M12 Drill Bits | McMaster-Carr

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10 Products

Tap and Drill Bit Sets

Set with Metal Case

Set with Plastic Pouch

Drill and tap a variety of hole sizes. These taps and drill bits are for use on metal and plastic.

Carbon steel taps are for thread repair and occasional tapping.

High-speed steel taps and drill bits have a longer tool life than carbon steel. Uncoated high-speed steel taps and drill bits are strong enough for most jobs but don’t last as long as other high-speed steel taps and drill bits. Use them for small-scale jobs.

Taper-chamfer taps have 7-10 chamfered threads at the tip for cutting into the workpiece. They require less torque than other chamfer types, making them a good choice for starting threads and tapping through holes. However, a longer taper means that they cannot thread as close to the bottom of closed-end holes.

Plug-chamfer taps are a versatile choice for most tapping applications. With 3-5 chamfered cutting threads, they require moderate torque and are often used for start-to-finish tapping of through holes and closed-end holes. However, they do not start threads as easily as taper chamfers. When using them to tap closed-end holes, be sure to leave sufficient space at the bottom for chips to accumulate.

Bottoming-chamfer taps cut into the workpiece with just 1-2 chamfered threads. This short chamfer lets them thread holes closer to the bottom than other taps, but they require more torque to start threads.

Uncoated Carbon Steel Taps
No. of Pieces	Chamfer Type	Tap Sizes Included	No. of Flutes	Drill Bit Sizes Included	Drill Bit Material	Container Type	Includes		Each
29	Taper, Plug, Bottoming	3 each of sizes: M3 × 0.50 mm M4 × 0.70 mm M5 × 0.80 mm M6 × 1.00 mm M8 × 1.25 mm M10 × 1.50 mm M12 × 1.75 mm	3, 4	2.5 mm 3.3 mm 4.2 mm 5.0 mm 6.8 mm 8.5 mm 10.2 mm	Black Oxide High-Speed Steel	Metal Case	Tap Wrench	0000000	0000000
Uncoated High-Speed Steel Taps
16	Plug	1 each of sizes: M3 × 0.50 mm M3.5 × 0.60 mm M4 × 0.70 mm M5 × 0.80 mm M6 × 1.00 mm M8 × 1.25 mm M10 × 1.50 mm M12 × 1.75 mm	3, 4	2.5 mm 2.9 mm 3.3 mm 4.2 mm 5.0 mm 6.75 mm 8.5 mm 10.25 mm	Black Oxide High-Speed Steel	Plastic Pouch	__	0000000	000000
18	Plug	1 each of sizes: M2.5 × 0.45 mm M3 × 0.50 mm M3.5 × 0.60 mm M4 × 0.70 mm M5 × 0.80 mm M6 × 1.00 mm M8 × 1.25 mm M10 × 1.50 mm M12 × 1.75 mm	3, 4	2.05 mm 2.5 mm 2.9 mm 3.3 mm 4.2 mm 5.0 mm 6.7 mm 8.5 mm 10.2 mm	Uncoated High-Speed Steel	Metal Case	__	00000000	000000
29	Taper, Plug, Bottoming	3 each of sizes: M3 × 0.50 mm M4 × 0.70 mm M5 × 0.80 mm M6 × 1.00 mm M8 × 1.25 mm M10 × 1.50 mm M12 × 1.75 mm	3, 4	2.5 mm 3.3 mm 4.2 mm 5.0 mm 6.8 mm 8.5 mm 10.2 mm	Black Oxide High-Speed Steel	Metal Case	Tap Wrench	0000000	000000

Chip-Clearing Tap and Drill Bit Sets for Through-Holes

Also known as gun taps, the taps in these sets have spiral-point flutes that push chips ahead of the tap and out of through holes. Because they don't need to be reversed to prevent buildup, they produce threads more efficiently than standard taps and are suitable for production work. Taps have a square shank for compatibility with tap wrenches and tap holders for drill presses and milling machines. With a plug chamfer, they have 3-5 chamfered cutting threads, so they're suitable for start-to-finish tapping. All taps and drill bits are made of high-speed steel for use on most metal and plastic.

For technical drawings and 3-D models, click on a part number.

Gold Oxide High-Speed Steel
No. of Pieces	Chamfer Type	Tap Sizes Included	Thread Type	No. of Flutes	Pitch Dia. Limit	Drill Bit Sizes Included	Drill Bit Material	Container Type		Each
18	Plug	M2.5 × 0.45 mm M3 × 0.5 mm M3.5 × 0.6 mm M4 × 0.7 mm M5 × 0.8 mm M6 × 1.00 mm M8 × 1.25 mm M10 × 1.5 mm M12 × 1.75 mm	Metric	2, 3	D3, D4, D5, D6	2.05 mm 2.5 mm 2.9 mm 3.3 mm 4.2 mm 5 mm 6.7 mm 8.5 mm 10.2 mm	Gold Oxide High-Speed Steel	Metal Case	00000000	0000000

Tap, Die, and Drill Bit Sets

Cut and repair threads and drill holes in many different sizes. Tap and die wrenches are included. The dies are hex shaped for use with conventional wrenches. The taps are made of carbon steel and are recommended for thread repair and occasional tapping.

Carbon Steel
No. of Pieces	Tap Sizes Included	Die Sizes Included	Drill Bit Sizes Included	Container Type	Includes		Each
Right-Hand Thread
117	4-40, 6-32, 8-32, 10-24, 10-32, 12-24,; 1/8"-27, 1/8"-28, 1/4"-20, 1/4"-28, 5/16"-18, 5/16"-24,; 3/8"-16, 3/8"-24, 7/16"-14, 7/16"-20, 1/2"-13, 1/2"-20,; M3 × 0.50 mm, M4 × 0.70 mm, M4 × 0.75 mm, M5 × 0.80 mm, M5 × 0.90 mm, M6 × 1.00 mm,; M7 × 1.00 mm, M8 × 1.00 mm, M8 × 1.25 mm, M9 × 1.00 mm, M9 × 1.25 mm,; M10 × 1.25 mm, M10 × 1.50 mm, M11 × 1.50 mm, M12 × 1.50 mm, and M12 × 1.75 mm	4-40, 6-32, 8-32, 10-24, 10-32, 12-24, 1/8"-27, 1/8"-28, 1/4"-20, 1/4"-28, 5/16"-18, 5/16"-24, 3/8"-16, 3/8"-24, 7/16"-14, 7/16"-20, 1/2"-13, 1/2"-20, M3 × 0.50 mm, M4 × 0.70 mm, M4 × 0.75 mm, M5 × 0.80 mm, M5 × 0.90 mm, M6 × 1.00 mm, M7 × 1.00 mm, M8 × 1.00 mm, M8 × 1.25 mm, M9 × 1.00 mm, M9 × 1.25 mm, M10 × 1.25 mm, M10 × 1.50 mm, M11 × 1.50 mm, M12 × 1.50 mm, M12 × 1.75 mm	5/64", 7/64", 5/32", 1/4", 19/64", 5/16", 21/64", 3/8", 25/64", 13/32", 27/64", 29/64", 43 ga., 39 ga., 36 ga., 30 ga., 29 ga., 25 ga., 21 ga., 20 ga., 16 ga., 9 ga., 7 ga., 3 ga., B, F, H, I, J, O, Q, R, S, U, and Z	Plastic Case	Die Wrench (2), Extractor (5), Tap Wrench (3), Thread Gauge (2)	00000000	0000000

Hex Shank Combination Drill Bits/Taps for Drills and Screwdrivers

With a drill bit point to drive into the workpiece, these taps can drill and tap holes in a single step. A 1/4" hex shank connects them directly to tools such as drills and power screwdrivers. They're made of high-speed steel and are for use on most metal and plastic.

Their spiral flutes keep chips clear by drawing them back toward the tap and out of the hole. All have a plug chamfer with 3-5 chamfered cutting threads, so they're suitable for start-to-finish tapping.

Uncoated taps are strong enough for most tapping jobs but have the shortest tool life. Titanium Nitride (TiN) coated taps resist heat and wear better than uncoated taps, letting them last up to twice as long.

For technical drawings and 3-D models, click on a part number.

Metric

Thread				Drill Bit						Plug Chamfer
Size	Pitch, mm	Lg.	Overall Lg.	Size	Decimal Size Equivalent	Point Angle	No. of Flutes	Pitch Dia. Limit	Hex Shank Size		Each
Uncoated High-Speed Steel
M12	1.25	1 3/8"	5 1/16"	10.8 mm	0.4251"	118°	2	D5	1/4"	0000000	000000
M12	1.75	1 3/8"	5 1/16"	10.2 mm	0.4015"	118°	2	D6	1/4"	0000000	00000
Titanium Nitride (TiN) Coated High-Speed Steel
M12	1.75	1 3/8"	5 1/16"	10.2 mm	0.4015"	118°	2	D6	1/4"	00000000	00000

Combination Drill Bit/Taps

Spiral Flute

Drill holes and cut threads without switching tools. Made of high-speed steel, these taps are for use on most metal and plastic. The square shank is compatible with tap holders for drill presses and milling machines. All have a plug chamfer with 3-5 chamfered cutting threads, so they're suitable for start-to-finish tapping.

Taps with spiral flutes keep chips clear by drawing them back toward the tap and out of the hole.

Uncoated taps are strong enough for most tapping jobs but have a shorter tool life.

For technical drawings and 3-D models, click on a part number.

Metric

Thread				Drill Bit					Plug Chamfer
Size	Pitch, mm	Lg.	Overall Lg.	Size	Decimal Size Equivalent	Point Angle	Flute Type	Pitch Dia. Limit		Each
Uncoated High-Speed Steel
M12	1.75	1 3/8"	4 1/16"	10.2 mm	0.4015"	110°	Spiral	D6	0000000	000000