Letter Jobbers' Drill Bits

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System of Measurement

Length Class

Drill Bit Size

For Use On

Finish

Titanium Aluminum Nitride (TiAlN) Coated

Titanium Nitride (TiN) Coated

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Decimal Size Equivalent

Drill Bit Point Type

Point Angle

Material

Flute Direction

Shank Type

Shank Size

Sold As

Overall Length

Maximum Drilling Depth

Flute Type

Number of Flutes

Number of Pieces

115

Bit Style

Fluted

Drill Bit Sizes Included

1/16"-1/2" (increments of 1/64")

Export Control Classification Number (ECCN)

REACH

RoHS

DFARS Specialty Metals

Specifications Met

Container Type

398 Products

About Drill Bits

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

Material

High-Speed Steel

Versatile bits resist heat and wear to stay sharp

172 products

Cobalt Steel

Resist higher temperatures and last twice as long as high-speed steel

80 products

Material

Carbide-Tipped Steel

Stronger than cobalt and high-speed steel; stay sharp at high temperatures

50 products

Carbide

The hardest and most wear-resistant drill bits you can buy

96 products

High-Speed Steel Drill Bits

Jobbers' Length

Round Shank

Standard

Split

Our basic drill bits are also the most versatile. Cut holes in a variety of metals, from the softest aluminum to the hardest steel.

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.

Titanium Aluminum Nitride (TiAlN) Coated—The hardest and most wear-resistant coating, especially at high temperatures. These bits are best for hard and abrasive materials, such as iron and titanium.

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.	Type	Size	Drill Bit Point Type	Pkg. Qty.		Pkg.
Jobbers' Length





				Black Oxide
				A	0.234"	3 7/8"	2.27"	Round	0.234"	Split	1	2901A143	00000
				B	0.238"	4"	2.39"	Round	0.238"	Split	1	2901A144	0000
				C	0.242"	4"	2.38"	Round	0.242"	Split	1	2901A145	0000
				C	0.242"	4"	2.38"	Round	0.242"	Split	12	2901A539	00000
				D	0.246"	4"	2.38"	Round	0.246"	Split	1	2901A146	0000
				D	0.246"	4"	2.38"	Round	0.246"	Split	12	2901A541	00000
				E	0.25"	4"	2.37"	Round	1/4"	Split	1	2901A147	0000
				E	0.25"	4"	2.37"	Round	1/4"	Split	12	2901A542	00000
				F	0.257"	4 1/8"	2.49"	Round	0.257"	Split	1	2901A148	0000
				F	0.257"	4 1/8"	2.49"	Round	0.257"	Split	12	2901A543	00000
				G	0.261"	4 1/8"	2.48"	Round	0.261"	Split	1	2901A149	0000
				G	0.261"	4 1/8"	2.48"	Round	0.261"	Split	12	2901A544	00000
				H	0.266"	4 1/8"	2.47"	Round	0.266"	Split	1	2901A151	0000
				H	0.266"	4 1/8"	2.47"	Round	0.266"	Split	12	2901A545	00000
				I	0.272"	4 1/8"	2.46"	Round	0.272"	Split	1	2901A152	0000
				J	0.277"	4 1/8"	2.46"	Round	0.277"	Split	1	2901A153	0000
				K	0.281"	4 1/4"	2.51"	Round	0.281"	Split	1	2901A154	0000
				K	0.281"	4 1/4"	2.51"	Round	0.281"	Split	12	2901A546	00000
				L	0.29"	4 1/4"	2.5"	Round	0.29"	Split	1	2901A155	0000
				M	0.295"	4 3/8"	2.62"	Round	0.295"	Split	1	2901A156	0000
				M	0.295"	4 3/8"	2.62"	Round	0.295"	Split	6	2901A547	00000
				N	0.302"	4 3/8"	2.61"	Round	0.302"	Split	1	2901A157	0000
				N	0.302"	4 3/8"	2.61"	Round	0.302"	Split	6	2901A548	00000
				O	0.316"	4 1/2"	2.71"	Round	0.316"	Split	1	2901A158	0000
				O	0.316"	4 1/2"	2.71"	Round	0.316"	Split	6	2901A549	00000
				P	0.323"	4 5/8"	2.82"	Round	0.323"	Split	1	2901A159	0000
				P	0.323"	4 5/8"	2.82"	Round	0.323"	Split	6	2901A519	00000
				Q	0.332"	4 3/4"	2.94"	Round	0.332"	Split	1	2901A161	0000
				Q	0.332"	4 3/4"	2.94"	Round	0.332"	Split	6	2901A551	00000
				R	0.339"	4 3/4"	2.92"	Round	0.339"	Split	1	2901A162	0000
				R	0.339"	4 3/4"	2.92"	Round	0.339"	Split	6	2901A552	00000
				S	0.348"	4 7/8"	2.97"	Round	0.348"	Split	1	2901A163	0000
				S	0.348"	4 7/8"	2.97"	Round	0.348"	Split	6	2901A553	00000
				T	0.358"	4 7/8"	2.96"	Round	0.358"	Split	1	2901A164	00000
				U	0.368"	5"	3.07"	Round	0.368"	Split	1	2901A165	00000
				U	0.368"	5"	3.07"	Round	0.368"	Split	6	2901A554	00000
				V	0.377"	5"	3.06"	Round	0.377"	Split	1	2901A166	00000
				V	0.377"	5"	3.06"	Round	0.377"	Split	6	2901A555	00000
				W	0.386"	5 1/8"	3.17"	Round	0.386"	Split	1	2901A167	00000
				W	0.386"	5 1/8"	3.17"	Round	0.386"	Split	6	2901A556	00000
				X	0.397"	5 1/8"	3.15"	Round	0.397"	Split	1	2901A168	00000
				X	0.397"	5 1/8"	3.15"	Round	0.397"	Split	6	2901A557	00000
				Y	0.404"	5 1/4"	3.26"	Round	0.404"	Split	1	2901A169	00000
				Y	0.404"	5 1/4"	3.26"	Round	0.404"	Split	6	2901A558	00000
				Z	0.413"	5 1/4"	3.25"	Round	0.413"	Split	1	2901A171	00000
				Z	0.413"	5 1/4"	3.25"	Round	0.413"	Split	6	2901A569	00000



						Titanium Nitride (TiN) Coated
						A	0.234"	3 7/8"	2.27"	Round	0.234"	Split	1	3199A21	0000
						B	0.238"	4"	2.39"	Round	0.238"	Split	1	3199A22	0000
						C	0.242"	4"	2.38"	Round	0.242"	Split	1	3199A23	0000
						D	0.246"	4"	2.38"	Round	0.246"	Split	1	3199A24	0000
						E	0.25"	4"	2.37"	Round	1/4"	Split	1	3199A25	0000
						F	0.257"	4 1/8"	2.49"	Round	0.257"	Split	1	3199A26	00000
						G	0.261"	4 1/8"	2.48"	Round	0.261"	Split	1	3199A27	00000
						H	0.266"	4 1/8"	2.47"	Round	0.266"	Split	1	3199A28	00000
I						0.272"	4 1/8"	2.46"	Round	0.272"	Split	1	3199A29	00000
J	0.277"					4 1/8"	2.46"	Round	0.277"	Split	1	3199A31	00000
K	0.281"					4 1/4"	2.51"	Round	0.281"	Split	1	3199A32	00000
L	0.29"	4 1/4"				2.5"	Round	0.29"	Split	1	3199A33	00000
M	0.295"	4 3/8"	2.62"			Round	0.295"	Split	1	3199A34	00000
N	0.302"	4 3/8"	2.61"			Round	0.302"	Split	1	3199A35	00000
O	0.316"	4 1/2"	2.71"			Round	0.316"	Split	1	3199A36	00000
P	0.323"	4 5/8"	2.82"			Round	0.323"	Split	1	3199A37	00000
Q	0.332"	4 3/4"	2.94"			Round	0.332"	Split	1	3199A38	00000
R	0.339"	4 3/4"	2.92"			Round	0.339"	Split	1	3199A39	00000
S	0.348"	4 7/8"	2.97"			Round	0.348"	Split	1	3199A41	00000
T	0.358"	4 7/8"	2.96"			Round	0.358"	Split	1	3199A42	00000
U	0.368"	5"	3.07"			Round	0.368"	Split	1	3199A43	00000
V	0.377"	5"	3.06"			Round	0.377"	Split	1	3199A44	00000
W	0.386"	5 1/8"	3.17"			Round	0.386"	Split	1	3199A45	00000
X	0.397"	5 1/8"	3.15"			Round	0.397"	Split	1	3199A46	00000
Y	0.404"	5 1/4"	3.26"			Round	0.404"	Split	1	3199A47	00000
Z	0.413"	5 1/4"	3.25"			Round	0.413"	Split	1	3199A48	00000



		Titanium Aluminum Nitride (TiAlN) Coated
		A	0.234"			3 7/8"	2.27"	Round	0.234"	Split	1	3180A21	00000
		B	0.238"			4"	2.39"	Round	0.238"	Split	1	3180A22	00000
		C	0.242"			4"	2.38"	Round	0.242"	Split	1	3180A23	00000
		D	0.246"			4"	2.38"	Round	0.246"	Split	1	3180A24	00000
		E	0.25"			4"	2.37"	Round	1/4"	Split	1	3180A25	00000
		F	0.257"			4 1/8"	2.49"	Round	0.257"	Split	1	3180A26	00000
		G	0.261"			4 1/8"	2.48"	Round	0.261"	Split	1	3180A27	00000
		H	0.266"			4 1/8"	2.47"	Round	0.266"	Split	1	3180A28	00000
		I	0.272"			4 1/8"	2.46"	Round	0.272"	Split	1	3180A29	00000
		J	0.277"			4 1/8"	2.46"	Round	0.277"	Split	1	3180A31	00000
		K	0.281"			4 1/4"	2.51"	Round	0.281"	Split	1	3180A32	00000
		L	0.29"			4 1/4"	2.5"	Round	0.29"	Split	1	3180A33	00000
		M	0.295"			4 3/8"	2.62"	Round	0.295"	Split	1	3180A34	00000
		N	0.302"			4 3/8"	2.61"	Round	0.302"	Split	1	3180A35	00000
		O	0.316"			4 1/2"	2.71"	Round	0.316"	Split	1	3180A36	00000
		P	0.323"			4 5/8"	2.82"	Round	0.323"	Split	1	3180A37	00000
		Q	0.332"			4 3/4"	2.94"	Round	0.332"	Split	1	3180A38	00000
		R	0.339"			4 3/4"	2.92"	Round	0.339"	Split	1	3180A39	00000
		S	0.348"			4 7/8"	2.97"	Round	0.348"	Split	1	3180A41	00000
		T	0.358"			4 7/8"	2.96"	Round	0.358"	Split	1	3180A42	00000
		U	0.368"			5"	3.07"	Round	0.368"	Split	1	3180A43	00000
		V	0.377"			5"	3.06"	Round	0.377"	Split	1	3180A44	00000
		W	0.386"			5 1/8"	3.17"	Round	0.386"	Split	1	3180A45	00000
		X	0.397"			5 1/8"	3.15"	Round	0.397"	Split	1	3180A46	00000
		Y	0.404"			5 1/4"	3.26"	Round	0.404"	Split	1	3180A47	00000
		Z	0.413"			5 1/4"	3.25"	Round	0.413"	Split	1	3180A48	00000



						Uncoated
						A	0.234"	3 7/8"	2.27"	Round	0.234"	Standard	1	30595A31	0000
						B	0.238"	4"	2.39"	Round	0.238"	Standard	1	30595A32	0000
				C		0.242"	4"	2.38"	Round	0.242"	Standard	1	30595A33	0000
				D	0.246"	4"	2.38"	Round	0.246"	Standard	1	30595A34	0000
				E	0.25"	4"	2.37"	Round	1/4"	Standard	1	30595A35	0000
				F	0.257"	4 1/8"	2.49"	Round	0.257"	Standard	1	30595A36	0000
				F	0.257"	4 1/8"	2.49"	Round	0.257"	Standard	12	30595A71	00000
				G	0.261"	4 1/8"	2.48"	Round	0.261"	Standard	1	30595A37	0000
				G	0.261"	4 1/8"	2.48"	Round	0.261"	Standard	12	30595A72	00000
				H	0.266"	4 1/8"	2.47"	Round	0.266"	Standard	1	30595A38	0000
				I	0.272"	4 1/8"	2.46"	Round	0.272"	Standard	1	30595A39	0000
				I	0.272"	4 1/8"	2.46"	Round	0.272"	Standard	12	30595A73	00000
				J	0.277"	4 1/8"	2.46"	Round	0.277"	Standard	1	30595A41	0000
				K	0.281"	4 1/4"	2.51"	Round	0.281"	Standard	1	30595A42	0000
				L	0.29"	4 1/4"	2.5"	Round	0.29"	Standard	1	30595A43	0000
				M	0.295"	4 3/8"	2.62"	Round	0.295"	Standard	1	30595A44	0000
				N	0.302"	4 3/8"	2.61"	Round	0.302"	Standard	1	30595A45	0000
				O	0.316"	4 1/2"	2.71"	Round	0.316"	Standard	1	30595A46	0000
				O	0.316"	4 1/2"	2.71"	Round	0.316"	Standard	6	30595A74	00000
				P	0.323"	4 5/8"	2.82"	Round	0.323"	Standard	1	30595A47	0000
				P	0.323"	4 5/8"	2.82"	Round	0.323"	Standard	6	30595A75	00000
				Q	0.332"	4 3/4"	2.94"	Round	0.332"	Standard	1	30595A48	0000
				Q	0.332"	4 3/4"	2.94"	Round	0.332"	Standard	6	30595A76	00000
				R	0.339"	4 3/4"	2.92"	Round	0.339"	Standard	1	30595A49	0000
				R	0.339"	4 3/4"	2.92"	Round	0.339"	Standard	6	30595A77	00000
				S	0.348"	4 7/8"	2.97"	Round	0.348"	Standard	1	30595A51	0000
				S	0.348"	4 7/8"	2.97"	Round	0.348"	Standard	6	30595A78	00000
				T	0.358"	4 7/8"	2.96"	Round	0.358"	Standard	1	30595A52	0000
				U	0.368"	5"	3.07"	Round	0.368"	Standard	1	30595A53	0000
				V	0.377"	5"	3.06"	Round	0.377"	Standard	1	30595A54	0000
				W	0.386"	5 1/8"	3.17"	Round	0.386"	Standard	1	30595A55	0000
W				0.386"	5 1/8"	3.17"	Round	0.386"	Standard	6	30595A79	00000
X	0.397"			5 1/8"	3.15"	Round	0.397"	Standard	1	30595A56	00000
Y	0.404"			5 1/4"	3.26"	Round	0.404"	Standard	1	30595A57	00000
Z	0.413"			5 1/4"	3.25"	Round	0.413"	Standard	1	30595A58	00000

Cobalt Steel Drill Bits

Jobbers' Length

Round Shank

Split

Tough and wear resistant, cobalt steel bits last at least twice as long as high-speed steel. They can also run up to 25% faster at higher temperatures without being damaged on hard materials, such as nickel.

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

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—Polished to eject chips, these are also known as bright finish bits.

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





				Titanium Nitride (TiN) Coated
				A	0.234"	3 7/8"	2.63"	Round	0.234"	Split	27995A839	000000
				B	0.238"	4"	2.75"	Round	0.238"	Split	27995A841	00000
				C	0.242"	4"	2.75"	Round	0.242"	Split	27995A842	00000
				D	0.246"	4"	2.75"	Round	0.246"	Split	27995A843	00000
				E	0.25"	4"	2.75"	Round	1/4"	Split	3069A95	00000
				F	0.257"	4 1/8"	2.88"	Round	0.257"	Split	27995A844	00000
				G	0.261"	4 1/8"	2.88"	Round	0.261"	Split	27995A845	00000
				H	0.266"	4 1/8"	2.88"	Round	0.266"	Split	27995A846	00000
				I	0.272"	4 1/8"	2.88"	Round	0.272"	Split	27995A847	00000
				J	0.277"	4 1/8"	2.88"	Round	0.277"	Split	27995A848	00000
				K	0.281"	4 1/4"	2.94"	Round	0.281"	Split	27995A849	00000
				L	0.29"	4 1/4"	2.94"	Round	0.29"	Split	27995A851	00000
				M	0.295"	4 3/8"	3.06"	Round	0.295"	Split	27995A852	00000
				N	0.302"	4 3/8"	3.06"	Round	0.302"	Split	27995A853	00000
				O	0.316"	4 1/2"	3.19"	Round	0.316"	Split	27995A854	00000
				P	0.323"	4 5/8"	3.31"	Round	0.323"	Split	27995A855	00000
				Q	0.332"	4 3/4"	3.44"	Round	0.332"	Split	27995A856	00000
				R	0.339"	4 3/4"	3.44"	Round	0.339"	Split	27995A857	00000
				S	0.348"	4 7/8"	3.5"	Round	0.348"	Split	27995A858	00000
				T	0.358"	4 7/8"	3.5"	Round	0.358"	Split	27995A859	00000
				U	0.368"	5"	3.63"	Round	0.368"	Split	27995A861	00000
				V	0.377"	5"	3.63"	Round	0.377"	Split	27995A862	00000
				W	0.386"	5 1/8"	3.75"	Round	0.386"	Split	27995A863	00000
				X	0.397"	5 1/8"	3.75"	Round	0.397"	Split	27995A864	00000
				Y	0.404"	5 1/4"	3.88"	Round	0.404"	Split	27995A865	00000
				Z	0.413"	5 1/4"	3.88"	Round	0.413"	Split	27995A866	00000



						Uncoated
						A	0.234"	3 7/8"	2.27"	Round	0.234"	Split	3069A51	0000
						B	0.238"	4"	2.39"	Round	0.238"	Split	3069A52	0000
						C	0.242"	4"	2.38"	Round	0.242"	Split	3069A53	0000
						D	0.246"	4"	2.38"	Round	0.246"	Split	3069A54	0000
						E	0.25"	4"	2.37"	Round	1/4"	Split	3069A55	0000
						F	0.257"	4 1/8"	2.49"	Round	0.257"	Split	3069A56	0000
						G	0.261"	4 1/8"	2.48"	Round	0.261"	Split	3069A57	0000
						H	0.266"	4 1/8"	2.47"	Round	0.266"	Split	3069A58	0000
						I	0.272"	4 1/8"	2.46"	Round	0.272"	Split	3069A59	0000
						J	0.277"	4 1/8"	2.46"	Round	0.277"	Split	3069A61	0000
						K	0.281"	4 1/4"	2.51"	Round	0.281"	Split	3069A62	0000
						L	0.29"	4 1/4"	2.5"	Round	0.29"	Split	3069A63	00000
						M	0.295"	4 3/8"	2.62"	Round	0.295"	Split	3069A64	00000
						N	0.302"	4 3/8"	2.61"	Round	0.302"	Split	3069A65	00000
						O	0.316"	4 1/2"	2.71"	Round	0.316"	Split	3069A66	00000
						P	0.323"	4 5/8"	2.82"	Round	0.323"	Split	3069A67	00000
						Q	0.332"	4 3/4"	2.94"	Round	0.332"	Split	3069A68	00000
						R	0.339"	4 3/4"	2.92"	Round	0.339"	Split	3069A69	00000
						S	0.348"	4 7/8"	2.97"	Round	0.348"	Split	3069A71	00000
						T	0.358"	4 7/8"	2.96"	Round	0.358"	Split	3069A72	00000
						U	0.368"	5"	3.07"	Round	0.368"	Split	3069A73	00000
						V	0.377"	5"	3.06"	Round	0.377"	Split	3069A74	00000
						W	0.386"	5 1/8"	3.17"	Round	0.386"	Split	3069A75	00000
						X	0.397"	5 1/8"	3.15"	Round	0.397"	Split	3069A76	00000
						Y	0.404"	5 1/4"	3.26"	Round	0.404"	Split	3069A77	00000
						Z	0.413"	5 1/4"	3.25"	Round	0.413"	Split	3069A78	00000

High-Speed Steel Drill Bit Sets

Our basic drill bits are also the most versatile. Cut holes in a variety of metals, from the softest aluminum to the hardest steel.

Jobbers' Length About Jobbers' Length

Image of Product. Front orientation. Drill Bits. High-Speed Steel Drill Bit Sets, Jobbers' Length.


Split	Standard

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.

	Drill Bit Sizes Included	System of Measurement	Drill Bit Point Style	Specs. Met	Container Type		Each
Black Oxide


	26	A-Z	Letter Size	Split Point	NAS907 Type B	Metal Case	8907A15	0000000
	72	3 each of sizes A-T, 2 each of sizes U-Z	Letter Size	Split Point	NAS907 Type B	Metal Drawer Cabinet	8802A12	000000
	115	1/16"-1/2" (increments of 1/64"), 60-53 ga, 52-1 ga, A-Z,	Inch, Wire Gauge, Letter Size	Split Standard	NAS907 Type B	Metal Case	8834A71	000000
	115	1/16"-1/2" (increments of 1/64"), 60-1 ga, A-Z	Inch, Wire Gauge, Letter Size	Standard Point	ASME B94.11M, DIN 338	Metal Case	8834A12	000000

	Titanium Aluminum Nitride (TiAlN) Coated


			26	A-Z	Letter Size	Split Point	NAS907 Type B	Metal Case	2572N16	000000
			72	3 each of sizes A-T, 2 each of sizes U-Z	Letter Size	Split Point	NAS907 Type B	Metal Drawer Cabinet	2572N17	000000

			Titanium Nitride (TiN) Coated


					26	A-Z	Letter Size	Split Point	NAS907 Type B	Metal Case	31555A55	000000
					72	3 each of sizes A-T, 2 each of sizes U-Z	Letter Size	Split Point	NAS907 Type B	Metal Drawer Cabinet	31555A59	000000
					115	1/16"-1/2" (increments of 1/64"), 60-53 ga, 52-1 ga, A-Z,	Inch, Wire Gauge, Letter Size	Split Standard	NAS907 Type B	Metal Case	29585A8	000000

					Uncoated


							26	A-Z	Letter Size	Standard Point	—	Metal Case	8875A35	000000
							72	3 each of sizes A-T, 2 each of sizes U-Z	Letter Size	Split Point	NAS907 Type A	Metal Drawer Cabinet	8875A17	000000
							115	1/16"-1/2" (increments of 1/64"), 60-1 ga, A-Z	Inch, Wire Gauge, Letter Size	Standard Point	ASME B94.11M, DIN 338	Metal Case	29585A7	000000

Carbide Drill Bits

Jobbers' Length

Round Shank

The hardest and most wear-resistant drill bits you can buy. Carbide bits stay sharp at high temperatures and faster speeds for the best performance on hard and difficult-to-machine materials. They last 10 to 20 times longer than their closest alternative, cobalt steel. Carbide can be brittle, however, so these bits require a rigid machine tool holder to prevent breakage and should not be used in hand drilling applications.

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

Titanium Nitride (TiN) Coated—Drill at higher speeds and last longer than uncoated bits, especially on materials like hardened steel, iron, and stainless steel.

Uncoated—Excellent for a range of materials but won't last as long as coated bits.

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





				Titanium Nitride (TiN) Coated
				A	0.234"	3 1/4"	2"	Round	0.234"	Four Facet	29195A011	000000
				B	0.238"	3 1/4"	2"	Round	0.238"	Four Facet	29195A012	00000
				C	0.242"	3 1/4"	2"	Round	0.242"	Four Facet	29195A013	00000
				D	0.246"	3 1/4"	2"	Round	0.246"	Four Facet	29195A014	00000
				F	0.257"	3 1/2"	2"	Round	0.257"	Four Facet	29195A015	00000
				G	0.261"	3 1/2"	2"	Round	0.261"	Four Facet	29195A016	00000
				H	0.266"	3 1/2"	2.13"	Round	0.266"	Four Facet	29195A017	00000
				I	0.272"	3 1/2"	2.13"	Round	0.272"	Four Facet	29195A018	00000
				J	0.277"	3 1/2"	2.13"	Round	0.277"	Four Facet	29195A019	00000
				K	0.281"	3 1/2"	2.13"	Round	0.281"	Four Facet	29195A021	00000
				L	0.29"	3 1/2"	2.13"	Round	0.29"	Four Facet	29195A022	00000
				N	0.302"	3 3/4"	2.38"	Round	0.302"	Four Facet	29195A023	00000
				O	0.316"	3 3/4"	2.38"	Round	0.316"	Four Facet	29195A024	00000
				P	0.323"	4"	2.38"	Round	0.323"	Four Facet	29195A025	00000
				Q	0.332"	4"	2.5"	Round	0.332"	Four Facet	29195A026	00000
				R	0.339"	4"	2.5"	Round	0.339"	Four Facet	29195A027	00000
				S	0.348"	4"	2.5"	Round	0.348"	Four Facet	29195A028	00000
				U	0.368"	4 1/4"	2.75"	Round	0.368"	Four Facet	29195A029	00000
				V	0.377"	4 1/4"	2.75"	Round	0.377"	Four Facet	29195A077	00000
				W	0.386"	4 1/2"	2.88"	Round	0.386"	Four Facet	29195A078	00000
				X	0.397"	4 1/2"	2.88"	Round	0.397"	Four Facet	29195A079	00000



						Uncoated
						A	0.234"	3 1/4"	1.6"	Round	0.234"	Four Facet	29195A31	00000
						B	0.238"	3 1/4"	1.6"	Round	0.238"	Four Facet	29195A32	00000
						C	0.242"	3 1/4"	1.6"	Round	0.242"	Four Facet	29195A33	00000
						D	0.246"	3 1/4"	1.6"	Round	0.246"	Four Facet	29195A34	00000
						E	0.25"	3 1/4"	1.6"	Round	1/4"	Four Facet	29195A35	00000
						F	0.257"	3 1/2"	1.6"	Round	0.257"	Four Facet	29195A36	00000
						G	0.261"	3 1/2"	1.7"	Round	0.261"	Four Facet	29195A37	00000
						H	0.266"	3 1/2"	1.7"	Round	0.266"	Four Facet	29195A38	00000
						I	0.272"	3 1/2"	1.7"	Round	0.272"	Four Facet	29195A39	00000
						J	0.277"	3 1/2"	1.7"	Round	0.277"	Four Facet	29195A41	00000
						K	0.281"	3 1/2"	1.7"	Round	0.281"	Four Facet	29195A42	00000
						L	0.29"	3 1/2"	1.7"	Round	0.29"	Four Facet	29195A43	00000
						M	0.295"	3 3/4"	1.9"	Round	0.295"	Four Facet	29195A44	00000
						N	0.302"	3 3/4"	1.9"	Round	0.302"	Four Facet	29195A45	00000
						O	0.316"	3 3/4"	1.9"	Round	0.316"	Four Facet	29195A46	00000
						P	0.323"	4"	1.9"	Round	0.323"	Four Facet	29195A47	00000
						Q	0.332"	4"	2"	Round	0.332"	Four Facet	29195A48	00000
						R	0.339"	4"	2"	Round	0.339"	Four Facet	29195A49	00000
						S	0.348"	4"	2"	Round	0.348"	Four Facet	29195A51	00000
						T	0.358"	4 1/4"	2.2"	Round	0.358"	Four Facet	29195A52	00000
						U	0.368"	4 1/4"	2.2"	Round	0.368"	Four Facet	29195A53	00000
						V	0.377"	4 1/4"	2.2"	Round	0.377"	Four Facet	29195A54	00000
						W	0.386"	4 1/2"	2.3"	Round	0.386"	Four Facet	29195A55	00000
						X	0.397"	4 1/2"	2.3"	Round	0.397"	Four Facet	29195A56	00000
						Y	0.404"	4 1/2"	2.3"	Round	0.404"	Four Facet	29195A57	00000
						Z	0.413"	4 1/2"	2.3"	Round	0.413"	Four Facet	29195A58	00000

Cobalt Steel Drill Bit Sets

Jobbers' Length About Jobbers' Length


	Split

These bits have the balance of rigidity and length needed for most applications.

Uncoated—Polished to eject chips, these are also known as bright finish bits.

	Drill Bit Sizes Included	System of Measurement	Drill Bit Point Style	Specs. Met	Container Type		Each
Uncoated


	26	A-Z	Letter Size	Split Point	NAS907 Type J	Metal Case	8856A55	0000000
	115	1/16"-1/2" (increments of 1/64"), 60-53 ga, 52-1 ga, A-Z,	Inch, Wire Gauge, Letter Size	Split Standard	NAS907 Type J	Metal Case	3048A46	000000

Carbide-Tipped Drill Bits

Jobbers' Length

Round Shank


Standard	Split

Performance similar to solid carbide but at a lower price point. Like carbide bits, these are stronger than cobalt and high-speed steel and maintain their sharp edges when drilling abrasive material. However, when drilling tough metals like iron and hardened steel, upgrade to carbide for longer life.

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

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





				Uncoated
				A	0.234"	3 7/8"	2.1"	Round	0.234"	Standard	2940A511	000000
				A	0.234"	3 7/8"	2.3"	Round	0.234"	Split	31575A511	00000
				B	0.238"	4"	2.1"	Round	0.238"	Standard	2940A512	00000
				B	0.238"	4"	2.4"	Round	0.238"	Split	31575A512	00000
				C	0.242"	4"	2.1"	Round	0.242"	Standard	2940A513	00000
				C	0.242"	4"	2.4"	Round	0.242"	Split	31575A513	00000
				D	0.246"	4"	2.1"	Round	0.246"	Standard	2940A514	00000
				D	0.246"	4"	2.4"	Round	0.246"	Split	31575A514	00000
				F	0.257"	4 1/8"	2.4"	Round	0.257"	Standard	2940A515	00000
				F	0.257"	4 1/8"	2.8"	Round	0.257"	Split	31575A516	00000
				G	0.261"	4 1/8"	2.4"	Round	0.261"	Standard	2940A516	00000
				G	0.261"	4 1/8"	2.5"	Round	0.261"	Split	31575A517	00000
				H	0.266"	4 1/8"	2.4"	Round	0.266"	Standard	2940A517	00000
				H	0.266"	4 1/8"	2.5"	Round	0.266"	Split	31575A518	00000
				I	0.272"	4 1/8"	2.4"	Round	0.272"	Standard	2940A518	00000
				I	0.272"	4 1/8"	2.5"	Round	0.272"	Split	31575A519	00000
				J	0.277"	4 1/8"	2.4"	Round	0.277"	Standard	2940A519	00000
				J	0.277"	4 1/8"	2.5"	Round	0.277"	Split	31575A521	00000
				K	0.281"	4 1/4"	2.4"	Round	0.281"	Standard	2940A521	00000
				K	0.281"	4 1/4"	2.5"	Round	0.281"	Split	31575A522	00000
				L	0.29"	4 1/4"	2.5"	Round	0.29"	Split	31575A523	00000
				L	0.29"	4 1/4"	2.6"	Round	0.29"	Standard	2940A522	00000
				M	0.295"	4 3/8"	2.6"	Round	0.295"	Standard	2940A523	00000
				M	0.295"	4 3/8"	2.6"	Round	0.295"	Split	31575A524	00000
				N	0.302"	4 3/8"	2.6"	Round	0.302"	Standard	2940A524	00000
				N	0.302"	4 3/8"	2.6"	Round	0.302"	Split	31575A525	00000
				O	0.316"	4 1/2"	2.6"	Round	0.316"	Standard	2940A525	00000
				O	0.316"	4 1/2"	2.7"	Round	0.316"	Split	31575A526	00000
				P	0.323"	4 5/8"	2.8"	Round	0.323"	Standard	2940A526	00000
				P	0.323"	4 5/8"	2.8"	Round	0.323"	Split	31575A527	00000
				Q	0.332"	4 3/4"	2.8"	Round	0.332"	Standard	2940A527	00000
				Q	0.332"	4 3/4"	2.9"	Round	0.332"	Split	31575A528	00000
				R	0.339"	4 3/4"	2.8"	Round	0.339"	Standard	2940A528	00000
				R	0.339"	4 3/4"	2.9"	Round	0.339"	Split	31575A529	00000
				S	0.348"	4 7/8"	2.9"	Round	0.348"	Standard	2940A529	00000
				S	0.348"	4 7/8"	3"	Round	0.348"	Split	31575A531	00000
				T	0.358"	4 7/8"	2.9"	Round	0.358"	Standard	2940A531	00000
				T	0.358"	4 7/8"	3"	Round	0.358"	Split	31575A532	00000
				U	0.368"	5"	2.9"	Round	0.368"	Standard	2940A532	00000
				U	0.368"	5"	3.1"	Round	0.368"	Split	31575A533	00000
				V	0.377"	5"	2.9"	Round	0.377"	Standard	2940A533	00000
				V	0.377"	5"	3.1"	Round	0.377"	Split	31575A534	00000
				W	0.386"	5 1/8"	3"	Round	0.386"	Standard	2940A534	00000
				W	0.386"	5 1/8"	3.2"	Round	0.386"	Split	31575A535	00000
				X	0.397"	5 1/8"	3"	Round	0.397"	Standard	2940A535	00000
				X	0.397"	5 1/8"	3.2"	Round	0.397"	Split	31575A536	00000
				Y	0.404"	5 1/4"	3"	Round	0.404"	Standard	2940A536	00000
				Y	0.404"	5 1/4"	3.3"	Round	0.404"	Split	31575A537	00000
				Z	0.413"	5 1/4"	3.2"	Round	0.413"	Standard	2940A537	00000
				Z	0.413"	5 1/4"	3.3"	Round	0.413"	Split	31575A538	00000

Chip-Clearing Cobalt Steel Drill Bits

Jobbers' Length

Parabolic Flute

Round Shank

Split

Avoid clogs and dissipate heat with cobalt bits that last at least twice as long as high-speed steel. The flutes clear chips to improve coolant flow and prevent damage to the bit and the hole. They also speed up drilling since you don't have to stop to clear the bit manually.

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

Uncoated—Polished to eject chips, these are 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





				Uncoated
				A	0.234"	3 5/8"	2.24"	Parabolic	Round	0.234"	Split	2771N11	00000
				B	0.238"	4"	2.48"	Parabolic	Round	0.238"	Split	2771N12	0000
				C	0.242"	4"	2.48"	Parabolic	Round	0.242"	Split	2771N13	0000
				D	0.246"	4"	2.48"	Parabolic	Round	0.246"	Split	2771N14	0000
				E	0.25"	4"	2.48"	Parabolic	Round	1/4"	Split	2771N15	0000
				F	0.257"	4"	2.48"	Parabolic	Round	0.257"	Split	2771N16	0000
				G	0.261"	4"	2.48"	Parabolic	Round	0.261"	Split	2771N17	0000
				H	0.266"	4 1/4"	2.72"	Parabolic	Round	0.266"	Split	2771N18	0000
				I	0.272"	4 1/4"	2.72"	Parabolic	Round	0.272"	Split	2771N19	0000
				J	0.277"	4 1/4"	2.72"	Parabolic	Round	0.277"	Split	2771N21	0000
				K	0.281"	4 1/4"	2.72"	Parabolic	Round	0.281"	Split	2771N22	0000
				L	0.29"	4 1/4"	2.72"	Parabolic	Round	0.29"	Split	2771N23	0000
				M	0.295"	4 1/4"	2.72"	Parabolic	Round	0.295"	Split	2771N24	00000
				N	0.302"	4 5/8"	2.95"	Parabolic	Round	0.302"	Split	2771N25	00000
				O	0.316"	4 5/8"	2.95"	Parabolic	Round	0.316"	Split	2771N26	00000
				P	0.323"	4 5/8"	2.95"	Parabolic	Round	0.323"	Split	2771N778	00000
				Q	0.332"	4 5/8"	2.95"	Parabolic	Round	0.332"	Split	2771N28	00000
				R	0.339"	4 7/8"	3.19"	Parabolic	Round	0.339"	Split	2771N29	00000
				S	0.348"	4 7/8"	3.19"	Parabolic	Round	0.348"	Split	2771N31	00000
				T	0.358"	4 7/8"	3.19"	Parabolic	Round	0.358"	Split	2771N32	00000
				U	0.368"	4 7/8"	3.19"	Parabolic	Round	0.368"	Split	2771N33	00000
				V	0.377"	4 7/8"	3.43"	Parabolic	Round	0.377"	Split	2771N34	00000
				W	0.386"	5 1/4"	3.43"	Parabolic	Round	0.386"	Split	2771N35	00000
				X	0.397"	5 1/4"	3.43"	Parabolic	Round	0.397"	Split	2771N36	00000
				Y	0.404"	5 1/4"	3.43"	Parabolic	Round	0.404"	Split	2771N37	00000
				Z	0.413"	5 1/4"	3.43"	Parabolic	Round	0.413"	Split	2771N38	00000

Smooth-Finish Carbide Drill Bits

Jobbers' Length

Round Shank

Split

With more cutting edges than other drill bits, these cut continuously and consistently for a smoother finish. They also stay centered to produce holes that are straighter and more accurate. However, since there’s less space between the cutting edges, they don’t clear chips as quickly. Made of carbide, these are the hardest and most wear-resistant drill bits you can buy. They stay sharp at high temperatures and faster speeds for the best performance on hard and difficult-to-machine materials. Carbide can be brittle, however, so these bits require a rigid machine tool holder to prevent breakage and should not be used in hand drilling applications.

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

Uncoated—Excellent for a range of materials but won't last as long as coated bits.

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





				Uncoated
				A	0.234"	3 1/4"	1.6"	Round	0.234"	Split	2792A51	000000
				B	0.238"	3 1/4"	1.6"	Round	0.238"	Split	2792A52	00000
				C	0.242"	3 1/4"	1.6"	Round	0.242"	Split	2792A53	00000
				D	0.246"	3 1/4"	1.6"	Round	0.246"	Split	2792A54	00000
				E	0.25"	3 1/4"	1.6"	Round	1/4"	Split	2792A55	00000
				F	0.257"	3 1/2"	1.6"	Round	0.257"	Split	2792A56	00000
				G	0.261"	3 1/2"	1.7"	Round	0.261"	Split	2792A57	00000
				H	0.266"	3 1/2"	1.7"	Round	0.266"	Split	2792A58	00000
				I	0.272"	3 1/2"	1.7"	Round	0.272"	Split	2792A59	00000
				J	0.277"	3 1/2"	1.7"	Round	0.277"	Split	2792A61	00000
				K	0.281"	3 1/2"	1.7"	Round	0.281"	Split	2792A62	00000
				L	0.29"	3 1/2"	1.7"	Round	0.29"	Split	2792A63	00000
				M	0.295"	3 3/4"	1.9"	Round	0.295"	Split	2792A64	00000
				N	0.302"	3 3/4"	1.9"	Round	0.302"	Split	2792A65	00000
				O	0.316"	3 3/4"	1.9"	Round	0.316"	Split	2792A66	00000
				P	0.323"	4"	1.9"	Round	0.323"	Split	2792A67	00000
				Q	0.332"	4"	2"	Round	0.332"	Split	2792A68	00000
				R	0.339"	4"	2"	Round	0.339"	Split	2792A69	00000
				S	0.348"	4"	2"	Round	0.348"	Split	2792A71	00000
				T	0.358"	4 1/4"	2.2"	Round	0.358"	Split	2792A72	00000
				U	0.368"	4 1/4"	2.2"	Round	0.368"	Split	2792A73	00000
				V	0.377"	4 1/4"	2.2"	Round	0.377"	Split	2792A74	000000
				W	0.386"	4 1/2"	2.3"	Round	0.388"	Split	2792A75	000000
				X	0.397"	4 1/2"	2.3"	Round	0.397"	Split	2792A76	000000
				Y	0.404"	4 1/2"	2.3"	Round	0.404"	Split	2792A77	000000
				Z	0.413"	4 1/2"	2.3"	Round	0.413"	Split	2792A78	000000

High-Speed Steel Drill Bits for Plastic

The precision-ground, 60° point penetrates gradually to prevent cracking and chipping. It also reduces heat that can deform the material. Use these bits for drilling into acrylic, laminate, and other plastics. They're made of wear-resistant high-speed steel.

Jobbers' Length About Jobbers' Length

					Shank
	Drill Bit Size	Decimal Size Equiv.	Overall Lg.	Max. Drilling Dp.	Type	Size	Point Angle	Drill Bit Point Type		Each
Uncoated


		A	0.234"	3 7/8"	1.87"	Round	0.234"	60°	Standard	27465A211	00000
		B	0.238"	4"	2"	Round	0.238"	60°	Standard	27465A212	0000
		C	0.242"	4"	2"	Round	0.242"	60°	Standard	27465A213	0000
		D	0.246"	4"	2"	Round	0.246"	60°	Standard	27465A214	0000
		E	0.25"	4"	2"	Round	1/4"	60°	Standard	27465A215	0000
		F	0.257"	4 1/8"	2.12"	Round	0.257"	60°	Standard	27465A216	0000
		G	0.261"	4 1/8"	2.12"	Round	0.261"	60°	Standard	27465A217	0000
		H	0.266"	4 1/8"	2.12"	Round	0.266"	60°	Standard	27465A218	0000
		I	0.272"	4 1/8"	2.12"	Round	0.272"	60°	Standard	27465A219	0000
		J	0.277"	4 1/8"	2.12"	Round	0.277"	60°	Standard	27465A221	00000
		K	0.281"	4 1/4"	2.12"	Round	0.281"	60°	Standard	27465A222	00000
		L	0.29"	4 1/4"	2.12"	Round	0.29"	60°	Standard	27465A223	0000
		M	0.295"	4 3/8"	2.25"	Round	0.295"	60°	Standard	27465A224	00000
		N	0.302"	4 3/8"	2.25"	Round	0.302"	60°	Standard	27465A225	00000
		O	0.316"	4 1/2"	2.25"	Round	0.316"	60°	Standard	27465A226	00000
		P	0.323"	4 5/8"	2.5"	Round	0.323"	60°	Standard	27465A227	00000
		Q	0.332"	4 3/4"	2.62"	Round	0.332"	60°	Standard	27465A228	00000
		R	0.339"	4 3/4"	2.62"	Round	0.339"	60°	Standard	27465A229	00000
		S	0.348"	4 7/8"	2.62"	Round	0.348"	60°	Standard	27465A231	00000
		T	0.358"	4 7/8"	2.62"	Round	0.358"	60°	Standard	27465A232	00000
		U	0.368"	5"	2.75"	Round	0.368"	60°	Standard	27465A233	00000
		V	0.377"	5"	2.75"	Round	0.377"	60°	Standard	27465A234	00000
		W	0.386"	5 1/8"	2.87"	Round	0.386"	60°	Standard	27465A235	00000
		X	0.397"	5 1/8"	2.87"	Round	0.397"	60°	Standard	27465A236	00000
		Y	0.404"	5 1/4"	3"	Round	0.404"	60°	Standard	27465A237	00000
		Z	0.413"	5 1/4"	3"	Round	0.413"	60°	Standard	27465A238	00000

Carbide Drill Bits for Carbon Fiber, Fiberglass, and Graphite

Jobbers' Length

Cut clean holes in abrasive material without fraying or delaminating the surface. Made of carbide, these bits resist wear to retain a sharp edge, even after after hundreds of cuts.

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





				Uncoated
				A	0.234"	3 1/4"	1.6"	Round	0.234"	140°	Brad	Fluted	2828A811	000000
				B	0.238"	3 1/4"	1.6"	Round	0.238"	140°	Brad	Fluted	2828A812	00000
				C	0.242"	3 1/4"	1.6"	Round	0.242"	140°	Brad	Fluted	2828A813	00000
				D	0.246"	3 1/4"	1.6"	Round	0.246"	140°	Brad	Fluted	2828A814	00000
				E	0.25"	3 1/4"	1.6"	Round	1/4"	140°	Brad	Fluted	2828A815	00000
				F	0.257"	3 1/2"	1.6"	Round	0.257"	140°	Brad	Fluted	2828A816	00000
				G	0.261"	3 1/2"	1.7"	Round	0.261"	140°	Brad	Fluted	2828A817	00000
				H	0.266"	3 1/2"	1.7"	Round	0.266"	140°	Brad	Fluted	2828A818	00000
				I	0.272"	3 1/2"	1.7"	Round	0.272"	140°	Brad	Fluted	2828A819	00000
				K	0.281"	3 1/2"	1.7"	Round	0.281"	140°	Brad	Fluted	2828A822	00000
				L	0.29"	3 1/2"	1.7"	Round	0.29"	140°	Brad	Fluted	2828A823	00000
				M	0.295"	3 3/4"	1.9"	Round	0.295"	140°	Brad	Fluted	2828A824	00000
				N	0.302"	3 3/4"	1.9"	Round	0.302"	140°	Brad	Fluted	2828A825	00000
				O	0.316"	3 3/4"	1.9"	Round	0.316"	140°	Brad	Fluted	2828A826	00000
				P	0.323"	4"	1.9"	Round	0.323"	140°	Brad	Fluted	2828A827	00000
				Q	0.332"	4"	2"	Round	0.332"	140°	Brad	Fluted	2828A828	00000
				R	0.339"	4"	2"	Round	0.339"	140°	Brad	Fluted	2828A829	00000
				S	0.348"	4"	2"	Round	0.348"	140°	Brad	Fluted	2828A831	00000
				U	0.368"	4 1/4"	2.2"	Round	0.368"	140°	Brad	Fluted	2828A833	00000
				V	0.377"	4 1/4"	2.2"	Round	0.377"	140°	Brad	Fluted	2828A834	00000
				W	0.386"	4 1/2"	2.3"	Round	0.386"	140°	Brad	Fluted	2828A835	00000
				X	0.397"	4 1/2"	2.3"	Round	0.397"	140°	Brad	Fluted	2828A836	000000
				Y	0.404"	4 1/2"	2.3"	Round	0.404"	140°	Brad	Fluted	2828A837	000000

Left-Hand High-Speed Steel Drill Bit Sets

With flutes that spiral in the opposite direction of other bits, these are primarily used to remove stripped screws. Choose a bit that’s slightly smaller than the diameter of the screw’s head. Set your power tool to rotate in reverse. Slowly drill in the center of the screw head, maintaining constant pressure. As the bit penetrates, it will catch onto the screw and reverse it out of the hole. If the screw is badly stripped, you might need to punch a starter hole. Also known as reverse-flute bits. High-speed steel is the versatile choice for drilling most metals.

Jobbers' Length About Jobbers' Length


	Standard

These bits have the balance of rigidity and length needed for most applications.

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.

	Drill Bit Sizes Included	System of Measurement	Drill Bit Point Style	Container Type		Each
Uncoated


	26	A-Z	Letter Size	Standard Point	Metal Case	29505A864	0000000