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel, Tool Steel, Hardened Steel	0000000	00000
8.5000 mm	Carbide	31.8		88.9	6	0 to 0.0076	Aluminum, Brass, Bronze, Fiberglass, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel	00000000	00000
9.0000 mm	High-Speed Steel	44.4	177.8	6	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000
9.0000 mm	Cobalt Steel	44.5	177.8	6	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel, Tool Steel, Hardened Steel	0000000	00000
9.0000 mm	Carbide	31.8	88.9	6	0 to 0.0076	Aluminum, Brass, Bronze, Fiberglass, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel	00000000	00000
9.5000 mm	High-Speed Steel	44.4	177.8	6	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000
9.5000 mm	Cobalt Steel	44.5	177.8	6	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel, Tool Steel, Hardened Steel	0000000	00000
10.0000 mm	High-Speed Steel	44.4	177.8	6	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000
10.0000 mm	Cobalt Steel	44.5	177.8	6	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel, Tool Steel, Hardened Steel	0000000	00000
10.0000 mm	Carbide	31.8	88.9	6	0 to 0.0076	Aluminum, Brass, Bronze, Fiberglass, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel	00000000	00000
10.5000 mm	High-Speed Steel	44.4	177.8	6	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000
10.5000 mm	Cobalt Steel	44.5	177.8	6	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel, Tool Steel, Hardened Steel	0000000	00000
11.0000 mm	High-Speed Steel	44.4	177.8	6	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000
11.0000 mm	Cobalt Steel	44.5	177.8	6	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel, Tool Steel, Hardened Steel	0000000	00000
11.0000 mm	Carbide	34.9	101.6	6	0 to 0.0076	Aluminum, Brass, Bronze, Fiberglass, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel	00000000	000000
11.5000 mm	High-Speed Steel	44.4	177.8	6	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000
11.5000 mm	Cobalt Steel	44.5	177.8	6	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel, Tool Steel, Hardened Steel	0000000	00000
12.0000 mm	High-Speed Steel	50.8	203.2	6	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000
12.0000 mm	Cobalt Steel	44.5	177.8	6	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel, Tool Steel, Hardened Steel	0000000	00000
12.0000 mm	Carbide	34.9	101.6	6	0 to 0.0076	Aluminum, Brass, Bronze, Fiberglass, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel	00000000	000000
12.5000 mm	High-Speed Steel	50.8	203.2	6	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000
12.5000 mm	Cobalt Steel	50.8	203.2	6	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel, Tool Steel, Hardened Steel	0000000	00000
13.0000 mm	High-Speed Steel	50.8	203.2	6	0 to 0.008	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000
13.0000 mm	Cobalt Steel	50.8	203.2	8	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel, Tool Steel, Hardened Steel	00000000	00000
13.0000 mm	Carbide	38.1	101.6	6	0 to 0.0003	Aluminum, Brass, Bronze, Fiberglass, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel	000000000	000000
13.5000 mm	High-Speed Steel	50.8	203.2	6	0 to 0.008	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000
14.0000 mm	High-Speed Steel	50.8	203.2	8	0 to 0.008	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000
14.0000 mm	Cobalt Steel	50.8	203.2	8	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel, Tool Steel, Hardened Steel	00000000	00000
14.0000 mm	Carbide	38.1	101.6	6	0 to 0.0003	Aluminum, Brass, Bronze, Fiberglass, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel	000000000	000000
14.5000 mm	High-Speed Steel	50.8	203.2	8	0 to 0.008	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000
15.0000 mm	High-Speed Steel	50.8	203.2	8	0 to 0.008	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000
15.0000 mm	Cobalt Steel	50.8	203.2	8	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel, Tool Steel, Hardened Steel	00000000	00000
15.0000 mm	Carbide	44.4	101.6	6	0 to 0.0003	Aluminum, Brass, Bronze, Fiberglass, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel	000000000	000000
15.5000 mm	High-Speed Steel	57.2	228.6	8	0 to 0.008	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000
16.0000 mm	High-Speed Steel	57.2	228.6	8	0.0025 to 0.01	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000
16.0000 mm	Cobalt Steel	57.2	228.6	8	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel, Tool Steel, Hardened Steel	00000000	00000
16.0000 mm	Carbide	44.4	101.6	6	0 to 0.0003	Aluminum, Brass, Bronze, Fiberglass, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel	000000000	000000
16.5000 mm	High-Speed Steel	57.2	228.6	8	0.0025 to 0.01	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000
17.0000 mm	High-Speed Steel	57.2	228.6	8	0.0025 to 0.01	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000
17.0000 mm	Cobalt Steel	57.2	228.6	8	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel, Tool Steel, Hardened Steel	00000000	000000
17.5000 mm	High-Speed Steel	57.2	228.6	8	0.0025 to 0.01	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000
18.0000 mm	High-Speed Steel	57.2	228.6	8	0.0025 to 0.01	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000
18.0000 mm	Cobalt Steel	57.2	228.6	8	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel, Tool Steel, Hardened Steel	00000000	000000
18.5000 mm	High-Speed Steel	63.5	241.3	8	0.0025 to 0.01	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000
19.0000 mm	High-Speed Steel	63.5	241.3	8	0.0025 to 0.01	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000
19.5000 mm	High-Speed Steel	63.5	241.3	8	0.0025 to 0.01	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000
20.0000 mm	High-Speed Steel	63.5	241.3	8	0.0025 to 0.01	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000
20.0000 mm	Cobalt Steel	63.5	241.3	8	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel, Tool Steel, Hardened Steel	00000000	000000
20.5000 mm	High-Speed Steel	63.5	241.3	8	0.0025 to 0.01	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000
21.0000 mm	High-Speed Steel	63.5	241.3	8	0.0025 to 0.01	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000
21.5000 mm	High-Speed Steel	66.7	254	8	0.0025 to 0.01	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000
22.0000 mm	High-Speed Steel	66.7	254	8	0.0025 to 0.01	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000
22.5000 mm	High-Speed Steel	66.7	254	8	0.0025 to 0.01	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	000000
23.0000 mm	High-Speed Steel	66.7	254	8	0.0025 to 0.01	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	000000	000000
23.5000 mm	High-Speed Steel	66.7	254	8	0.0025 to 0.01	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	00000000	000000
24.0000 mm	High-Speed Steel	66.7	254	8	0.0025 to 0.01	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	000000	000000
25.0000 mm	High-Speed Steel	69.9	266.7	8	0.0025 to 0.01	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	000000	000000
30.0000 mm	High-Speed Steel	73	279.4	10	0 to 0.005	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	00000000	000000

Square Shank

Spiral Flute

Turn these reamers by hand with an adjustable wrench or straight-handle tap wrench (sold separately).

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., mm
	Reamer Dia.	Material	Square Shank Size, mm	Flute	Overall	No. of Flutes	Spiral Direction	Cutting Dia. Tolerance, mm	Specs. Met	For Use On		Each
Spiral Flute







				Metric

				2.0000 mm	High-Speed Steel	1.6	25	50	4	Left Hand	0.004 to 0.008	DIN 206	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	000000


				2.5000 mm	High-Speed Steel	2.1	29	58	4	Left Hand	0.004 to 0.008	DIN 206	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000
				3.0000 mm	High-Speed Steel	2.4	31	62	6	Left Hand	0.004 to 0.008	DIN 206	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000
				4.0000 mm	High-Speed Steel	3	38	76	6	Left Hand	0.005 to 0.01	DIN 206	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000
				5.0000 mm	High-Speed Steel	3.8	44	87	6	Left Hand	0.005 to 0.01	DIN 206	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000
				5.5000 mm	High-Speed Steel	4.3	47	93	6	Left Hand	0.005 to 0.01	DIN 206	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000
				6.0000 mm	High-Speed Steel	4.9	47	93	6	Left Hand	0.005 to 0.01	DIN 206	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000
				6.5000 mm	High-Speed Steel	4.9	50	100	6	Left Hand	0.006 to 0.012	DIN 206	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000
				7.0000 mm	High-Speed Steel	5.5	54	107	6	Left Hand	0.006 to 0.012	DIN 206	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	000000
				8.0000 mm	High-Speed Steel	6.2	58	115	6	Left Hand	0.006 to 0.012	DIN 206	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	000000
				9.0000 mm	High-Speed Steel	7	62	124	6	Left Hand	0.006 to 0.012	DIN 206	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	000000


				10.0000 mm	High-Speed Steel	8	66	133	6	Left Hand	0.006 to 0.012	DIN 206	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	000000
				11.0000 mm	High-Speed Steel	9	71	142	6	Left Hand	0.008 to 0.015	DIN 206	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	000000
				12.0000 mm	High-Speed Steel	9	76	152	6	Left Hand	0.008 to 0.015	DIN 206	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	000000
				13.0000 mm	High-Speed Steel	9	76	152	6	Left Hand	0.008 to 0.015	DIN 206	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	000000
				14.0000 mm	High-Speed Steel	11	81	163	8	Left Hand	0.008 to 0.015	DIN 206	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	000000
				15.0000 mm	High-Speed Steel	12	81	163	8	Left Hand	0.008 to 0.015	DIN 206	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	000000
				16.0000 mm	High-Speed Steel	12	87	175	8	Left Hand	0.008 to 0.015	DIN 206	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	000000
				17.0000 mm	High-Speed Steel	13	87	175	8	Left Hand	0.008 to 0.015	DIN 206	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	000000
				18.0000 mm	High-Speed Steel	14.5	93	188	8	Left Hand	0.008 to 0.015	DIN 206	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	000000
				20.0000 mm	High-Speed Steel	16	100	201	8	Left Hand	0.009 to 0.017	DIN 206	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	000000


				22.0000 mm	High-Speed Steel	18	107	215	8	Left Hand	0.009 to 0.017	DIN 206	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	000000
				25.0000 mm	High-Speed Steel	20	115	231	8	Left Hand	0.009 to 0.017	DIN 206	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	000000

Reamers for Taper-Pin Holes

Shape holes to match the profile of taper pins. After drilling a hole that matches the size of the small end of the taper pin you want to install, use these reamers to taper and finish the hole.

Round Shank

Helix 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.

Helix Flute—Prevent clogging when removing excess material with helix flutes. They also leave a smoother finish than straight flutes.

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., mm
	For Taper Pin No.	Reamer Dia. (A), mm	Reamer Dia. (B), mm	Material	Flute	Overall	No. of Flutes	Spiral Direction	Cutting Dia. Tolerance, mm	Rate of Taper	For Use On		Each
Helix Flute







				Metric

				2 mm	2.8600	1.9000	High-Speed Steel	48	73	3	Left Hand	-0.0254 to 0.0254	1:50	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	00000000	000000


				2.5 mm	3.4600	2.4000	High-Speed Steel	53	79	3	Left Hand	-0.0254 to 0.0254	1:50	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	00000000	00000
				3 mm	4.1600	2.9000	High-Speed Steel	63	88	3	Left Hand	-0.0254 to 0.0254	1:50	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	00000000	00000
				4 mm	5.4000	3.9000	High-Speed Steel	75	100	3	Left Hand	-0.0254 to 0.0254	1:50	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	00000000	00000
				5 mm	6.6400	4.9000	High-Speed Steel	87	115	3	Left Hand	-0.0254 to 0.0254	1:50	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	00000000	00000
				6 mm	8.2800	5.9000	High-Speed Steel	119	150	3	Left Hand	-0.0254 to 0.0254	1:50	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	00000000	00000
				8 mm	10.7200	7.9000	High-Speed Steel	141	177	3	Left Hand	-0.0254 to 0.0254	1:50	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	00000000	00000
				10 mm	13.1600	9.9000	High-Speed Steel	163	205	3	Left Hand	-0.0254 to 0.0254	1:50	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	00000000	000000
				12 mm	15.7400	11.8600	High-Speed Steel	194	240	3	Left Hand	-0.0254 to 0.0254	1:50	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	00000000	000000
				13 mm	16.7400	12.8000	High-Speed Steel	194	240	3	Left Hand	-0.0254 to 0.0254	1:50	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	00000000	000000

Square Shank

Straight Flute

Turn these reamers by hand with an adjustable wrench, straight-handle tap wrench, or pin vise (sold separately).

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.

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

						Lg., mm
	For Taper Pin No.	Reamer Dia. (A), mm	Reamer Dia. (B), mm	Material	Square Shank Size, mm	Flute	Overall	No. of Flutes	Cutting Dia. Tolerance, mm	Rate of Taper	For Use On		Each
Straight Flute







				Metric

				2 mm	2.8600	1.9000	High-Speed Steel	2.2	48	68	4	0 to 0.075	1:50	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	00000000	0000000


				2.5 mm	3.3600	2.4000	High-Speed Steel	2.8	48	68	4	0 to 0.075	1:50	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	00000000	00000
				3 mm	4.0600	2.9000	High-Speed Steel	3.2	58	80	4	0 to 0.075	1:50	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	00000000	00000
				4 mm	5.2600	3.9000	High-Speed Steel	4.0	68	93	4	0 to 0.075	1:50	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	00000000	00000
				5 mm	6.3600	4.9000	High-Speed Steel	5.0	73	100	4	0 to 0.075	1:50	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	00000000	00000
				6 mm	8.0000	5.9000	High-Speed Steel	6.3	105	135	6	0 to 0.125	1:50	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	00000000	000000
				8 mm	10.8000	7.9000	High-Speed Steel	8.0	145	180	6	0 to 0.125	1:50	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	00000000	000000
				10 mm	13.4000	9.9000	High-Speed Steel	10.0	175	215	6	0 to 0.125	1:50	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	00000000	000000
				12 mm	16.0000	11.8000	High-Speed Steel	11.2	210	255	8	0 to 0.125	1:50	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	00000000	000000
				13 mm	16.7400	12.8600	High-Speed Steel	12.5	210	255	8	0 to 0.125	1:50	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	00000000	000000
				16 mm	20.4000	15.8000	High-Speed Steel	14.0	230	280	8	0 to 0.125	1:50	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	00000000	000000


				20 mm	24.8000	19.8000	High-Speed Steel	18.0	250	310	8	0 to 0.125	1:50	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	00000000	00000000

Reamers for Hole Alignment

Enlarge holes to correct misalignment and overlap. Misaligned holes often have a narrow entry, so the tapered shape is easier to insert and makes more contact to remove the overlapping material. These are also known as bridge and car reamers.

Hex Shank

Helix Flute

The shank fits hex impact sockets, so you can use an impact wrench to both ream the hole and install a fastener.

Helix Flute—Prevent clogging when removing excess material with helix flutes. They also leave a smoother finish than straight flutes.

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.

Strong Hold—Magnets on the shank’s end keep these reamers from accidentally falling out of your tool.

					Lg., mm
	Reamer Dia. (A)	Reamer Dia. (B), mm	Material	Hex Shank Size, mm	Flute	Overall	Spiral Direction	Cutting Dia. Tolerance, mm	Performance	For Use On		Each
Helix Flute







				Metric

				16.0000 mm	7.9000	High-Speed Steel	24	114	152	Left Hand	0 to 0.254	Strong Hold	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	00000000	000000


				18.0000 mm	10.0000	High-Speed Steel	24	114	165	Left Hand	0 to 0.254	Strong Hold	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	00000000	00000
				20.0000 mm	11.9000	High-Speed Steel	32	114	178	Left Hand	0 to 0.254	Strong Hold	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	00000000	00000
				22.0000 mm	13.9000	High-Speed Steel	36	127	178	Left Hand	0 to 0.254	Strong Hold	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	00000000	000000
				28.0000 mm	21.5000	High-Speed Steel	41	127	178	Left Hand	0 to 0.254	Strong Hold	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	00000000	000000
				32.0000 mm	25.0000	High-Speed Steel	46	127	178	Left Hand	0 to 0.254	Strong Hold	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	00000000	000000
				36.0000 mm	30.0000	High-Speed Steel	46	127	200	Left Hand	0 to 0.254	Strong Hold	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	00000000	000000
				39.0000 mm	33.5000	High-Speed Steel	50	127	200	Left Hand	0 to 0.254	Strong Hold	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	00000000	000000

Round-Shank Reamer Drill Bits for Taper-Pin Holes

Drill and ream holes for taper pins with the same tool. These tools have chip breakers on the cutting edge.

		Reamer Dia., mm		Lg., mm
	For Taper Pin No., mm	(A)	(B)	Flute	Overall	No. of Flutes	Flute Type	Spiral Direction	Rate of Taper	Point Angle	For Use On		Each
High-Speed Steel



		2	2.8400	1.9800	43	65	2	Spiral	Right Hand	1:50	118°	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	000000


		2.5	3.4600	2.3300	56	89	2	Spiral	Right Hand	1:50	118°	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000
		3	4.1600	2.8400	66	98	2	Spiral	Right Hand	1:50	118°	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000
		4	5.4000	3.7800	81	119	2	Spiral	Right Hand	1:50	118°	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000
		5	6.6400	4.7000	97	138	2	Spiral	Right Hand	1:50	118°	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000
		6	8.2800	5.7100	129	179	2	Spiral	Right Hand	1:50	118°	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	00000
		8	10.7200	7.6400	154	211	2	Spiral	Right Hand	1:50	118°	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	000000
		10	13.1600	9.6500	175	246	2	Spiral	Right Hand	1:50	118°	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	000000
		12	15.7000	11.9600	198	275	2	Spiral	Right Hand	1:50	118°	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	000000
		14	18.0000	13.8000	210	310	2	Spiral	Right Hand	1:50	118°	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	000000
		16	20.4000	15.8000	230	335	2	Spiral	Right Hand	1:50	118°	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	000000

Reamer Sets

Keep a variety of reamer sizes on hand for finishing holes.

Round Shank

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

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.

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

	Container Type	For Use On		Each
Straight Flute







	Metric

	1-7 mm (Increments of 0.5 mm)	13	High-Speed Steel	Wood Case	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	0000000


	1-13 mm (Increments of 0.5 mm)	25	High-Speed Steel	Metal Case	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	0000000	000000