Core Drills FOUR FLUTE - STRAIGHT SHANK
   
Core Drills
FOUR FLUTE - STRAIGHT SHANK
MADE IN THE USA BY MICHIGAN DRILL
  • Premium grade HSS
  • Additional sizes and lengths are available
  • Used to enlarge and straighten cored, punched, or drilled holes.
  • Because of their rigidity, these drills generate closer tolerance holes and better finishes than standard drills. They may be used to enlarge holes up to 60% of tool diameter.
  • Click here to chat with sales

Core Drills
HSS Core Drills
Diameter Dec. Equiv. Flute Length Overall Part Number Your Cost Order Quantity
15/64"
.2344
3-3/4"
6-1/8"
MIC-422-15/64
$ 16.81
1/4"
.2500
3-3/4"
6-1/8"
MIC-422-1/4
$ 16.33
17/64"
.2656
3-7/8"
6-1/4"
MIC-422-17/64
$ 17.81
9/32"
.2812
3-7/8"
6-1/4"
MIC-422-9/32
$ 17.27
5/16"
.3125
4"
6-3/4"
MIC-422-5/16
$ 17.53
21/64"
.3281
4-1/8"
6-1/2"
MIC-422-21/64
$ 20.97
11/32"
.3438
4-1/8"
6-1/2"
MIC-422-11/32
$ 18.73
3/8"
.3750
4-1/4"
6-3/4"
MIC-422-3/8
$ 19.27
13/32"
.4062
4-3/8"
7"
MIC-422-13/32
$ 21.16
27/64"
.4219
4-5/8"
7-1/4"
MIC-422-27/64
$ 23.00
7/16"
.4375
4-5/8"
7-1/4"
MIC-422-7/16
$ 21.16
29/64"
.4531
4-3/4"
7-1/2"
MIC-422-29/64
$ 24.64
15/32"
.4688
4-3/4"
7-1/2"
MIC-422-15/32
$ 23.64
1/2"
.5000
4-3/4"
7-3/4"
MIC-422-1/2
$ 24.16
33/64"
.5165
4-3/4"
8"
MIC-422-33/64
$ 27.00
17/32"
.5312
4-3/4"
8"
MIC-422-17/32
$ 25.31
9/16"
.5625
4-7/8"
8-1/4"
MIC-422-9/16
$ 26.63
19/32"
.5938
4-7/8"
8-3/4"
MIC-422-19/32
$ 32.03
5/8"
.6250
4-7/8"
8-3/4"
MIC-422-5/8
$ 33.91
41/64"
.6406
5-1/8"
9"
MIC-422-41/64
$ 38.37
21/32"
.6562
5-1/8"
9"
MIC-422-21/32
$ 36.30
11/16"
.6875
5-3/8"
9-1/4"
MIC-422-11/16
$ 38.89
23/32"
.7188
5-5/8"
9-1/2"
MIC-422-23/32
$ 38.30
3/4"
.7500
5-7/8"
9-3/4"
MIC-422-3/4
$ 40.89
49/64"
.7656
6"
9-7/8"
MIC-422-49/64
$ 51.61
25/32"
.7812
6"
9-7/8"
MIC-422-25/32
$ 48.79
13/16"
.8125
6-1/8"
10"
MIC-422-13/16
$ 55.50
27/32"
.8438
6-1/8"
10"
MIC-422-27/32
$ 57.91
7/8"
.8750
6-1/8"
10"
MIC-422-7/8
$ 55.39
57/64"
.8906
6-1/8"
10"
MIC-422-57/64
$ 61.47
29/32"
.9062
6-1/8"
10"
MIC-422-29/32
$ 58.93
15/16"
.9375
6-1/8"
10-3/4"
MIC-422-15/16
$ 65.47
31/32"
.9688
6-3/8"
11"
MIC-422-31/32
$ 73.30
1"
1.0000
6-3/8"
11"
MIC-422-1
$ 70.04
1-1/32"
1.0312
6-1/2"
11-1/8"
MIC-422-1-1/32
$106.01
1-1/16"
1.0625
6-5/8"
11-1/4"
MIC-422-1-1/16
$107.24
1-3/32"
1.0925
6-7/8"
11-1/2"
MIC-422-1-3/32
$108.63
1-1/8"
1.1250
7-1/8"
11-3/4"
MIC-422-1-1/8
$111.11
1-9/64"
1.1406
7-1/4"
11-7/8"
MIC-422-1-9/64
$113.40
1-5/32"
1.1562
7-1/4"
11-7/8"
MIC-422-1-5/32
$117.36
1-3/16"
1.1875
7-3/8"
12"
MIC-422-1-3/16
$160.56
1-7/32"
1.2188
7-1/2"
12-1/8"
MIC-422-1-7/32
$126.54
1-1/4"
1.2500
7-7/8"
12-1/2"
MIC-422-1-1/4
$130.81
1-9/32"
1.2812
8-1/2"
14-1/8"
MIC-422-1-9/32
$152.03
1-5/16"
1.3125
8-5/8"
14-1/7"
MIC-422-1-5/16
$160.56
1-11/32"
1.3438
8-3/4"
14-3/8"
MIC-422-1-11/32
$165.33
1-3/8"
1.3750
8-7/8"
14-1/2"
MIC-422-1-3/8
$169.81
1-13/32"
1.4062
9"
14-5/8"
MIC-422-1-13/32
$173.71
1-7/16"
1.4375
9-1/8"
14-3/8"
MIC-422-1-7/16
$181.03
1-15/32"
1.4688
9-1/4"
14-7/8"
MIC-422-1-15/32
$188.37
1-1/2"
1.5000
9-3/8"
15"
MIC-422-1-1/2
$198.23
1-9/16"
1.5625
9-5/8"
15-1/4"
MIC-422-1-9/16
$232.49
1-5/8"
1.6250
9-7/8"
15-5/8"
MIC-422-1-5/8
$258.10
1-11/16"
1.6875
10-1/8"
16"
MIC-422-1-11/16
$297.00
1-3/4"
1.7500
10-1/2"
16-1/4"
MIC-422-1-3/4
$311.19
1-49/64"
1.7656
10-1/2"
16-1/4"
MIC-422-1-49/64
$344.14
1-13/16"
1.1875
10-1/2"
16-1/4"
MIC-422-1-13/16
$340.37
1-7/8"
1.8750
10-5/8"
16-1/4"
MIC-422-1-7/8
$337.27
1-15/16"
1.9375
10-3/4"
16-5/8"
MIC-422-1-15/16
$358.37
2"
2.0000
10-3/4"
17-1/4"
MIC-422-2
$376.79

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