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Counterbores, Interchangeable Pilot

Interchangeable Pilot Straight Shank Counterbores

Counterbores. Straight Shank, with hole to receive the shank of an Interchangeable Pilot.
High Speed Steel.

These counterbores are intended to be used with an interchangeable PILOT installed; the pilot aligns the counterbore's cut with a pre-drilled hole.
Please note that pilots are not included with these counterbores. Pilots are purchased separately and are listed here: Pilots for Counterbores

Email us for availability of "64ths" sizes.
Quantity Price Model Description Diameter Length Shank Diam. Hole Diam. Range of Pilot Sizes

$19.00 CBSS-3/16
3/16" Straight Shank Counterbore w/ Pilot Hole, HSS, 1180-0005 3/16" 3" 15/64" 3/32" 1/8- 3/16"

$19.00 CBSS-7/32
7/32" Straight Shank Counterbore w/ Pilot Hole, HSS, 1180-0010 7/32" 3" 15/64" 3/32 1/8- 7/32

$17.55 CBSS-1/4
1/4" Straight Shank Counterbore w/ Pilot Hole, HSS, 1180-0015 1/4" 3-13/16" 15/64" 3/32 1/8- 3/16

$17.55 CBSS-9/32
9/32" Straight Shank Counterbore w/ Pilot Hole, HSS, 1180-0020 9/32" 3-13/16" 17/64" 3/32 1/8- 7/32

$17.85 CBSS-5/16
5/16" Straight Shank Counterbore w/ Pilot Hole, HSS, 1180-0025 5/16" 3-13/16" 19/64" 3/32 1/8- 1/4

$18.25 CBSS-11/32
11/32" Straight Shank Counterbore w/ Pilot Hole, HSS, 1180-0030 11/32" 3-13/16" 5/16" 3/32 1/8- 9/32

$18.25 CBSS-3/8
3/8" Straight Shank Counterbore w/ Pilot Hole, HSS, 1180-0035 3/8" 4-1/16" 5/16" 5/32 3/16- 5/16

$18.40 CBSS-13/32
13/32" Straight Shank Counterbore w/ Pilot Hole, HSS, 1180-0040 13/32" 4-1/16" 3/8" 5/32 3/16- 11/32

$18.40 CBSS-7/16
7/16" Straight Shank Counterbore w/ Pilot Hole, HSS, 1180-0045 7/16" 4-1/16" 3/8" 5/32 3/16- 3/8

$19.60 CBSS-15/32
15/32" Straight Shank Counterbore w/ Pilot Hole, HSS, 1180-0050 15/32" 4-5/16" 7/16" 3/16 1/4- 13/32

$19.60 CBSS-1/2
1/2" Straight Shank Counterbore w/ Pilot Hole, HSS, 1180-0055 1/2" 4-5/16" 7/16" 3/16 1/4- 7/16

$21.70 CBSS-17/32
17/32" Straight Shank Counterbore w/ Pilot Hole, HSS, 1180-0060 17/32" 4-5/16" 1/2" 3/16 1/4- 15/32

$21.70 CBSS-9/16
9/16" Straight Shank Counterbore w/ Pilot Hole, HSS, 1180-0065 9/16" 4-5/16" 1/2" 3/16 1/4- 1/2

$23.25 CBSS-19/32
19/32" Straight Shank Counterbore w/ Pilot Hole, HSS, 1180-0070 19/32" 5-1/8" 1/2" 3/16 1/4- 17/32

$23.25 CBSS-5/8
5/8" Straight Shank Counterbore w/ Pilot Hole, HSS, 1180-0075 5/8" 5-1/8" 1/2" 3/16 1/4- 9/16

$25.70 CBSS-21/32
21/32" Straight Shank Counterbore w/ Pilot Hole, HSS, 1180-0080 21/32" 5-1/8" 1/2" 3/16 1/4- 19/32

$25.70 CBSS-11/16
11/16" Straight Shank Counterbore w/ Pilot Hole, HSS, 1180-0085 11/16" 5-1/8" 1/2" 3/16 1/4- 5/8

$27.05 CBSS-23/32
23/32" Straight Shank Counterbore w/ Pilot Hole, HSS, 1180-0090 23/32" 5-3/8" 1/2" 1/4 3/16- 21/32

$27.05 CBSS-3/4
3/4" Straight Shank Counterbore w/ Pilot Hole, HSS, 1180-0095 3/4" 5-3/8" 1/2" 1/4 5/16- 11/16

$28.30 CBSS-25/32
25/32" Straight Shank Counterbore w/ Pilot Hole, HSS, 1180-0100 25/32" 5-3/8" 5/8" 1/4 5/16- 23/32

$28.30 CBSS-13/16
13/16" Straight Shank Counterbore w/ Pilot Hole, HSS, 1180-0105 13/16" 5-3/8" 5/8" 1/4 5/16- 3/4

$29.70 CBSS-27/32
27/32" Straight Shank Counterbore w/ Pilot Hole, HSS, 1180-0107 27/32" 5-3/8" 3/4" 1/4 5/16- 13/16

$29.70 CBSS-7/8
7/8" Straight Shank Counterbore w/ Pilot Hole, HSS, 1180-0110 7/8" 5-3/8" 3/4" 1/4 5/16-13/16

$31.10 CBSS-29/32
29/32" Straight Shank Counterbore w/ Pilot Hole, HSS, 1180-0112 29/32" 6-1/8" 3/4" 1/4 5/16-27/32

$31.10 CBSS-15/16
15/16" Straight Shank Counterbore w/ Pilot Hole, HSS, 1180-0115 15/16" 6-1/8" 3/4" 1/4 5/16-7/8

$33.20 CBSS-31/32
31/32" Straight Shank Counterbore w/ Pilot Hole, HSS, 1180-0118 31/32" 6-3/8" 3/4" 5/16 3/8-29/32

$35.65 CBSS-1
1" Straight Shank Counterbore w/ Pilot Hole, HSS, 1180-0120 1" 6-3/8" 3/4" 5/16 3/8-15/16

$45.75 CBSS-1-1/16
1-1/16" Straight Shank Counterbore w/ Pilot Hole, HSS, 1180-0125 1-1/16" 6-3/8" 3/4" 5/16 3/8-1

$46.95 CBSS-1-1/8
1-1/8" Straight Shank Counterbore w/ Pilot Hole, HSS, 1180-0130 1-1/8" 6-3/8" 1" 5/16 3/8-1 1/16

$49.50 CBSS-1-3/16
1-3/16" Straight Shank Counterbore w/ Pilot Hole, HSS, 1180-0135 1-3/16" 6-3/8" 1 5/16 3/8-1 1/8

$57.90 CBSS-1-1/4
1-1/4" Straight Shank Counterbore w/ Pilot Hole, HSS, 1180-0140 1-1/4" 6-5/8" 1" 3/8 7/16-1 3/16

$61.00 CBSS-1-5/16
1-5/16" Straight Shank Counterbore w/ Pilot Hole, HSS, 1180-0150 1-5/16" 6 5/8" 1 3/8 7/16-1 1/4

$66.10 CBSS-1-3/8
1-3/8" Straight Shank Counterbore w/ Pilot Hole, HSS, 1180-0155 1-3/8" 7-7/8" 1" 3/8 7/16-1 5/16

$74.00 CBSS-1-7/16
1-7/16" Straight Shank Counterbore w/ Pilot Hole, HSS, 1180-0160 1-7/16" 7-7/8" 1-1/4" 3/8 7/16-1 3/8

$74.00 CBSS-1-1/2
1-1/2" Straight Shank Counterbore w/ Pilot Hole, HSS, 1180-0165 1-1/2" 8-1/8" 1-1/4" 3/8 7/16-1 7/16

$93.00 CBSS-1-9/16
1-9/16" Straight Shank Counterbore w/ Pilot Hole, HSS, 1180-0170 1-9/16" 8-1/8" 1-1/4" 7/16 1/2-1 1/2

$93.00 CBSS-1-5/8
1-5/8" Straight Shank Counterbore w/ Pilot Hole, HSS, 1180-0175 1-5/8" 8-1/8" 1-1/4" 7/16 1/2-1 9/16

$100.20 CBSS-1-11/16
1-11/16" Straight Shank Counterbore w/ Pilot Hole, HSS, 1180-0180 1-11/16" 8-1/8" 1-1/4" 7/16 1/2-1 5/8

$100.20 CBSS-1-3/4
1-3/4" Straight Shank Counterbore w/ Pilot Hole, HSS, 1180-0185 1-3/4" 8-1/8" 1-1/4" 7/16 1/2-1 11/16

$110.00 CBSS-1-13/16
1-13/16" Straight Shank Counterbore w/ Pilot Hole, HSS, 1180-0190 1-13/16" 8-1/8" 1-1/2" 7/16 1/2-1 3/4

$110.00 CBSS-1-7/8
1-7/8" Straight Shank Counterbore w/ Pilot Hole, HSS, 1180-0195 1-7/8" 8-1/8" 1-1/2" 7/16 1/2-1 13/16

$124.60 CBSS-1-15/16
1-15/16" Straight Shank Counterbore w/ Pilot Hole, HSS, 1180-0200 1-15/16" 8-3/8" 1-1/2" 7/16 1/2-1 7/8

$124.60 CBSS-2
2" Straight Shank Counterbore w/ Pilot Hole, HSS, 1180-0205 2" 8-3/8" 1-1/2" 1/2 9/16-1 15/16

$193.00 CBSS-2-1/8
2-1/8" Straight Shank Counterbore w/ Pilot Hole, HSS, 1180-0206 2-1/8" 9-7/8" 1-1/2" 1/2 9/16-2 1/16

$206.00 CBSS-2-1/4
2-1/4" Straight Shank Counterbore w/ Pilot Hole, HSS, 1180-0207 2-1/4" 9-7/8" 1-1/2" 1/2 9/16-2 3/16

$221.00 CBSS-2-3/8
2-3/8" Straight Shank Counterbore w/ Pilot Hole, HSS, 1180-0208 2-3/8" 9-7/8" 1-3/4" 1/2 9/16-2 5/16

$235.00 CBSS-2-1/2
2-1/2" Straight Shank Counterbore w/ Pilot Hole, HSS, 1180-0209 2-1/2" 9-7/8" 1-3/4" 1/2 9/16-2 7/16

$287.00 CBSS-2-5/8
2-5/8" Straight Shank Counterbore w/ Pilot Hole, HSS, 1180-0210 2-5/8" 9-7/8" 1-3/4" 1/2 9/16-2 9/16

$304.00 CBSS-2-3/4
2-3/4" Straight Shank Counterbore w/ Pilot Hole, HSS, 1180-0211 2-3/4" 9-7/8" 1-3/4" 1/2 9/16-2 11/16

$317.00 CBSS-2-7/8
2-7/8" Straight Shank Counterbore w/ Pilot Hole, HSS, 1180-0212 2-7/8" 9-7/8" 1-3/4" 1/2 9/16-2 13/16

$328.00 CBSS-3
3" Straight Shank Counterbore w/ Pilot Hole, HSS, 1180-0213 3" 9-7/8" 1-3/4" 1/2 9/16-2 15/16

Interchangeable Pilot Taper Shank Counterbores

Counterbores. Taper Shank, with hole to receive the shank of an Interchangeable Pilot.
High Speed Steel.

These counterbores are intended to be used with an interchangeable PILOT installed; the pilot aligns the counterbore's cut with a pre-drilled hole.
Please note that pilots are not included with these counterbores. Pilots are purchased separately and are listed here: Pilots for Counterbores

Email us for availability of "64ths" sizes.
Quantity Price Model Description Diameter Length Overall Taper Shank Hole Diameter Range of Pilot Size

$18.40 CBTS-1/4
1/4" Taper Shank Counterbore w/ Pilot Hole, HSS, 1181-0005 1/4" 3 13/16 1 3/32 1/8- 3/16

$18.40 CBTS-9/32
9/32" Taper Shank Counterbore w/ Pilot Hole, HSS, 1181-0010 9/32" 3 13/16 1 3/32 1/8- 7/32

$18.90 CBTS-5/16
5/16" Taper Shank Counterbore w/ Pilot Hole, HSS, 1181-0015 5/16" 3 13/16 1 3/32 1/8- 1/4

$18.90 CBTS-11/32
11/32" Taper Shank Counterbore w/ Pilot Hole, HSS, 1181-0020 11/32" 3 13/16 1 3/32 1/8- 9/32

$18.90 CBTS-3/8
3/8" Taper Shank Counterbore w/ Pilot Hole, HSS, 1181-0025 3/8" 4 1/16 1 5/32 3/16- 5/16

$20.00 CBTS-13/32
13/32" Taper Shank Counterbore w/ Pilot Hole, HSS, 1181-0030 13/32" 4 1/16 1 5/32 3/16- 11/32

$20.00 CBTS-7/16
7/16" Taper Shank Counterbore w/ Pilot Hole, HSS, 1181-0035 7/16" 4 1/16 1 5/32 3/16- 3/8

$21.00 CBTS-15/32
15/32" Taper Shank Counterbore w/ Pilot Hole, HSS, 1181-0040 15/32" 4 5/16 1 3/16 1/4- 13/32

$25.10 CBTS-1/2
1/2" Taper Shank Counterbore w/ Pilot Hole, HSS, 1181-0045 1/2" 4 5/16 1 3/16 1/4- 7/16

$22.40 CBTS-17/32
17/32" Taper Shank Counterbore w/ Pilot Hole, HSS, 1181-0050 17/32" 4 5/16 1 3/16 1/4- 15/32

$28.00 CBTS-9/16
9/16" Taper Shank Counterbore w/ Pilot Hole, HSS, 1181-0055 9/16" 4 5/16 1 3/16 1/4- 1/2

$25.20 CBTS-19/32
19/32" Taper Shank Counterbore w/ Pilot Hole, HSS, 1181-0065 19/32" 5 1/8 1 3/16 1/4- 17/32

$25.20 CBTS-5/8
5/8" Taper Shank Counterbore w/ Pilot Hole, HSS, 1181-0070 5/8" 5 1/8 2 3/16 1/4- 9/16

$29.20 CBTS-21/32
21/32" Taper Shank Counterbore w/ Pilot Hole, HSS, 1181-0072 21/32" 5 1/8 2 3/16 1/4- 19/32

$29.20 CBTS-11/16
11/16" Taper Shank Counterbore w/ Pilot Hole, HSS, 1181-0075 11/16" 5 1/8 2 3/16 1/4- 5/8

$29.20 CBTS-23/32
23/32" Taper Shank Counterbore w/ Pilot Hole, HSS, 1181-0080 23/32" 5 3/8 2 1/4 5/16- 21/32

$34.80 CBTS-3/4
3/4" Taper Shank Counterbore w/ Pilot Hole, HSS, 1181-0085 3/4" 5 3/8 2 1/4 5/16- 11/16

$30.70 CBTS-25/32
25/32" Taper Shank Counterbore w/ Pilot Hole, HSS, 1181-0090 25/32" 5 3/8 2 1/4 5/16- 23/32

$30.70 CBTS-13/16
13/16" Taper Shank Counterbore w/ Pilot Hole, HSS, 1181-0095 13/16" 5 3/8 2 1/4 5/16- 3/4

$32.20 CBTS-7/8
7/8" Taper Shank Counterbore w/ Pilot Hole, HSS, 1181-0100 7/8" 5 3/8 2 1/4 5/16- 13/16

$40.10 CBTS-15/16
15/16" Taper Shank Counterbore w/ Pilot Hole, HSS, 1181-0105 15/16" 6 1/8 3 1/4 5/16- 7/8

$40.10 CBTS-1
1" Taper Shank Counterbore w/ Pilot Hole, HSS, 1181-0110 1" 6 3/8 3 5/16 3/8- 15/16

$55.70 CBTS-1-1/16
1-1/16" Taper Shank Counterbore w/ Pilot Hole, HSS, 1181-0115 1-1/16" 6 3/8 3 5/16 3/8-1

$48.00 CBTS-1-1/8
1-1/8" Taper Shank Counterbore w/ Pilot Hole, HSS, 1181-0120 1-1/8" 6 3/8 3 5/16 3/8-1 1/16

$60.00 CBTS-1-3/16
1-3/16" Taper Shank Counterbore w/ Pilot Hole, HSS, 1181-0125 1-3/16" 6 3/8 3 5/16 3/8-1 1/8

$61.30 CBTS-1-1/4
1-1/4" Taper Shank Counterbore w/ Pilot Hole, HSS, 1181-0130 1-1/4" 6 5/8 3 3/8 7/16-1 3/16

$62.50 CBTS-1-5/16
1-5/16" Taper Shank Counterbore w/ Pilot Hole, HSS, 1181-0135 1-5/16" 6 5/8 3 3/8 7/16-1 1/4

$67.40 CBTS-1-3/8
1-3/8" Taper Shank Counterbore w/ Pilot Hole, HSS, 1181-0140 1-3/8" 6 5/8 3 3/8 7/16-1 5/16

$72.80 CBTS-1-7/16
1-7/16" Taper Shank Counterbore w/ Pilot Hole, HSS, 1181-0150 1-7/16" 7 7/8 4 3/8 7/16-1 3/8

$75.70 CBTS-1-1/2
1-1/2" Taper Shank Counterbore w/ Pilot Hole, HSS, 1181-0155 1-1/2" 7 7/8 4 3/8 7/16-1 7/16

$98.90 CBTS-1-9/16
1-9/16" Taper Shank Counterbore w/ Pilot Hole, HSS, 1181-0160 1-9/16" 8 1/8 4 7/16 1/2-1 1/2

$99.90 CBTS-1-5/8
1-5/8" Taper Shank Counterbore w/ Pilot Hole, HSS, 1181-0157 1-5/8" 8 1/8 4 7/16 1/2-1 9/16

$108.00 CBTS-1-11/16
1-11/16" Taper Shank Counterbore w/ Pilot Hole, HSS, 1181-0165 1-11/16" 8 1/8 4 7/16 1/2-1 5/8

$108.00 CBTS-1-3/4
1-3/4" Taper Shank Counterbore w/ Pilot Hole, HSS, 1181-0170 1-3/4" 8 1/8 4 7/16 1/2-1 11/16

$118.40 CBTS-1-13/16
1-13/16" Taper Shank Counterbore w/ Pilot Hole, HSS, 1181-0175 1-13/16" 8 1/8 4 7/16 1/2-1 3/4

$118.40 CBTS-1-7/8
1-7/8" Taper Shank Counterbore w/ Pilot Hole, HSS, 1181-0180 1-7/8" 8 1/8 4 7/16 1/2-1 13/16

$133.80 CBTS-1-15/16
1-15/16" Taper Shank Counterbore w/ Pilot Hole, HSS, 1181-0185 1-15/16" 8 1/8 4 7/16 1/2-1 7/8

$133.80 CBTS-2
2" Taper Shank Counterbore w/ Pilot Hole, HSS, 1181-0190 2" 8 3/8 4 1/2 9/16-1 15/16

$169.10 CBTS-2-1/8
2-1/8" Taper Shank Counterbore w/ Pilot Hole, HSS, 1181-0200 2-1/8" 9 7/8 5 1/2 9/16-2 1/16

$178.50 CBTS-2-1/4
2-1/4" Taper Shank Counterbore w/ Pilot Hole, HSS, 1181-0210 2-1/4" 9 7/8 5 1/2 9/16-2 3/16

$194.00 CBTS-2-3/8
2-3/8" Taper Shank Counterbore w/ Pilot Hole, HSS, 1181-0220 2-3/8" 9 7/8 5 1/2 9/16-2 5/16

$194.00 CBTS-2-1/2
2-1/2" Taper Shank Counterbore w/ Pilot Hole, HSS, 1181-0230 2-1/2" 9 7/8 5 1/2 9/16-2 7/16

$208.00 CBTS-2-5/8
2-5/8" Taper Shank Counterbore w/ Pilot Hole, HSS, 1181-0240 2-5/8" 9 7/8 5 1/2 9/16-2 9/16

$242.00 CBTS-2-3/4
2-3/4" Taper Shank Counterbore w/ Pilot Hole, HSS, 1181-0245 2-3/4" 9 7/8 5 1/2 9/16-2 11/16

$266.00 CBTS-2-7/8
2-7/8" Taper Shank Counterbore w/ Pilot Hole, HSS, 1181-0250 2-7/8" 9 7/8 5 1/2 9/16-2 13/16

$274.00 CBTS-3
3" Taper Shank Counterbore w/ Pilot Hole, HSS, 1181-0255 3" 9 7/8 5 1/2 9/16-2 15/16