Black-and-Gold Drill Bits

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Drill Bit Size

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For Use On

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Shank Size

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Material

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Decimal Size Equivalent

Sold As

Maximum Drilling Depth

Number of Flutes

Length

DFARS Specialty Metals

Exempt

RoHS

Compliant

Export Control Classification Number (ECCN)

EAR99

REACH

Compliant

Number of Pieces

Container Type

Metal Case

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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)

Reamer Fractional Size

Shank Diameter

Hole Diameter

230 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

223 products

Application

Hole Enlarging

Ream large drilled holes

7 products

Sold As

Set

Keep a range of sizes on hand

6 products

Length Class

Jobbers

The rigidity and length needed for most applications

177 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	000000000	00000


				1.0 mm	0.0394"	41 mm	14.2 mm	Round	1 mm	Standard	10	000000000	00000
				1.05 mm	0.0413"	41 mm	14.2 mm	Round	1.1 mm	Standard	1	000000000	0000
				1.1 mm	0.0433"	44 mm	15.8 mm	Round	1.1 mm	Standard	1	000000000	0000
				1.15 mm	0.0453"	44 mm	15.8 mm	Round	1.2 mm	Standard	1	000000000	0000
				1.2 mm	0.0472"	48 mm	19 mm	Round	1.2 mm	Standard	1	000000000	0000
				1.25 mm	0.0492"	48 mm	19 mm	Round	1.3 mm	Standard	1	000000000	0000
				1.25 mm	0.0492"	48 mm	19 mm	Round	1.3 mm	Standard	10	000000000	00000
				1.3 mm	0.0512"	48 mm	19 mm	Round	1.3 mm	Standard	1	000000000	0000
				1.3 mm	0.0512"	48 mm	19 mm	Round	1.3 mm	Standard	10	000000000	00000
				1.35 mm	0.0531"	48 mm	19 mm	Round	1.4 mm	Standard	1	000000000	0000


				1.4 mm	0.0551"	48 mm	19 mm	Round	1.4 mm	Standard	1	000000000	0000
				1.45 mm	0.0571"	48 mm	19 mm	Round	1.5 mm	Standard	1	000000000	0000
				1.5 mm	0.0591"	48 mm	19 mm	Round	1.5 mm	Standard	1	000000000	0000
				1.5 mm	0.0591"	48 mm	19 mm	Round	1.5 mm	Standard	10	000000000	00000
				1.55 mm	0.061"	48 mm	19 mm	Round	1.6 mm	Standard	1	000000000	0000
				1.6 mm	0.063"	48 mm	19 mm	Round	1.6 mm	Standard	1	000000000	0000
				1.6 mm	0.063"	48 mm	19 mm	Round	1.6 mm	Standard	10	000000000	00000
				1.65 mm	0.065"	51 mm	22.2 mm	Round	1.7 mm	Split	1	000000000	0000
				1.65 mm	0.065"	51 mm	22.2 mm	Round	1.7 mm	Split	10	000000000	00000
				1.7 mm	0.0669"	51 mm	22.2 mm	Round	1.7 mm	Split	1	000000000	0000


				1.75 mm	0.0689"	51 mm	22.2 mm	Round	1.8 mm	Split	1	000000000	0000
				1.8 mm	0.0709"	51 mm	22.2 mm	Round	1.8 mm	Split	1	000000000	0000
				1.9 mm	0.0748"	51 mm	22.2 mm	Round	1.9 mm	Split	1	000000000	0000
				2.0 mm	0.0787"	51 mm	22.2 mm	Round	2 mm	Split	1	000000000	0000
				2.0 mm	0.0787"	51 mm	22.2 mm	Round	2 mm	Split	10	000000000	00000
				2.05 mm	0.0807"	54 mm	23.8 mm	Round	2.1 mm	Split	1	000000000	0000
				2.05 mm	0.0807"	54 mm	23.8 mm	Round	2.1 mm	Split	10	000000000	00000
				2.1 mm	0.0827"	54 mm	23.8 mm	Round	2.1 mm	Split	1	000000000	0000
				2.2 mm	0.0866"	57 mm	25.4 mm	Round	2.2 mm	Split	1	000000000	0000
				2.2 mm	0.0866"	57 mm	25.4 mm	Round	2.2 mm	Split	10	000000000	00000


				2.3 mm	0.0906"	57 mm	25.4 mm	Round	2.3 mm	Split	1	000000000	0000
				2.4 mm	0.0945"	60 mm	34.1 mm	Round	2.4 mm	Split	1	000000000	0000
				2.4 mm	0.0945"	60 mm	34.1 mm	Round	2.4 mm	Split	10	00000000	00000
				2.5 mm	0.0984"	60 mm	34.1 mm	Round	2.5 mm	Split	1	000000000	0000
				2.5 mm	0.0984"	60 mm	34.1 mm	Round	2.5 mm	Split	10	000000000	00000
				2.6 mm	0.1024"	64 mm	36.9 mm	Round	2.6 mm	Split	1	000000000	0000
				2.7 mm	0.1063"	64 mm	36.9 mm	Round	2.7 mm	Split	1	000000000	0000
				2.8 mm	0.1102"	67 mm	37.3 mm	Round	2.8 mm	Split	1	000000000	0000
				2.9 mm	0.1142"	70 mm	38.1 mm	Round	2.9 mm	Split	1	000000000	0000
				2.9 mm	0.1142"	70 mm	38.1 mm	Round	2.9 mm	Split	10	000000000	00000


				3.0 mm	0.1181"	70 mm	38.1 mm	Round	3 mm	Split	1	000000000	0000
				3.0 mm	0.1181"	70 mm	38.1 mm	Round	3 mm	Split	10	000000000	00000
				3.1 mm	0.122"	70 mm	38.1 mm	Round	3.1 mm	Split	1	000000000	0000
				3.1 mm	0.122"	70 mm	38.1 mm	Round	3.1 mm	Split	10	000000000	00000
3.2 mm				0.126"	70 mm	38.1 mm	Round	3.2 mm	Split	1	000000000	0000
3.2 mm	0.126"			70 mm	38.1 mm	Round	3.2 mm	Split	10	000000000	00000
3.3 mm	0.1299"			73 mm	41.3 mm	Round	3.3 mm	Split	1	000000000	0000
3.3 mm	0.1299"			73 mm	41.3 mm	Round	3.3 mm	Split	10	000000000	00000
3.4 mm	0.1339"			73 mm	41.3 mm	Round	3.4 mm	Split	1	000000000	0000
3.4 mm	0.1339"	73 mm		41.3 mm	Round	3.4 mm	Split	10	000000000	00000
3.5 mm	0.1378"	73 mm	41.3 mm	Round	3.5 mm	Split	1	000000000	0000
3.5 mm	0.1378"	73 mm	41.3 mm	Round	3.5 mm	Split	10	000000000	00000
3.6 mm	0.1417"	76 mm	44.5 mm	Round	3.6 mm	Split	1	000000000	0000
3.7 mm	0.1457"	76 mm	44.5 mm	Round	3.7 mm	Split	1	000000000	0000
3.8 mm	0.1496"	76 mm	44.5 mm	Round	3.8 mm	Split	1	000000000	0000
3.9 mm	0.1535"	79 mm	47.6 mm	Round	3.9 mm	Split	1	000000000	0000
4.0 mm	0.1575"	83 mm	49.2 mm	Round	4 mm	Split	1	000000000	0000
4.0 mm	0.1575"	83 mm	49.2 mm	Round	4 mm	Split	10	000000000	00000
4.1 mm	0.1614"	83 mm	49.2 mm	Round	4.1 mm	Split	1	000000000	0000
4.2 mm	0.1654"	83 mm	49.2 mm	Round	4.2 mm	Split	1	000000000	0000
4.2 mm	0.1654"	83 mm	49.2 mm	Round	4.2 mm	Split	10	00000000	00000
4.3 mm	0.1693"	83 mm	49.2 mm	Round	4.3 mm	Split	1	000000000	0000
4.3 mm	0.1693"	83 mm	49.2 mm	Round	4.3 mm	Split	10	000000000	00000
4.4 mm	0.1732"	86 mm	50.8 mm	Round	4.4 mm	Split	1	000000000	0000
4.5 mm	0.1772"	86 mm	50.8 mm	Round	4.5 mm	Split	1	000000000	0000
4.5 mm	0.1772"	86 mm	50.8 mm	Round	4.5 mm	Split	10	000000000	00000
4.6 mm	0.1811"	86 mm	50.8 mm	Round	4.6 mm	Split	1	000000000	0000
4.7 mm	0.185"	89 mm	58.3 mm	Round	4.7 mm	Split	1	000000000	0000
4.8 mm	0.189"	89 mm	58.3 mm	Round	4.8 mm	Split	1	000000000	0000
4.9 mm	0.1929"	92 mm	61.1 mm	Round	4.9 mm	Split	1	000000000	0000
5.0 mm	0.1969"	92 mm	61.1 mm	Round	5 mm	Split	1	000000000	0000
5.0 mm	0.1969"	92 mm	61.1 mm	Round	5 mm	Split	10	000000000	00000
5.1 mm	0.2008"	92 mm	61.1 mm	Round	5.1 mm	Split	1	000000000	0000
5.1 mm	0.2008"	92 mm	61.1 mm	Round	5.1 mm	Split	10	000000000	00000
5.2 mm	0.2047"	95 mm	62.3 mm	Round	5.2 mm	Split	1	000000000	0000
5.2 mm	0.2047"	95 mm	62.3 mm	Round	5.2 mm	Split	10	000000000	00000
5.3 mm	0.2087"	95 mm	62.3 mm	Round	5.3 mm	Split	1	000000000	0000
5.4 mm	0.2126"	95 mm	62.3 mm	Round	5.4 mm	Split	1	000000000	0000
5.5 mm	0.2165"	95 mm	62.3 mm	Round	5.5 mm	Split	1	000000000	0000
5.5 mm	0.2165"	95 mm	62.3 mm	Round	5.5 mm	Split	10	000000000	00000
5.6 mm	0.2205"	98 mm	63.5 mm	Round	5.6 mm	Split	1	000000000	0000
5.7 mm	0.2244"	98 mm	63.5 mm	Round	5.7 mm	Split	1	000000000	0000
5.8 mm	0.2283"	98 mm	63.5 mm	Round	5.8 mm	Split	1	000000000	0000
5.9 mm	0.2323"	98 mm	63.5 mm	Round	5.9 mm	Split	1	000000000	0000
6.0 mm	0.2362"	102 mm	66.7 mm	Round	6 mm	Split	1	000000000	0000
6.0 mm	0.2362"	102 mm	66.7 mm	Round	6 mm	Split	10	000000000	00000
6.1 mm	0.2402"	102 mm	66.7 mm	Round	6.1 mm	Split	1	000000000	0000
6.2 mm	0.2441"	102 mm	66.7 mm	Round	6.2 mm	Split	1	000000000	0000
6.3 mm	0.248"	102 mm	66.7 mm	Round	6.3 mm	Split	1	000000000	0000
6.4 mm	0.252"	105 mm	69.9 mm	Round	6.4 mm	Split	1	000000000	0000
6.5 mm	0.2559"	105 mm	69.9 mm	Round	6.5 mm	Split	1	000000000	0000
6.5 mm	0.2559"	105 mm	69.9 mm	Round	6.5 mm	Split	10	000000000	00000
6.6 mm	0.2598"	105 mm	69.9 mm	Round	6.6 mm	Split	1	000000000	0000
6.7 mm	0.2638"	105 mm	69.9 mm	Round	6.7 mm	Split	1	000000000	0000
6.7 mm	0.2638"	105 mm	69.9 mm	Round	6.7 mm	Split	10	000000000	00000
6.8 mm	0.2677"	105 mm	69.9 mm	Round	6.8 mm	Split	1	000000000	0000
6.8 mm	0.2677"	105 mm	69.9 mm	Round	6.8 mm	Split	10	00000000	00000
6.9 mm	0.2717"	105 mm	69.9 mm	Round	6.9 mm	Split	1	000000000	0000
7.0 mm	0.2756"	105 mm	69.9 mm	Round	7 mm	Split	1	000000000	0000
7.0 mm	0.2756"	105 mm	69.9 mm	Round	7 mm	Split	10	000000000	00000
7.1 mm	0.2795"	108 mm	71.4 mm	Round	7.1 mm	Split	1	000000000	0000
7.2 mm	0.2835"	108 mm	71.4 mm	Round	7.2 mm	Split	1	000000000	0000
7.3 mm	0.2874"	108 mm	71.4 mm	Round	7.3 mm	Split	1	000000000	0000
7.4 mm	0.2913"	111 mm	73 mm	Round	7.4 mm	Split	1	000000000	0000
7.5 mm	0.2953"	111 mm	73 mm	Round	7.5 mm	Split	1	000000000	0000
7.5 mm	0.2953"	111 mm	73 mm	Round	7.5 mm	Split	5	000000000	00000
7.6 mm	0.2992"	111 mm	73 mm	Round	7.6 mm	Split	1	000000000	0000
7.7 mm	0.3032"	114 mm	79.8 mm	Round	7.7 mm	Split	1	000000000	0000
7.8 mm	0.3071"	114 mm	79.8 mm	Round	7.8 mm	Split	1	000000000	0000
7.9 mm	0.311"	114 mm	79.8 mm	Round	7.9 mm	Split	1	000000000	0000
8.0 mm	0.315"	114 mm	79.8 mm	Round	8 mm	Split	1	000000000	0000
8.0 mm	0.315"	114 mm	79.8 mm	Round	8 mm	Split	5	000000000	00000
8.1 mm	0.3189"	117 mm	83.3 mm	Round	8.1 mm	Split	1	000000000	0000
8.2 mm	0.3228"	117 mm	83.3 mm	Round	8.2 mm	Split	1	000000000	0000
8.3 mm	0.3268"	117 mm	83.3 mm	Round	8.3 mm	Split	1	000000000	0000
8.4 mm	0.3307"	121 mm	86.1 mm	Round	8.4 mm	Split	1	000000000	0000
8.5 mm	0.3346"	121 mm	86.1 mm	Round	8.5 mm	Split	1	000000000	0000
8.5 mm	0.3346"	121 mm	86.1 mm	Round	8.5 mm	Split	5	000000000	00000
8.6 mm	0.3386"	121 mm	86.1 mm	Round	8.6 mm	Split	1	000000000	0000
8.7 mm	0.3425"	121 mm	86.1 mm	Round	8.7 mm	Split	1	000000000	0000
8.8 mm	0.3465"	124 mm	87.7 mm	Round	8.8 mm	Split	1	000000000	0000
8.9 mm	0.3504"	124 mm	87.7 mm	Round	8.9 mm	Split	1	000000000	0000
9.0 mm	0.3543"	124 mm	87.7 mm	Round	9 mm	Split	1	000000000	0000
9.0 mm	0.3543"	124 mm	87.7 mm	Round	9 mm	Split	5	000000000	00000
9.1 mm	0.3583"	124 mm	87.7 mm	Round	9.1 mm	Split	1	000000000	0000
9.2 mm	0.3622"	127 mm	88.9 mm	Round	9.2 mm	Split	1	000000000	0000
9.3 mm	0.3661"	127 mm	88.9 mm	Round	9.3 mm	Split	1	000000000	0000
9.4 mm	0.3701"	127 mm	88.9 mm	Round	9.4 mm	Split	1	000000000	0000
9.5 mm	0.374"	127 mm	88.9 mm	Round	9.5 mm	Split	1	000000000	0000
9.5 mm	0.374"	127 mm	88.9 mm	Round	9.5 mm	Split	5	000000000	00000
9.6 mm	0.378"	130 mm	92.1 mm	Round	9.6 mm	Split	1	000000000	0000
9.7 mm	0.3819"	130 mm	92.1 mm	Round	9.7 mm	Split	1	000000000	0000
9.8 mm	0.3858"	130 mm	92.1 mm	Round	9.8 mm	Split	1	000000000	00000
9.9 mm	0.3898"	130 mm	92.1 mm	Round	9.9 mm	Split	1	000000000	00000
10.0 mm	0.3937"	130 mm	92.1 mm	Round	10 mm	Split	1	000000000	0000
10.0 mm	0.3937"	130 mm	92.1 mm	Round	10 mm	Split	5	000000000	00000
10.2 mm	0.4016"	133 mm	92.1 mm	Round	10.2 mm	Split	1	000000000	00000
10.2 mm	0.4016"	133 mm	92.1 mm	Round	10.2 mm	Split	5	000000000	00000
10.5 mm	0.4134"	133 mm	92.1 mm	Round	10.5 mm	Split	1	000000000	00000
10.5 mm	0.4134"	133 mm	92.1 mm	Round	10.5 mm	Split	5	000000000	00000
10.8 mm	0.4252"	140 mm	99.8 mm	Round	10.8 mm	Split	1	000000000	00000
11.0 mm	0.4331"	140 mm	99.8 mm	Round	11 mm	Split	1	000000000	00000
11.0 mm	0.4331"	140 mm	99.8 mm	Round	11 mm	Split	5	00000000	00000
11.2 mm	0.4409"	143 mm	106.4 mm	Round	11.2 mm	Split	1	000000000	00000
11.5 mm	0.4528"	143 mm	106.4 mm	Round	11.5 mm	Split	1	000000000	00000
11.8 mm	0.4646"	146 mm	109.5 mm	Round	11.8 mm	Split	1	000000000	00000
12.0 mm	0.4724"	149 mm	110.3 mm	Round	12 mm	Split	1	000000000	00000
12.0 mm	0.4724"	149 mm	110.3 mm	Round	12 mm	Split	5	000000000	00000
12.2 mm	0.4803"	149 mm	110.3 mm	Round	12.2 mm	Split	1	000000000	00000
12.5 mm	0.4921"	152 mm	113.1 mm	Round	12.5 mm	Split	1	000000000	00000
13.0 mm	0.5118"	152 mm	113.1 mm	Round	13 mm	Split	1	000000000	00000
13.0 mm	0.5118"	152 mm	113.1 mm	Round	13 mm	Split	5	000000000	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	000000000	0000


				5/64"	0.0781"	2"	1"	Round	5/64"	Split	1	000000000	0000
				3/32"	0.0938"	2 1/4"	1.25"	Round	3/32"	Split	1	000000000	0000
				7/64"	0.1094"	2 3/8"	1.31"	Round	7/64"	Split	1	000000000	0000
				1/8"	0.125"	2 1/2"	1.44"	Round	1/8"	Split	1	000000000	0000
				9/64"	0.1406"	2 5/8"	1.56"	Round	9/64"	Split	1	000000000	0000
				5/32"	0.1563"	2 3/4"	1.69"	Round	5/32"	Split	1	000000000	0000
				11/64"	0.1719"	2 7/8"	1.81"	Round	11/64"	Split	1	000000000	0000
				3/16"	0.1875"	3"	1.75"	Round/3-Flat	3/16"	Split	1	00000000	0000
				3/16"	0.1875"	3"	1.75"	Round/3-Flat	3/16"	Split	12	0000000	00000
				13/64"	0.2031"	3 1/8"	1.81"	Round/3-Flat	13/64"	Split	1	00000000	0000


				13/64"	0.2031"	3 1/8"	1.81"	Round/3-Flat	13/64"	Split	12	00000000	00000
				7/32"	0.2188"	3 1/4"	1.87"	Round/3-Flat	7/32"	Split	1	00000000	0000
				7/32"	0.2188"	3 1/4"	1.87"	Round/3-Flat	7/32"	Split	12	00000000	00000
				15/64"	0.2344"	3 3/8"	1.93"	Round/3-Flat	15/64"	Split	1	00000000	0000
				15/64"	0.2344"	3 3/8"	1.93"	Round/3-Flat	15/64"	Split	12	00000000	00000
				1/4"	0.25"	3 1/2"	1.87"	Round/3-Flat	1/4"	Split	1	00000000	0000
				1/4"	0.25"	3 1/2"	1.87"	Round/3-Flat	1/4"	Split	12	00000000	00000
				17/64"	0.2656"	3 5/8"	2"	Round/3-Flat	17/64"	Split	1	00000000	0000
				17/64"	0.2656"	3 5/8"	2"	Round/3-Flat	17/64"	Split	12	00000000	00000
				9/32"	0.2813"	3 3/4"	2.18"	Round/3-Flat	9/32"	Split	1	00000000	0000


				9/32"	0.2813"	3 3/4"	2.18"	Round/3-Flat	9/32"	Split	12	00000000	00000
				19/64"	0.2969"	3 7/8"	2.34"	Round/3-Flat	19/64"	Split	1	00000000	0000
				5/16"	0.3125"	4"	2.46"	Round/3-Flat	5/16"	Split	1	00000000	0000
				5/16"	0.3125"	4"	2.46"	Round/3-Flat	5/16"	Split	6	00000000	00000
				21/64"	0.3281"	4 1/8"	2.48"	Round/3-Flat	21/64"	Split	1	00000000	0000
				21/64"	0.3281"	4 1/8"	2.48"	Round/3-Flat	21/64"	Split	6	00000000	00000
				11/32"	0.3438"	4 1/8"	2.5"	Round/3-Flat	11/32"	Split	1	00000000	0000
				11/32"	0.3438"	4 1/8"	2.5"	Round/3-Flat	11/32"	Split	6	00000000	00000
				23/64"	0.3594"	4 1/4"	2.56"	Round/3-Flat	23/64"	Split	1	00000000	0000
				23/64"	0.3594"	4 1/4"	2.56"	Round/3-Flat	23/64"	Split	6	00000000	00000


				3/8"	0.375"	4 1/4"	2.56"	Round/3-Flat	3/8"	Split	1	00000000	0000
				3/8"	0.375"	4 1/4"	2.56"	Round/3-Flat	3/8"	Split	6	00000000	00000
				25/64"	0.3906"	4 3/8"	2.62"	Round/3-Flat	25/64"	Split	1	00000000	0000
				25/64"	0.3906"	4 3/8"	2.62"	Round/3-Flat	25/64"	Split	6	00000000	00000
				13/32"	0.4063"	4 3/8"	2.68"	Round/3-Flat	13/32"	Split	1	00000000	0000
				13/32"	0.4063"	4 3/8"	2.68"	Round/3-Flat	13/32"	Split	6	00000000	00000
				27/64"	0.4219"	4 1/2"	2.75"	Round/3-Flat	27/64"	Split	1	00000000	00000
				7/16"	0.4375"	4 1/2"	2.81"	Round/3-Flat	7/16"	Split	1	00000000	00000
				7/16"	0.4375"	4 1/2"	2.81"	Round/3-Flat	7/16"	Split	6	00000000	00000
				29/64"	0.4531"	4 5/8"	2.87"	Round/3-Flat	29/64"	Split	1	00000000	00000


				15/32"	0.4688"	4 3/4"	3"	Round/3-Flat	15/32"	Split	1	00000000	00000
				31/64"	0.4844"	4 7/8"	3.21"	Round/3-Flat	31/64"	Split	1	00000000	00000
				1/2"	0.5"	5"	3.34"	Round/3-Flat	1/2"	Split	1	00000000	00000
				1/2"	0.5"	5"	3.34"	Round/3-Flat	1/2"	Split	6	00000000	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	00000000	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	00000000	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	00000000	000000
	41	6.0-10.0 mm (increments of 0.1 mm)	Metric	Split Point	NAS907 Type B	Metal Case	00000000	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	00000000	0000000

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	00000000	000000


1/2"	4.31"	1.75"	Reduced Round	00000000	00000
9/16"	4.31"	1.75"	Reduced Round	00000000	00000
5/8"	4.31"	1.75"	Reduced Round	00000000	00000
11/16"	4.31"	1.75"	Reduced Round	00000000	00000
3/4"	4.31"	1.75"	Reduced Round	00000000	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	0000000	000000


				13.5	0.5315"	152	63.5	Reduced Round/3-Flat	1/2"	Split	0000000	00000
				14.0	0.5512"	152	63.5	Reduced Round/3-Flat	1/2"	Split	0000000	00000
				14.5	0.5709"	152	63.5	Reduced Round/3-Flat	1/2"	Split	0000000	00000
				15.0	0.5906"	152	63.5	Reduced Round/3-Flat	1/2"	Split	0000000	00000
				15.5	0.6102"	152	63.5	Reduced Round/3-Flat	1/2"	Split	0000000	00000
				16.0	0.6299"	152	63.5	Reduced Round/3-Flat	1/2"	Split	0000000	00000
				16.5	0.6496"	152	63.5	Reduced Round/3-Flat	1/2"	Split	0000000	00000
				17.0	0.6693"	152	63.5	Reduced Round/3-Flat	1/2"	Split	0000000	00000
				17.5	0.689"	152	63.5	Reduced Round/3-Flat	1/2"	Split	0000000	00000
				18.0	0.7087"	152	63.5	Reduced Round/3-Flat	1/2"	Split	0000000	00000


				18.5	0.7283"	152	63.5	Reduced Round/3-Flat	1/2"	Split	0000000	00000
				19.0	0.748"	152	63.5	Reduced Round/3-Flat	1/2"	Split	0000000	00000
				19.5	0.7677"	152	63.5	Reduced Round/3-Flat	1/2"	Split	0000000	00000
				20.0	0.7874"	152	63.5	Reduced Round/3-Flat	1/2"	Split	0000000	00000
				21.0	0.8268"	152	63.5	Reduced Round/3-Flat	1/2"	Split	0000000	00000
				22.0	0.8661"	152	63.5	Reduced Round/3-Flat	1/2"	Split	0000000	00000
				23.0	0.9055"	152	63.5	Reduced Round/3-Flat	1/2"	Split	0000000	00000
				24.0	0.9449"	152	63.5	Reduced Round/3-Flat	1/2"	Split	0000000	00000
				25.0	0.9843"	152	63.5	Reduced Round/3-Flat	1/2"	Split	0000000	00000

Hole-Enlarging Reduced-Shank 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	00000000	0000000