Fast-Spiral Drill Bits | McMaster-Carr

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176 Products

About Drill Bits

Compare material, finish, length class, and decimal size equivalents.

Chip-Clearing High-Speed Steel Drill Bits


Jobbers' Length High Helix Flute Round Shank	Jobbers' Length Parabolic Flute Round Shank

Standard

Split

With flutes that lift chips out of the hole, you don't have to stop drilling to clear these bits manually. They improve coolant flow to dissipate heat and prevent clogs that can damage the bit and ruin the hole. High-speed steel is good for general purpose drilling in most metals.

High Helix Flute—Less aggressive than parabolic flutes for cleaner cuts in soft metals.

Parabolic Flute—A U-shaped groove on the flutes cuts faster and clears chips more quickly than high-helix bits, so these are better for drilling deeper holes.

Jobbers' Length—These bits have the balance of rigidity and length needed for most applications.

Black Oxide—The dark finish increases wear resistance and reduces friction to improve chip flow, so these bits can last 50% longer than uncoated bits.

Titanium Nitride (TiN) Coated—Drill at higher speeds and last longer than uncoated and oxide-coated bits, especially on tough materials like hardened steel and nickel.

Uncoated—The most economical option, uncoated bits perform best when used on low-carbon steel and aluminum. Polished to reduce friction, they're also known as bright finish bits.

						Shank
	Drill Bit Size	Decimal Size Equiv.	Overall Lg.	Max. Drilling Dp.	Flute Type	Type	Size	Drill Bit Point Type		Each
Jobbers' Length







				Black Oxide

				1/16"	0.0625"	1 3/4"	0.65"	High Helix	Round	1/16"	Split	00000000	00000


				5/64"	0.0781"	2"	0.78"	High Helix	Round	5/64"	Split	00000000	0000
				3/32"	0.0938"	2 1/4"	0.99"	High Helix	Round	3/32"	Split	00000000	0000
				7/64"	0.1094"	2 3/8"	1.09"	High Helix	Round	7/64"	Split	00000000	0000
				1/8"	0.125"	2 5/8"	1.18"	High Helix	Round	1/8"	Split	00000000	0000
				9/64"	0.1406"	2 3/4"	1.25"	High Helix	Round	9/64"	Split	00000000	0000
				5/32"	0.1563"	3"	1.37"	High Helix	Round	5/32"	Split	00000000	0000
				11/64"	0.1719"	3 1/8"	1.5"	High Helix	Round	11/64"	Split	00000000	0000
				3/16"	0.1875"	3 3/8"	1.68"	High Helix	Round	3/16"	Split	00000000	0000
				13/64"	0.2031"	3 3/8"	1.65"	High Helix	Round	13/64"	Split	00000000	0000
				7/32"	0.2188"	3 5/8"	1.81"	High Helix	Round	7/32"	Split	00000000	0000


				15/64"	0.2344"	3 5/8"	1.78"	High Helix	Round	15/64"	Split	00000000	0000
				1/4"	0.25"	4"	2"	High Helix	Round	1/4"	Split	00000000	0000
				17/64"	0.2656"	4 1/4"	2.18"	High Helix	Round	17/64"	Split	00000000	0000
				9/32"	0.2813"	4 1/4"	2.15"	High Helix	Round	9/32"	Split	00000000	0000
				19/64"	0.2969"	4 5/8"	2.34"	High Helix	Round	19/64"	Split	00000000	0000
				5/16"	0.3125"	4 5/8"	2.31"	High Helix	Round	5/16"	Split	00000000	0000
				21/64"	0.3281"	4 5/8"	2.28"	High Helix	Round	21/64"	Split	00000000	0000
				11/32"	0.3438"	4 7/8"	2.49"	High Helix	Round	11/32"	Split	00000000	0000
				23/64"	0.3594"	4 7/8"	2.46"	High Helix	Round	23/64"	Split	00000000	00000
				3/8"	0.375"	5 1/4"	2.68"	High Helix	Round	3/8"	Split	00000000	00000


				25/64"	0.3906"	5 1/4"	2.65"	High Helix	Round	25/64"	Split	00000000	00000
				13/32"	0.4063"	5 1/4"	2.62"	High Helix	Round	13/32"	Split	00000000	00000
				27/64"	0.4219"	5 5/8"	2.84"	High Helix	Round	27/64"	Split	00000000	00000
				7/16"	0.4375"	5 5/8"	2.81"	High Helix	Round	7/16"	Split	00000000	00000
				29/64"	0.4531"	5 5/8"	2.78"	High Helix	Round	29/64"	Split	00000000	00000
				15/32"	0.4688"	6"	3.03"	High Helix	Round	15/32"	Split	00000000	00000
				31/64"	0.4844"	6"	3"	High Helix	Round	31/64"	Split	00000000	00000
				1/2"	0.5"	6"	2.96"	High Helix	Round	1/2"	Split	00000000	00000
				1.0 mm	0.0394"	34 mm	10.1 mm	High Helix	Round	1 mm	Standard	00000000	0000
				1.5 mm	0.0591"	40 mm	15 mm	High Helix	Round	1.5 mm	Standard	00000000	0000


				2.0 mm	0.0787"	49 mm	20 mm	High Helix	Round	2 mm	Split	00000000	0000
				2.5 mm	0.0984"	57 mm	25 mm	High Helix	Round	2.5 mm	Split	00000000	0000
				3.0 mm	0.1181"	61 mm	27 mm	High Helix	Round	3 mm	Split	00000000	0000
				3.5 mm	0.1378"	70 mm	32 mm	High Helix	Round	3.5 mm	Split	00000000	0000
				4.0 mm	0.1575"	75 mm	35 mm	High Helix	Round	4 mm	Split	00000000	0000
				4.2 mm	0.1654"	75 mm	34.6 mm	High Helix	Round	4.2 mm	Split	00000000	0000
				4.5 mm	0.1772"	80 mm	38 mm	High Helix	Round	4.5 mm	Split	00000000	0000
				5.0 mm	0.1969"	86 mm	42 mm	High Helix	Round	5 mm	Split	00000000	0000
				5.5 mm	0.2165"	93 mm	46 mm	High Helix	Round	5.5 mm	Split	00000000	0000
				6.0 mm	0.2362"	93 mm	45 mm	High Helix	Round	6 mm	Split	00000000	00000


				6.5 mm	0.2559"	101 mm	50 mm	High Helix	Round	6.5 mm	Split	00000000	00000
				8.5 mm	0.3346"	117 mm	58 mm	High Helix	Round	8.5 mm	Split	00000000	00000




				Titanium Nitride (TiN) Coated

				1.5 mm	0.0591"	40 mm	18 mm	Parabolic	Round	1.5 mm	Split	0000000	0000


		2.0 mm	0.0787"	49 mm	24 mm	Parabolic	Round	2 mm	Split	0000000	0000
		2.5 mm	0.0984"	57 mm	30 mm	Parabolic	Round	2.5 mm	Split	0000000	0000
		3.0 mm	0.1181"	61 mm	33 mm	Parabolic	Round	3 mm	Split	0000000	0000
		4.0 mm	0.1575"	75 mm	43 mm	Parabolic	Round	4 mm	Split	0000000	0000
		5.0 mm	0.1969"	86 mm	52 mm	Parabolic	Round	5 mm	Split	0000000	0000
		5.2 mm	0.2047"	86 mm	52 mm	Parabolic	Round	5.2 mm	Split	0000000	0000
		5.5 mm	0.2165"	93 mm	57 mm	Parabolic	Round	5.5 mm	Split	0000000	0000
		5.6 mm	0.2205"	93 mm	57 mm	Parabolic	Round	5.6 mm	Split	0000000	0000
		6.0 mm	0.2362"	93 mm	57 mm	Parabolic	Round	6 mm	Split	0000000	00000
		6.8 mm	0.2677"	109 mm	69 mm	Parabolic	Round	6.8 mm	Split	0000000	00000


		7.0 mm	0.2756"	109 mm	69 mm	Parabolic	Round	7 mm	Split	0000000	00000
		7.5 mm	0.2953"	109 mm	69 mm	Parabolic	Round	7.5 mm	Split	0000000	00000
		8.0 mm	0.315"	117 mm	75 mm	Parabolic	Round	8 mm	Split	0000000	00000
		8.5 mm	0.3346"	117 mm	75 mm	Parabolic	Round	8.5 mm	Split	0000000	00000
		10.0 mm	0.3937"	133 mm	87 mm	Parabolic	Round	10 mm	Split	0000000	00000
		10.5 mm	0.4134"	133 mm	87 mm	Parabolic	Round	10.5 mm	Split	0000000	00000
		11.0 mm	0.4331"	142 mm	94 mm	Parabolic	Round	11 mm	Split	0000000	00000
		12.0 mm	0.4724"	151 mm	101 mm	Parabolic	Round	12 mm	Split	0000000	00000
		12.5 mm	0.4921"	151 mm	101 mm	Parabolic	Round	12.5 mm	Split	0000000	00000




				Uncoated

				1/16"	0.0625"	1 7/8"	0.78"	High Helix	Round	1/16"	Standard	00000000	0000


				5/64"	0.0781"	2"	0.88"	High Helix	Round	5/64"	Standard	00000000	0000
				3/32"	0.0938"	2 1/4"	1.1"	High Helix	Round	3/32"	Standard	00000000	0000
				7/64"	0.1094"	2 5/8"	1.33"	High Helix	Round	7/64"	Standard	00000000	0000
				1/8"	0.125"	2 3/4"	1.43"	High Helix	Round	1/8"	Standard	00000000	0000
				9/64"	0.1406"	2 7/8"	1.53"	High Helix	Round	9/64"	Standard	00000000	0000
				5/32"	0.1563"	3 1/8"	1.76"	High Helix	Round	5/32"	Standard	00000000	0000
				11/64"	0.1719"	3 1/4"	1.86"	High Helix	Round	11/64"	Standard	00000000	0000
				3/16"	0.1875"	3 1/2"	2.03"	High Helix	Round	3/16"	Standard	00000000	0000
				13/64"	0.2031"	3 5/8"	2.13"	High Helix	Round	13/64"	Standard	00000000	0000
				7/32"	0.2188"	3 3/4"	2.17"	High Helix	Round	7/32"	Standard	00000000	0000


				15/64"	0.2344"	3 7/8"	2.27"	High Helix	Round	15/64"	Standard	00000000	0000
				1/4"	0.25"	4"	2.37"	High Helix	Round	1/4"	Standard	00000000	0000
				17/64"	0.2656"	4 1/8"	2.47"	High Helix	Round	17/64"	Standard	00000000	0000
				9/32"	0.2813"	4 1/4"	2.52"	High Helix	Round	9/32"	Standard	00000000	0000
				19/64"	0.2969"	4 3/8"	2.62"	High Helix	Round	19/64"	Standard	00000000	0000
				5/16"	0.3125"	4 1/2"	2.71"	High Helix	Round	5/16"	Standard	00000000	0000
				21/64"	0.3281"	4 5/8"	2.82"	High Helix	Round	21/64"	Standard	00000000	0000
				11/32"	0.3438"	4 3/4"	2.92"	High Helix	Round	11/32"	Standard	00000000	00000
				3/8"	0.375"	5"	3.06"	High Helix	Round	3/8"	Standard	00000000	00000
				25/64"	0.3906"	5 1/8"	3.16"	High Helix	Round	25/64"	Standard	00000000	00000


				13/32"	0.4063"	5 1/4"	3.26"	High Helix	Round	13/32"	Standard	00000000	00000
				27/64"	0.4219"	5 3/8"	3.3"	High Helix	Round	27/64"	Standard	00000000	00000
				7/16"	0.4375"	5 1/2"	3.4"	High Helix	Round	7/16"	Standard	00000000	00000
29/64"				0.4531"	5 5/8"	3.5"	High Helix	Round	29/64"	Standard	00000000	00000
15/32"	0.4688"			5 3/4"	3.6"	High Helix	Round	15/32"	Standard	00000000	00000
1/2"	0.5"			6"	3.75"	High Helix	Round	1/2"	Standard	00000000	00000
5.2 mm	0.2047"			86 mm	52 mm	Parabolic	Round	5.2 mm	Split	0000000	0000
5.6 mm	0.2205"			93 mm	57 mm	Parabolic	Round	5.6 mm	Split	0000000	0000
8.2 mm	0.3228"			117 mm	75 mm	Parabolic	Round	8.2 mm	Split	0000000	00000
8.6 mm	0.3386"			125 mm	81 mm	Parabolic	Round	8.6 mm	Split	0000000	00000


13.5 mm	0.5315"			160 mm	108 mm	Parabolic	Round	13.5 mm	Split	0000000	00000
14.0 mm	0.5512"			160 mm	108 mm	Parabolic	Round	14 mm	Split	0000000	00000
14.5 mm	0.5709"			169 mm	114 mm	Parabolic	Round	14.5 mm	Split	0000000	00000
15.0 mm	0.5906"			169 mm	114 mm	Parabolic	Round	15 mm	Split	0000000	00000
15.5 mm	0.6102"			180 mm	119 mm	Parabolic	Round	15.5 mm	Split	00000000	00000
16.0 mm	0.6299"			178 mm	120 mm	Parabolic	Round	16 mm	Split	0000000	00000
16.5 mm	0.6496"			184 mm	125 mm	Parabolic	Round	16.5 mm	Split	0000000	00000
17.0 mm	0.6693"			184 mm	125 mm	Parabolic	Round	17 mm	Split	0000000	00000
17.5 mm	0.689"			191 mm	130 mm	Parabolic	Round	17.5 mm	Split	0000000	00000
80	0.0135"			3/4"	0.1"	High Helix	Round	0.0135"	Standard	00000000	0000


79	0.0145"			3/4"	0.1"	High Helix	Round	0.0145"	Standard	00000000	0000
78	0.016"			7/8"	0.16"	High Helix	Round	0.016"	Standard	00000000	0000
77	0.018"			7/8"	0.16"	High Helix	Round	0.018"	Standard	00000000	0000
76	0.02"			7/8"	0.15"	High Helix	Round	0.02"	Standard	00000000	0000
75	0.021"			1"	0.21"	High Helix	Round	0.021"	Standard	00000000	0000
74	0.0225"			1"	0.21"	High Helix	Round	0.0225"	Standard	00000000	0000
73	0.024"			1 1/8"	0.27"	High Helix	Round	0.024"	Standard	00000000	0000
72	0.025"			1 1/8"	0.27"	High Helix	Round	0.025"	Standard	00000000	0000
71	0.026"			1 1/4"	0.33"	High Helix	Round	0.026"	Standard	00000000	0000
70	0.028"	1 1/4"		0.33"	High Helix	Round	0.028"	Standard	00000000	0000
69	0.0292"	1 3/8"	0.45"	High Helix	Round	0.0292"	Standard	00000000	0000
68	0.031"	1 3/8"	0.45"	High Helix	Round	0.031"	Standard	00000000	0000
67	0.032"	1 3/8"	0.45"	High Helix	Round	0.032"	Standard	00000000	0000
66	0.033"	1 3/8"	0.45"	High Helix	Round	0.033"	Standard	00000000	0000
65	0.035"	1 1/2"	0.57"	High Helix	Round	0.035"	Standard	00000000	0000
64	0.036"	1 1/2"	0.57"	High Helix	Round	0.036"	Standard	00000000	0000
63	0.037"	1 1/2"	0.57"	High Helix	Round	0.037"	Standard	00000000	0000
62	0.038"	1 1/2"	0.56"	High Helix	Round	0.038"	Standard	00000000	0000
61	0.039"	1 5/8"	0.62"	High Helix	Round	0.039"	Standard	00000000	0000
60	0.04"	1 5/8"	0.62"	High Helix	Round	0.04"	Standard	00000000	0000
59	0.041"	1 5/8"	0.62"	High Helix	Round	0.041"	Standard	00000000	0000
58	0.042"	1 5/8"	0.62"	High Helix	Round	0.042"	Standard	00000000	0000
57	0.043"	1 3/4"	0.68"	High Helix	Round	0.043"	Standard	00000000	0000
56	0.0465"	1 3/4"	0.68"	High Helix	Round	0.0465"	Standard	00000000	0000
55	0.052"	1 7/8"	0.79"	High Helix	Round	0.052"	Standard	00000000	0000
54	0.055"	1 7/8"	0.79"	High Helix	Round	0.055"	Standard	00000000	0000
53	0.0595"	1 7/8"	0.78"	High Helix	Round	0.0595"	Standard	00000000	0000
52	0.0635"	1 7/8"	0.78"	High Helix	Round	0.0635"	Standard	00000000	0000
51	0.067"	2"	0.9"	High Helix	Round	0.067"	Standard	00000000	0000
50	0.07"	2"	0.89"	High Helix	Round	0.07"	Standard	00000000	0000
49	0.073"	2"	0.89"	High Helix	Round	0.073"	Standard	00000000	0000
48	0.076"	2"	0.88"	High Helix	Round	0.076"	Standard	00000000	0000
47	0.0785"	2"	0.88"	High Helix	Round	0.0785"	Standard	00000000	0000
46	0.081"	2 1/8"	1"	High Helix	Round	0.081"	Standard	00000000	0000
45	0.082"	2 1/8"	1"	High Helix	Round	0.082"	Standard	00000000	0000
44	0.086"	2 1/8"	0.99"	High Helix	Round	0.086"	Standard	00000000	0000
43	0.089"	2 1/4"	1.11"	High Helix	Round	0.089"	Standard	00000000	0000
42	0.0935"	2 1/4"	1.11"	High Helix	Round	0.0935"	Standard	00000000	0000
41	0.096"	2 3/8"	1.23"	High Helix	Round	0.096"	Standard	00000000	0000
40	0.098"	2 3/8"	1.22"	High Helix	Round	0.098"	Standard	00000000	0000
39	0.0995"	2 3/8"	1.22"	High Helix	Round	0.0995"	Standard	00000000	0000
38	0.1015"	2 1/2"	1.28"	High Helix	Round	0.1015"	Standard	00000000	0000
37	0.104"	2 1/2"	1.28"	High Helix	Round	0.104"	Standard	00000000	0000
36	0.1065"	2 1/2"	1.27"	High Helix	Round	0.1065"	Standard	00000000	0000
35	0.11"	2 5/8"	1.33"	High Helix	Round	0.11"	Standard	00000000	0000
33	0.113"	2 5/8"	1.33"	High Helix	Round	0.113"	Standard	00000000	0000
32	0.116"	2 3/4"	1.45"	High Helix	Round	0.116"	Standard	00000000	0000
31	0.12"	2 3/4"	1.44"	High Helix	Round	0.12"	Standard	00000000	0000
30	0.1285"	2 3/4"	1.43"	High Helix	Round	0.1285"	Standard	00000000	0000
29	0.136"	2 7/8"	1.54"	High Helix	Round	0.136"	Standard	00000000	0000
28	0.1405"	2 7/8"	1.53"	High Helix	Round	0.1405"	Standard	00000000	0000
27	0.144"	3"	1.65"	High Helix	Round	0.144"	Standard	00000000	0000
26	0.147"	3"	1.65"	High Helix	Round	0.147"	Standard	00000000	0000
25	0.1495"	3"	1.65"	High Helix	Round	0.1495"	Standard	00000000	0000
24	0.152"	3 1/8"	1.77"	High Helix	Round	0.152"	Standard	00000000	0000
23	0.154"	3 1/8"	1.76"	High Helix	Round	0.154"	Standard	00000000	0000
21	0.159"	3 1/4"	1.88"	High Helix	Round	0.159"	Standard	00000000	0000
20	0.161"	3 1/4"	1.88"	High Helix	Round	0.161"	Standard	00000000	0000
19	0.166"	3 1/4"	1.87"	High Helix	Round	0.166"	Standard	00000000	0000
18	0.1695"	3 1/4"	1.87"	High Helix	Round	0.1695"	Standard	00000000	0000
16	0.177"	3 3/8"	1.92"	High Helix	Round	0.177"	Standard	00000000	0000
13	0.185"	3 1/2"	2.03"	High Helix	Round	0.185"	Standard	00000000	0000
12	0.189"	3 1/2"	2.02"	High Helix	Round	0.189"	Standard	00000000	0000
11	0.191"	3 1/2"	2.02"	High Helix	Round	0.191"	Standard	00000000	0000
10	0.1935"	3 5/8"	2.14"	High Helix	Round	0.1935"	Standard	00000000	0000
9	0.196"	3 5/8"	2.14"	High Helix	Round	0.196"	Standard	00000000	0000
7	0.201"	3 5/8"	2.13"	High Helix	Round	0.201"	Standard	00000000	0000
6	0.204"	3 3/4"	2.19"	High Helix	Round	0.204"	Standard	00000000	0000
4	0.209"	3 3/4"	2.18"	High Helix	Round	0.209"	Standard	00000000	0000
3	0.213"	3 3/4"	2.18"	High Helix	Round	0.213"	Standard	00000000	0000
2	0.221"	3 7/8"	2.29"	High Helix	Round	0.221"	Standard	00000000	0000
1	0.228"	3 7/8"	2.28"	High Helix	Round	0.228"	Standard	00000000	0000