Gold Oxide Drill Bits | McMaster-Carr

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Drill Bit Size

System of Measurement

Length Class

For Use On

Drill Bit Point Type

Finish

Aluminum Titanium Nitride (AlTiN) Coated

Magnesium Phosphate Coated

Titanium Aluminum Nitride (TiAlN) Coated

Titanium Carbon Nitride (TiCN) Coated

Titanium Nitride (TiN) Coated

Flute Direction

Shank Type

Sold As

Shank Size

Material

Decimal Size Equivalent

Point Angle

Overall Length

Flute Type

Maximum Drilling Depth

Number of Flutes

Bit Style

Fluted

Container Type

Metal Case

Plastic Case

Drill Bit Sizes Included

1.0 mm and 1.5 mm

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

1/4", 5/16", 25/64", and 15/32" Hole-Starting Bits

2.0-10.0 mm (increments of 0.5 mm)

2.0-13.0 mm (increments of 0.5 mm)

2.0-7.0 mm (increments of 0.5 mm)

3/8", 1/2", 5/8", and 3/4" Hole-Enlarging Bits

6.0-10.0 mm (increments of 0.1 mm)

Number of Pieces

RoHS

Compliant

Export Control Classification Number (ECCN)

EAR99

REACH

Compliant

DFARS Specialty Metals

Specifications Met

339 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

243 products

Cobalt Steel

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

89 products

Application

Hole Enlarging

Ream large drilled holes

7 products

Flute Direction

Left Hand

Remove stripped screws with flutes that spiral in reverse from other bits

20 products

High-Speed Steel Drill Bits

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.

Maintenance Length—Shorter than jobbers' length, these bits are more rigid for less wobble when drilling hard material. Also known as mechanics’ bits.

Gold Oxide—Like black oxide, this finish adds wear resistance and reduces friction for improved chip flow. Because it’s less prone to flaking off, it offers better rust protection when bits aren't in use.

					Shank
	Drill Bit Size	Decimal Size Equiv.	Overall Lg.	Max. Drilling Dp.	Type	Size	Drill Bit Point Type	Pkg. Qty.		Pkg.
Jobbers' Length
Round Shank Standard Split




				Gold Oxide
				1.0 mm	0.0394"	41 mm	14.2 mm	Round	1 mm	Standard	1	30565A211	00000
				1.0 mm	0.0394"	41 mm	14.2 mm	Round	1 mm	Standard	10	30565A411	00000
				1.05 mm	0.0413"	41 mm	14.2 mm	Round	1.1 mm	Standard	1	30565A212	0000
				1.1 mm	0.0433"	44 mm	15.8 mm	Round	1.1 mm	Standard	1	30565A213	0000
				1.15 mm	0.0453"	44 mm	15.8 mm	Round	1.2 mm	Standard	1	30565A214	0000
				1.2 mm	0.0472"	48 mm	19 mm	Round	1.2 mm	Standard	1	30565A215	0000
				1.25 mm	0.0492"	48 mm	19 mm	Round	1.3 mm	Standard	1	30565A216	0000
				1.25 mm	0.0492"	48 mm	19 mm	Round	1.3 mm	Standard	10	30565A412	00000
				1.3 mm	0.0512"	48 mm	19 mm	Round	1.3 mm	Standard	1	30565A217	0000
				1.3 mm	0.0512"	48 mm	19 mm	Round	1.3 mm	Standard	10	30565A413	00000
				1.35 mm	0.0531"	48 mm	19 mm	Round	1.4 mm	Standard	1	30565A218	0000
				1.4 mm	0.0551"	48 mm	19 mm	Round	1.4 mm	Standard	1	30565A219	0000
				1.45 mm	0.0571"	48 mm	19 mm	Round	1.5 mm	Standard	1	30565A221	0000
				1.5 mm	0.0591"	48 mm	19 mm	Round	1.5 mm	Standard	1	30565A222	0000
				1.5 mm	0.0591"	48 mm	19 mm	Round	1.5 mm	Standard	10	30565A414	00000
				1.55 mm	0.061"	48 mm	19 mm	Round	1.6 mm	Standard	1	30565A223	0000
				1.6 mm	0.063"	48 mm	19 mm	Round	1.6 mm	Standard	1	30565A224	0000
				1.6 mm	0.063"	48 mm	19 mm	Round	1.6 mm	Standard	10	30565A415	00000
				1.65 mm	0.065"	51 mm	22.2 mm	Round	1.7 mm	Split	1	30565A225	0000
				1.65 mm	0.065"	51 mm	22.2 mm	Round	1.7 mm	Split	10	30565A416	00000
				1.7 mm	0.0669"	51 mm	22.2 mm	Round	1.7 mm	Split	1	30565A226	0000
				1.75 mm	0.0689"	51 mm	22.2 mm	Round	1.8 mm	Split	1	30565A227	0000
				1.8 mm	0.0709"	51 mm	22.2 mm	Round	1.8 mm	Split	1	30565A228	0000
				1.9 mm	0.0748"	51 mm	22.2 mm	Round	1.9 mm	Split	1	30565A231	0000
				2.0 mm	0.0787"	51 mm	22.2 mm	Round	2 mm	Split	1	30565A233	0000
				2.0 mm	0.0787"	51 mm	22.2 mm	Round	2 mm	Split	10	30565A417	00000
				2.05 mm	0.0807"	54 mm	23.8 mm	Round	2.1 mm	Split	1	30565A234	0000
				2.05 mm	0.0807"	54 mm	23.8 mm	Round	2.1 mm	Split	10	30565A418	00000
				2.1 mm	0.0827"	54 mm	23.8 mm	Round	2.1 mm	Split	1	30565A235	0000
				2.2 mm	0.0866"	57 mm	25.4 mm	Round	2.2 mm	Split	1	30565A237	0000
				2.2 mm	0.0866"	57 mm	25.4 mm	Round	2.2 mm	Split	10	30565A419	00000
				2.3 mm	0.0906"	57 mm	25.4 mm	Round	2.3 mm	Split	1	30565A239	0000
				2.4 mm	0.0945"	60 mm	34.1 mm	Round	2.4 mm	Split	1	30565A242	0000
				2.4 mm	0.0945"	60 mm	34.1 mm	Round	2.4 mm	Split	10	30565A42	00000
				2.5 mm	0.0984"	60 mm	34.1 mm	Round	2.5 mm	Split	1	30565A244	0000
				2.5 mm	0.0984"	60 mm	34.1 mm	Round	2.5 mm	Split	10	30565A421	00000
				2.6 mm	0.1024"	64 mm	36.9 mm	Round	2.6 mm	Split	1	30565A245	0000
				2.7 mm	0.1063"	64 mm	36.9 mm	Round	2.7 mm	Split	1	30565A246	0000
				2.8 mm	0.1102"	67 mm	37.3 mm	Round	2.8 mm	Split	1	30565A247	0000
				2.9 mm	0.1142"	70 mm	38.1 mm	Round	2.9 mm	Split	1	30565A248	0000
				2.9 mm	0.1142"	70 mm	38.1 mm	Round	2.9 mm	Split	10	30565A422	00000
				3.0 mm	0.1181"	70 mm	38.1 mm	Round	3 mm	Split	1	30565A249	0000
				3.0 mm	0.1181"	70 mm	38.1 mm	Round	3 mm	Split	10	30565A423	00000
				3.1 mm	0.122"	70 mm	38.1 mm	Round	3.1 mm	Split	1	30565A251	0000
				3.1 mm	0.122"	70 mm	38.1 mm	Round	3.1 mm	Split	10	30565A424	00000
				3.2 mm	0.126"	70 mm	38.1 mm	Round	3.2 mm	Split	1	30565A252	0000
				3.2 mm	0.126"	70 mm	38.1 mm	Round	3.2 mm	Split	10	30565A425	00000
				3.3 mm	0.1299"	73 mm	41.3 mm	Round	3.3 mm	Split	1	30565A253	0000
				3.3 mm	0.1299"	73 mm	41.3 mm	Round	3.3 mm	Split	10	30565A426	00000
				3.4 mm	0.1339"	73 mm	41.3 mm	Round	3.4 mm	Split	1	30565A254	0000
				3.4 mm	0.1339"	73 mm	41.3 mm	Round	3.4 mm	Split	10	30565A427	00000
				3.5 mm	0.1378"	73 mm	41.3 mm	Round	3.5 mm	Split	1	30565A255	0000
				3.5 mm	0.1378"	73 mm	41.3 mm	Round	3.5 mm	Split	10	30565A428	00000
				3.6 mm	0.1417"	76 mm	44.5 mm	Round	3.6 mm	Split	1	30565A256	0000
				3.7 mm	0.1457"	76 mm	44.5 mm	Round	3.7 mm	Split	1	30565A257	0000
				3.8 mm	0.1496"	76 mm	44.5 mm	Round	3.8 mm	Split	1	30565A258	0000
				3.9 mm	0.1535"	79 mm	47.6 mm	Round	3.9 mm	Split	1	30565A259	0000
				4.0 mm	0.1575"	83 mm	49.2 mm	Round	4 mm	Split	1	30565A261	0000
4.0 mm				0.1575"	83 mm	49.2 mm	Round	4 mm	Split	10	30565A429	00000
4.1 mm	0.1614"			83 mm	49.2 mm	Round	4.1 mm	Split	1	30565A262	0000
4.2 mm	0.1654"			83 mm	49.2 mm	Round	4.2 mm	Split	1	30565A263	0000
4.2 mm	0.1654"	83 mm		49.2 mm	Round	4.2 mm	Split	10	30565A43	00000
4.3 mm	0.1693"	83 mm	49.2 mm	Round	4.3 mm	Split	1	30565A264	0000
4.3 mm	0.1693"	83 mm	49.2 mm	Round	4.3 mm	Split	10	30565A431	00000
4.4 mm	0.1732"	86 mm	50.8 mm	Round	4.4 mm	Split	1	30565A265	0000
4.5 mm	0.1772"	86 mm	50.8 mm	Round	4.5 mm	Split	1	30565A266	0000
4.5 mm	0.1772"	86 mm	50.8 mm	Round	4.5 mm	Split	10	30565A432	00000
4.6 mm	0.1811"	86 mm	50.8 mm	Round	4.6 mm	Split	1	30565A267	0000
4.7 mm	0.185"	89 mm	58.3 mm	Round	4.7 mm	Split	1	30565A268	0000
4.8 mm	0.189"	89 mm	58.3 mm	Round	4.8 mm	Split	1	30565A269	0000
4.9 mm	0.1929"	92 mm	61.1 mm	Round	4.9 mm	Split	1	30565A271	0000
5.0 mm	0.1968"	92 mm	61.1 mm	Round	5 mm	Split	1	30565A272	0000
5.0 mm	0.1968"	92 mm	61.1 mm	Round	5 mm	Split	10	30565A433	00000
5.1 mm	0.2008"	92 mm	61.1 mm	Round	5.1 mm	Split	1	30565A273	0000
5.1 mm	0.2008"	92 mm	61.1 mm	Round	5.1 mm	Split	10	30565A434	00000
5.2 mm	0.2047"	95 mm	62.3 mm	Round	5.2 mm	Split	1	30565A274	0000
5.2 mm	0.2047"	95 mm	62.3 mm	Round	5.2 mm	Split	10	30565A435	00000
5.3 mm	0.2087"	95 mm	62.3 mm	Round	5.3 mm	Split	1	30565A275	0000
5.4 mm	0.2126"	95 mm	62.3 mm	Round	5.4 mm	Split	1	30565A276	0000
5.5 mm	0.2165"	95 mm	62.3 mm	Round	5.5 mm	Split	1	30565A277	0000
5.5 mm	0.2165"	95 mm	62.3 mm	Round	5.5 mm	Split	10	30565A436	00000
5.6 mm	0.2205"	98 mm	63.5 mm	Round	5.6 mm	Split	1	30565A278	0000
5.7 mm	0.2244"	98 mm	63.5 mm	Round	5.7 mm	Split	1	30565A279	0000
5.8 mm	0.2283"	98 mm	63.5 mm	Round	5.8 mm	Split	1	30565A281	0000
5.9 mm	0.2323"	98 mm	63.5 mm	Round	5.9 mm	Split	1	30565A282	0000
6.0 mm	0.2362"	102 mm	66.7 mm	Round	6 mm	Split	1	30565A283	0000
6.0 mm	0.2362"	102 mm	66.7 mm	Round	6 mm	Split	10	30565A437	00000
6.1 mm	0.2402"	102 mm	66.7 mm	Round	6.1 mm	Split	1	30565A284	0000
6.2 mm	0.2441"	102 mm	66.7 mm	Round	6.2 mm	Split	1	30565A285	0000
6.3 mm	0.248"	102 mm	66.7 mm	Round	6.3 mm	Split	1	30565A286	0000
6.4 mm	0.252"	105 mm	69.9 mm	Round	6.4 mm	Split	1	30565A287	0000
6.5 mm	0.2559"	105 mm	69.9 mm	Round	6.5 mm	Split	1	30565A288	0000
6.5 mm	0.2559"	105 mm	69.9 mm	Round	6.5 mm	Split	10	30565A438	00000
6.6 mm	0.2598"	105 mm	69.9 mm	Round	6.6 mm	Split	1	30565A289	0000
6.7 mm	0.2638"	105 mm	69.9 mm	Round	6.7 mm	Split	1	30565A291	0000
6.7 mm	0.2638"	105 mm	69.9 mm	Round	6.7 mm	Split	10	30565A439	00000
6.8 mm	0.2677"	105 mm	69.9 mm	Round	6.8 mm	Split	1	30565A292	0000
6.8 mm	0.2677"	105 mm	69.9 mm	Round	6.8 mm	Split	10	30565A44	00000
6.9 mm	0.2717"	105 mm	69.9 mm	Round	6.9 mm	Split	1	30565A293	0000
7.0 mm	0.2756"	105 mm	69.9 mm	Round	7 mm	Split	1	30565A294	0000
7.0 mm	0.2756"	105 mm	69.9 mm	Round	7 mm	Split	10	30565A441	00000
7.1 mm	0.2795"	108 mm	71.4 mm	Round	7.1 mm	Split	1	30565A295	0000
7.2 mm	0.2835"	108 mm	71.4 mm	Round	7.2 mm	Split	1	30565A296	0000
7.3 mm	0.2874"	108 mm	71.4 mm	Round	7.3 mm	Split	1	30565A297	0000
7.4 mm	0.2913"	111 mm	73 mm	Round	7.4 mm	Split	1	30565A298	0000
7.5 mm	0.2953"	111 mm	73 mm	Round	7.5 mm	Split	1	30565A299	0000
7.5 mm	0.2953"	111 mm	73 mm	Round	7.5 mm	Split	5	30565A442	00000
7.6 mm	0.2992"	111 mm	73 mm	Round	7.6 mm	Split	1	30565A301	0000
7.7 mm	0.3032"	114 mm	79.8 mm	Round	7.7 mm	Split	1	30565A302	0000
7.8 mm	0.3071"	114 mm	79.8 mm	Round	7.8 mm	Split	1	30565A303	0000
7.9 mm	0.311"	114 mm	79.8 mm	Round	7.9 mm	Split	1	30565A304	0000
8.0 mm	0.315"	114 mm	79.8 mm	Round	8 mm	Split	1	30565A305	0000
8.0 mm	0.315"	114 mm	79.8 mm	Round	8 mm	Split	5	30565A443	00000
8.1 mm	0.3189"	117 mm	83.3 mm	Round	8.1 mm	Split	1	30565A306	0000
8.2 mm	0.3228"	117 mm	83.3 mm	Round	8.2 mm	Split	1	30565A307	0000
8.3 mm	0.3268"	117 mm	83.3 mm	Round	8.3 mm	Split	1	30565A308	0000
8.4 mm	0.3307"	121 mm	86.1 mm	Round	8.4 mm	Split	1	30565A309	0000
8.5 mm	0.3346"	121 mm	86.1 mm	Round	8.5 mm	Split	1	30565A311	0000
8.5 mm	0.3346"	121 mm	86.1 mm	Round	8.5 mm	Split	5	30565A444	00000
8.6 mm	0.3386"	121 mm	86.1 mm	Round	8.6 mm	Split	1	30565A312	0000
8.7 mm	0.3425"	121 mm	86.1 mm	Round	8.7 mm	Split	1	30565A313	0000
8.8 mm	0.3465"	124 mm	87.7 mm	Round	8.8 mm	Split	1	30565A314	0000
8.9 mm	0.3504"	124 mm	87.7 mm	Round	8.9 mm	Split	1	30565A315	0000
9.0 mm	0.3543"	124 mm	87.7 mm	Round	9 mm	Split	1	30565A316	0000
9.0 mm	0.3543"	124 mm	87.7 mm	Round	9 mm	Split	5	30565A445	00000
9.1 mm	0.3583"	124 mm	87.7 mm	Round	9.1 mm	Split	1	30565A317	0000
9.2 mm	0.3622"	127 mm	88.9 mm	Round	9.2 mm	Split	1	30565A318	0000
9.3 mm	0.3661"	127 mm	88.9 mm	Round	9.3 mm	Split	1	30565A319	0000
9.4 mm	0.3701"	127 mm	88.9 mm	Round	9.4 mm	Split	1	30565A321	0000
9.5 mm	0.374"	127 mm	88.9 mm	Round	9.5 mm	Split	1	30565A322	0000
9.5 mm	0.374"	127 mm	88.9 mm	Round	9.5 mm	Split	5	30565A446	00000
9.6 mm	0.378"	130 mm	92.1 mm	Round	9.6 mm	Split	1	30565A323	0000
9.7 mm	0.3819"	130 mm	92.1 mm	Round	9.7 mm	Split	1	30565A324	0000
9.8 mm	0.3858"	130 mm	92.1 mm	Round	9.8 mm	Split	1	30565A325	00000
9.9 mm	0.3898"	130 mm	92.1 mm	Round	9.9 mm	Split	1	30565A326	00000
10.0 mm	0.3937"	130 mm	92.1 mm	Round	10 mm	Split	1	30565A327	0000
10.0 mm	0.3937"	130 mm	92.1 mm	Round	10 mm	Split	5	30565A447	00000
10.2 mm	0.4016"	133 mm	92.1 mm	Round	10.2 mm	Split	1	30565A328	00000
10.2 mm	0.4016"	133 mm	92.1 mm	Round	10.2 mm	Split	5	30565A448	00000
10.5 mm	0.4134"	133 mm	92.1 mm	Round	10.5 mm	Split	1	30565A329	00000
10.5 mm	0.4134"	133 mm	92.1 mm	Round	10.5 mm	Split	5	30565A449	00000
10.8 mm	0.4252"	140 mm	99.8 mm	Round	10.8 mm	Split	1	30565A331	00000
11.0 mm	0.4331"	140 mm	99.8 mm	Round	11 mm	Split	1	30565A332	00000
11.0 mm	0.4331"	140 mm	99.8 mm	Round	11 mm	Split	5	30565A45	00000
11.2 mm	0.4409"	143 mm	106.4 mm	Round	11.2 mm	Split	1	30565A333	00000
11.5 mm	0.4528"	143 mm	106.4 mm	Round	11.5 mm	Split	1	30565A334	00000
11.8 mm	0.4646"	146 mm	109.5 mm	Round	11.8 mm	Split	1	30565A335	00000
12.0 mm	0.4724"	149 mm	110.3 mm	Round	12 mm	Split	1	30565A336	00000
12.0 mm	0.4724"	149 mm	110.3 mm	Round	12 mm	Split	5	30565A451	00000
12.2 mm	0.4803"	149 mm	110.3 mm	Round	12.2 mm	Split	1	30565A337	00000
12.5 mm	0.4921"	152 mm	113.1 mm	Round	12.5 mm	Split	1	30565A338	00000
13.0 mm	0.5118"	152 mm	113.1 mm	Round	13 mm	Split	1	30565A339	00000
13.0 mm	0.5118"	152 mm	113.1 mm	Round	13 mm	Split	5	30565A452	00000

Maintenance Length
Round Shank 3-Flat Shank Split




				Gold Oxide
				1/16"	0.0625"	1 7/8"	0.88"	Round	1/16"	Split	1	87755A841	0000
				5/64"	0.0781"	2"	1"	Round	5/64"	Split	1	87755A842	0000
				3/32"	0.0938"	2 1/4"	1.25"	Round	3/32"	Split	1	87755A843	0000
				7/64"	0.1094"	2 3/8"	1.31"	Round	7/64"	Split	1	87755A844	0000
				1/8"	0.125"	2 1/2"	1.44"	Round	1/8"	Split	1	87755A845	0000
				9/64"	0.1406"	2 5/8"	1.56"	Round	9/64"	Split	1	87755A846	0000
				5/32"	0.1563"	2 3/4"	1.69"	Round	5/32"	Split	1	87755A847	0000
				11/64"	0.1719"	2 7/8"	1.81"	Round	11/64"	Split	1	87755A848	0000
				3/16"	0.1875"	3"	1.75"	Round/3-Flat	3/16"	Split	1	87755A29	0000
				3/16"	0.1875"	3"	1.75"	Round/3-Flat	3/16"	Split	12	87755A1	00000
				13/64"	0.2031"	3 1/8"	1.81"	Round/3-Flat	13/64"	Split	1	87755A31	0000
				13/64"	0.2031"	3 1/8"	1.81"	Round/3-Flat	13/64"	Split	12	87755A11	00000
				7/32"	0.2188"	3 1/4"	1.87"	Round/3-Flat	7/32"	Split	1	87755A32	0000
				7/32"	0.2188"	3 1/4"	1.87"	Round/3-Flat	7/32"	Split	12	87755A12	00000
				15/64"	0.2344"	3 3/8"	1.93"	Round/3-Flat	15/64"	Split	1	87755A33	0000
				15/64"	0.2344"	3 3/8"	1.93"	Round/3-Flat	15/64"	Split	12	87755A13	00000
				1/4"	0.25"	3 1/2"	1.87"	Round/3-Flat	1/4"	Split	1	87755A34	0000
				1/4"	0.25"	3 1/2"	1.87"	Round/3-Flat	1/4"	Split	12	87755A14	00000
				17/64"	0.2656"	3 5/8"	2"	Round/3-Flat	17/64"	Split	1	87755A35	0000
				17/64"	0.2656"	3 5/8"	2"	Round/3-Flat	17/64"	Split	12	87755A15	00000
				9/32"	0.2813"	3 3/4"	2.18"	Round/3-Flat	9/32"	Split	1	87755A36	0000
				9/32"	0.2813"	3 3/4"	2.18"	Round/3-Flat	9/32"	Split	12	87755A16	00000
				19/64"	0.2969"	3 7/8"	2.34"	Round/3-Flat	19/64"	Split	1	87755A37	0000
				5/16"	0.3125"	4"	2.46"	Round/3-Flat	5/16"	Split	1	87755A38	0000
				5/16"	0.3125"	4"	2.46"	Round/3-Flat	5/16"	Split	6	87755A18	00000
				21/64"	0.3281"	4 1/8"	2.48"	Round/3-Flat	21/64"	Split	1	87755A39	0000
				21/64"	0.3281"	4 1/8"	2.48"	Round/3-Flat	21/64"	Split	6	87755A19	00000
				11/32"	0.3438"	4 1/8"	2.5"	Round/3-Flat	11/32"	Split	1	87755A41	0000
				11/32"	0.3438"	4 1/8"	2.5"	Round/3-Flat	11/32"	Split	6	87755A21	00000
				23/64"	0.3594"	4 1/4"	2.56"	Round/3-Flat	23/64"	Split	1	87755A42	0000
				23/64"	0.3594"	4 1/4"	2.56"	Round/3-Flat	23/64"	Split	6	87755A22	00000
				3/8"	0.375"	4 1/4"	2.56"	Round/3-Flat	3/8"	Split	1	87755A43	0000
				3/8"	0.375"	4 1/4"	2.56"	Round/3-Flat	3/8"	Split	6	87755A23	00000
				25/64"	0.3906"	4 3/8"	2.62"	Round/3-Flat	25/64"	Split	1	87755A44	0000
				25/64"	0.3906"	4 3/8"	2.62"	Round/3-Flat	25/64"	Split	6	87755A24	00000
				13/32"	0.4063"	4 3/8"	2.68"	Round/3-Flat	13/32"	Split	1	87755A45	0000
				13/32"	0.4063"	4 3/8"	2.68"	Round/3-Flat	13/32"	Split	6	87755A25	00000
				27/64"	0.4219"	4 1/2"	2.75"	Round/3-Flat	27/64"	Split	1	87755A46	00000
				7/16"	0.4375"	4 1/2"	2.81"	Round/3-Flat	7/16"	Split	1	87755A47	00000
				7/16"	0.4375"	4 1/2"	2.81"	Round/3-Flat	7/16"	Split	6	87755A27	00000
				29/64"	0.4531"	4 5/8"	2.87"	Round/3-Flat	29/64"	Split	1	87755A48	00000
				15/32"	0.4688"	4 3/4"	3"	Round/3-Flat	15/32"	Split	1	87755A49	00000
				31/64"	0.4844"	4 7/8"	3.21"	Round/3-Flat	31/64"	Split	1	87755A51	00000
				1/2"	0.5"	5"	3.34"	Round/3-Flat	1/2"	Split	1	87755A52	00000
				1/2"	0.5"	5"	3.34"	Round/3-Flat	1/2"	Split	6	87755A53	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.

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





				Gold Oxide
				1.0	0.0394"	34	10	Round	1 mm	Split	29355A11	00000
				1.05	0.0413"	34	9.9	Round	1.1 mm	Split	29355A12	0000
				1.1	0.0433"	36	11.8	Round	1.1 mm	Split	29355A13	0000
				1.15	0.0453"	36	11.7	Round	1.2 mm	Split	29355A14	0000
				1.2	0.0472"	38	13.6	Round	1.2 mm	Split	29355A15	0000
				1.25	0.0492"	38	13.5	Round	1.3 mm	Split	29355A16	0000
				1.3	0.0512"	38	13.4	Round	1.3 mm	Split	29355A17	0000
				1.35	0.0531"	40	15.3	Round	1.4 mm	Split	29355A18	0000
				1.4	0.0551"	40	15.2	Round	1.4 mm	Split	29355A19	0000
				1.45	0.0571"	40	15.1	Round	1.5 mm	Split	29355A21	0000
				1.5	0.0591"	40	15	Round	1.5 mm	Split	29355A22	0000
				1.55	0.061"	43	16.9	Round	1.6 mm	Split	29355A23	0000
				1.6	0.063"	43	16.8	Round	1.6 mm	Split	29355A24	0000
				1.65	0.065"	43	16.7	Round	1.7 mm	Split	29355A25	0000
				1.7	0.0669"	43	16.6	Round	1.7 mm	Split	29355A26	0000
				1.75	0.0689"	46	18.5	Round	1.8 mm	Split	29355A27	0000
				1.8	0.0709"	46	18.4	Round	1.8 mm	Split	29355A28	0000
				1.85	0.0728"	46	18.3	Round	1.9 mm	Split	29355A29	0000
				1.9	0.0748"	46	18.2	Round	1.9 mm	Split	29355A31	0000
				1.95	0.0768"	49	20.1	Round	2 mm	Split	29355A32	0000
				2.0	0.0787"	49	20	Round	2 mm	Split	29355A33	0000
				2.05	0.0807"	49	19.9	Round	2.1 mm	Split	29355A34	0000
				2.1	0.0827"	49	19.8	Round	2.1 mm	Split	29355A35	0000
				2.2	0.0866"	53	22.6	Round	2.2 mm	Split	29355A37	0000
				2.3	0.0906"	53	22.4	Round	2.3 mm	Split	29355A39	0000
				2.35	0.0925"	53	22.3	Round	2.4 mm	Split	29355A41	0000
				2.4	0.0945"	57	25.2	Round	2.4 mm	Split	29355A42	0000
				2.5	0.0984"	57	25	Round	2.5 mm	Split	29355A44	0000
				2.6	0.1024"	57	24.8	Round	2.6 mm	Split	29355A45	0000
				2.7	0.1063"	61	27.6	Round	2.7 mm	Split	29355A46	0000
				2.8	0.1102"	61	27.4	Round	2.8 mm	Split	29355A48	0000
				2.9	0.1142"	61	27.2	Round	2.9 mm	Split	29355A49	0000
				3.0	0.1181"	61	27	Round	3 mm	Split	29355A51	0000
				3.1	0.122"	65	29.8	Round	3.1 mm	Split	29355A52	0000
				3.2	0.126"	65	29.6	Round	3.2 mm	Split	29355A53	0000
				3.3	0.13"	65	29.4	Round	3.3 mm	Split	29355A55	0000
				3.4	0.1339"	70	32.2	Round	3.4 mm	Split	29355A56	0000
				3.5	0.1378"	70	32	Round	3.5 mm	Split	29355A57	0000
				3.6	0.1417"	70	31.8	Round	3.6 mm	Split	29355A58	0000
				3.7	0.1457"	70	31.6	Round	3.7 mm	Split	29355A59	0000
				3.8	0.1496"	75	35.4	Round	3.8 mm	Split	29355A62	0000
				4.0	0.1575"	75	35	Round	4 mm	Split	29355A64	0000
				4.1	0.1614"	75	34.8	Round	4.1 mm	Split	29355A65	0000
				4.2	0.1654"	75	34.6	Round	4.2 mm	Split	29355A66	0000
				4.3	0.1693"	80	38.4	Round	4.3 mm	Split	29355A68	0000
				4.5	0.1772"	80	38	Round	4.5 mm	Split	29355A71	0000
				4.7	0.185"	80	37.6	Round	4.7 mm	Split	29355A73	0000
				4.8	0.189"	86	42.4	Round	4.8 mm	Split	29355A75	0000
				5.0	0.1968"	86	42	Round	5 mm	Split	29355A77	0000
				5.1	0.2008"	86	41.8	Round	5.1 mm	Split	29355A78	0000
				5.2	0.2047"	86	41.6	Round	5.2 mm	Split	29355A79	0000
				5.3	0.2087"	86	41.5	Round	5.3 mm	Split	29355A82	0000
				5.5	0.2165"	93	46	Round	5.5 mm	Split	29355A84	0000
				5.6	0.2205"	93	45.8	Round	5.6 mm	Split	29355A85	0000
				5.7	0.2244"	93	45.6	Round	5.7 mm	Split	29355A86	0000
				5.9	0.2323"	93	45.2	Round	5.9 mm	Split	29355A91	0000
				6.0	0.2362"	93	45	Round	6 mm	Split	29355A92	0000
				6.1	0.2402"	101	50.8	Round	6.1 mm	Split	29355A93	0000
6.2				0.2441"	101	50.6	Round	6.2 mm	Split	29355A94	0000
6.3	0.248"			101	50.4	Round	6.3 mm	Split	29355A96	0000
6.4	0.252"			101	50.2	Round	6.4 mm	Split	29355A97	0000
6.5	0.2559"	101		50	Round	6.5 mm	Split	29355A98	0000
6.6	0.2598"	101	49.8	Round	6.6 mm	Split	29355A112	0000
6.7	0.2638"	101	49.6	Round	6.7 mm	Split	29355A113	0000
6.8	0.2677"	109	55.4	Round	6.8 mm	Split	29355A115	0000
6.9	0.2717"	109	55.2	Round	6.9 mm	Split	29355A116	0000
7.0	0.2756"	109	55	Round	7 mm	Split	29355A117	0000
7.5	0.2953"	109	54	Round	7.5 mm	Split	29355A124	00000
7.8	0.3071"	117	59.4	Round	7.8 mm	Split	29355A128	00000
7.9	0.311"	117	59.2	Round	7.9 mm	Split	29355A131	00000
8.2	0.3223"	117	58.6	Round	8.2 mm	Split	29355A134	00000
8.4	0.3307"	117	58.2	Round	8.4 mm	Split	29355A137	00000
8.5	0.3346"	117	58	Round	8.5 mm	Split	29355A138	00000
8.8	0.3465"	125	63.4	Round	8.8 mm	Split	29355A143	00000
9.0	0.3543"	125	63	Round	9 mm	Split	29355A145	00000
9.4	0.3701"	125	62.2	Round	9.4 mm	Split	29355A151	00000
9.5	0.374"	125	62	Round	9.5 mm	Split	29355A152	00000
9.6	0.378"	133	67.8	Round	9.6 mm	Split	29355A153	00000
9.7	0.3819"	133	67.6	Round	9.7 mm	Split	29355A154	00000
10.0	0.3937"	133	67	Round	10 mm	Split	29355A158	00000
10.2	0.4016"	133	66.6	Round	10.2 mm	Split	29355A159	00000
10.5	0.4134"	133	66	Round	10.5 mm	Split	29355A161	00000
10.8	0.4252"	142	72.4	Round	10.8 mm	Split	29355A162	00000
11.0	0.4331"	142	72	Round	11 mm	Split	29355A163	00000
11.5	0.4528"	142	71	Round	11.5 mm	Split	29355A165	00000
11.8	0.4646"	142	70.4	Round	11.8 mm	Split	29355A166	00000
12.0	0.4724"	151	77	Round	12 mm	Split	29355A167	00000
12.5	0.4921"	151	76	Round	12.5 mm	Split	29355A169	00000
13.0	0.5118"	151	75	Round	13 mm	Split	29355A171	00000

Reduced-Shank High-Speed Steel Drill Bits

Jobbers' Length

Split

Cut large holes with drill presses and portable drills that have a standard-size chuck. The shank on these bits has a smaller diameter than the cutting tip. High-speed steel is good for general purpose drilling in most metals. Also known as Silver and Deming bits.

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

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





				Gold Oxide
				13.0	0.5118"	152	63.5	Reduced Round/3-Flat	1/2"	Split	6154N11	000000
				13.5	0.5315"	152	63.5	Reduced Round/3-Flat	1/2"	Split	6154N12	00000
				14.0	0.5512"	152	63.5	Reduced Round/3-Flat	1/2"	Split	6154N13	00000
				14.5	0.5709"	152	63.5	Reduced Round/3-Flat	1/2"	Split	6154N14	00000
				15.0	0.5906"	152	63.5	Reduced Round/3-Flat	1/2"	Split	6154N15	00000
				15.5	0.6102"	152	63.5	Reduced Round/3-Flat	1/2"	Split	6154N16	00000
				16.0	0.6299"	152	63.5	Reduced Round/3-Flat	1/2"	Split	6154N17	00000
				16.5	0.6496"	152	63.5	Reduced Round/3-Flat	1/2"	Split	6154N18	00000
				17.0	0.6693"	152	63.5	Reduced Round/3-Flat	1/2"	Split	6154N19	00000
				17.5	0.689"	152	63.5	Reduced Round/3-Flat	1/2"	Split	6154N21	00000
				18.0	0.7087"	152	63.5	Reduced Round/3-Flat	1/2"	Split	6154N22	00000
				18.5	0.7283"	152	63.5	Reduced Round/3-Flat	1/2"	Split	6154N23	00000
				19.0	0.748"	152	63.5	Reduced Round/3-Flat	1/2"	Split	6154N24	00000
				19.5	0.7677"	152	63.5	Reduced Round/3-Flat	1/2"	Split	6154N25	00000
				20.0	0.7874"	152	63.5	Reduced Round/3-Flat	1/2"	Split	6154N26	00000
				21.0	0.8268"	152	63.5	Reduced Round/3-Flat	1/2"	Split	6154N27	00000
				22.0	0.8661"	152	63.5	Reduced Round/3-Flat	1/2"	Split	6154N28	00000
				23.0	0.9055"	152	63.5	Reduced Round/3-Flat	1/2"	Split	6154N29	00000
				24.0	0.9449"	152	63.5	Reduced Round/3-Flat	1/2"	Split	6154N31	00000
				25.0	0.9842"	152	63.5	Reduced Round/3-Flat	1/2"	Split	6154N32	00000

Left-Hand High-Speed Steel Drill Bits

Jobbers' Length

Round Shank

Split

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—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





				Gold Oxide
				1/16"	0.0625"	1 7/8"	0.75"	Round	1/16"	Split	88055A41	00000
				5/64"	0.0781"	2"	0.88"	Round	5/64"	Split	88055A42	0000
				3/32"	0.0938"	2 1/4"	1.22"	Round	3/32"	Split	88055A43	0000
				7/64"	0.1094"	2 5/8"	1.47"	Round	7/64"	Split	88055A44	0000
				1/8"	0.125"	2 3/4"	1.5"	Round	1/8"	Split	88055A45	0000
				9/64"	0.1406"	2 7/8"	1.63"	Round	9/64"	Split	88055A61	0000
				5/32"	0.1563"	3 1/8"	1.88"	Round	5/32"	Split	88055A46	0000
				11/64"	0.1719"	3 1/4"	2.09"	Round	11/64"	Split	88055A62	0000
				3/16"	0.1875"	3 1/2"	2.28"	Round	3/16"	Split	88055A47	0000
				13/64"	0.2031"	3 5/8"	2.41"	Round	13/64"	Split	88055A63	0000
				7/32"	0.2188"	3 3/4"	2.47"	Round	7/32"	Split	88055A64	00000
				15/64"	0.2344"	3 7/8"	2.5"	Round	15/64"	Split	88055A65	00000
				1/4"	0.25"	4"	2.63"	Round	1/4"	Split	88055A48	00000
				17/64"	0.2656"	4 1/8"	2.75"	Round	17/64"	Split	88055A66	00000
				9/32"	0.2813"	4 1/4"	2.81"	Round	9/32"	Split	88055A67	00000
				19/64"	0.2969"	4 3/8"	2.94"	Round	19/64"	Split	88055A49	00000
				5/16"	0.3125"	4 1/2"	3.16"	Round	5/16"	Split	88055A51	00000
				3/8"	0.375"	5"	3.5"	Round	3/8"	Split	88055A52	00000
				7/16"	0.4375"	5 1/2"	3.94"	Round	7/16"	Split	88055A53	00000
				1/2"	0.5"	6"	4.45"	Round	1/2"	Split	88055A54	00000

Hole-Enlarging Reduced-Shank Drill Bits

A simple way to enlarge an existing drilled hole, these bits are an economical alternative to reamers. They have four flutes that won’t catch on the inside of the hole like standard two-flute bits can, avoiding damage to the hole and your tool. The shank has a smaller diameter than the cutting tip, so you can ream large holes using tools that have standard-size chucks.

Shank Type		Each





Gold Oxide
3/8"	4.31"	1.75"	Reduced Round	30455A61	000000
1/2"	4.31"	1.75"	Reduced Round	30455A62	00000
9/16"	4.31"	1.75"	Reduced Round	30455A63	00000
5/8"	4.31"	1.75"	Reduced Round	30455A64	00000
11/16"	4.31"	1.75"	Reduced Round	30455A65	00000
3/4"	4.31"	1.75"	Reduced Round	30455A66	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


	Split

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

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


	13	1.0 mm and 1.5 mm, 2.0-7.0 mm (increments of 0.5 mm)	Metric	Split Point	NAS907 Type B	Metal Case	30155A53	000000
	19	1.0 mm and 1.5 mm, 2.0-10.0 mm (increments of 0.5 mm)	Metric	Split Point	NAS907 Type B	Metal Case	30155A55	00000
	25	1.0 mm and 1.5 mm, 2.0-13.0 mm (increments of 0.5 mm)	Metric	Split Point	NAS907 Type B	Metal Case	30155A57	000000
	41	6.0-10.0 mm (increments of 0.1 mm)	Metric	Split Point	NAS907 Type B	Metal Case	30155A59	000000

Maintenance Length About Maintenance Length


	Split

Shorter than jobbers' length, these bits are more rigid for less wobble when drilling hard material. Also known as mechanics’ bits.

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


	29	1/16"-1/2" (increments of 1/64")	Inch	Split Point	Plastic Case	87755A78	0000000

Reduced-Shank Hole-Enlarging Drill Bit Sets

An economical alternative to reamers, these sets include four bit sizes for enlarging existing drilled holes. Bits have four flutes that won’t catch on the inside of the hole like standard two-flute bits can, avoiding damage to the hole and your tool. The shank has a smaller diameter than the cutting tip, so you can ream large holes using tools that have small-capacity chucks. Sets also contain four hole-starting bits.

	Drill Bit Sizes Included	System of Measurement	Container Type		Each
Gold Oxide


	8	1/4", 5/16", 25/64", and 15/32" Hole-Starting Bits, 3/8", 1/2", 5/8", and 3/4" Hole-Enlarging Bits	Inch	Metal Case	30455A71	0000000