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9. COMBINED DRILLS & COUNTER SINKS AS PER ANSI B94.11M

(A) PLAIN TYPE

combined drills & counter sinks
  • Used for Producing Center holes in Components or Workpieces which require machining between Centers.
  • 60° Countersink Angle fits all Standard Centers.
  • Available in Plain type and Bell Type.
  • Additional small 120° Chamfer on the Bell Type Protects the Edges of the 60° Center Hole.
  • Plain Type available in 60°, 82° or 90° Angle, also available with Standard and Long Lengths.
  • Made from High Speed Steel.
Size
Body Dia.
Drill Dia.
Overall Length
Cat No For

A

D

L

60°

82°

90°

00

1/8”

.025”

1-1/8”

MDC-2852

-

-

0

1/8”

1/32”

1-1/8”

MDC-2853

-

-

1

1/8”

3/64”

1-1/4”

MDC-2854

MDC-2866

MDC-2876

2

3/16”

5/64”

1-7/8”

MDC-2855

MDC-2867

MDC-2877

3

1/4”

7/64”

2”

MDC-2856

MDC-2868

MDC-2878

4

5/16”

1/8”

2-1/8”

MDC-2857

MDC-2869

MDC-2879

4-1/2

3/8”

9/64”

2-1/2”

MDC-2858

 -

-

5

7/16”

3/16”

2-3/4”

MDC-2859

MDC-2870

MDC-2880

6

1/2”

7/32”

3”

MDC-2860

MDC-2871

MDC-2881

7

5/8”

1/4”

3-1/4”

MDC-2861

MDC-2872

MDC-2882

8

3/4”

5/16”

3-1/2”

MDC-2862

MDC-2873

MDC-2883

9

7/8”

11/32”

3-5/8”

MDC-2863

-

-

10

1”

3/8”

3-3/4”

MDC-2864

-

-

Sets of Plain Type

Range No. of Pcs.
Cat No. For

60°

82°

90°

1 to 5

5

MDC-2908

MDC-2874

MDC-2884

(B) BELL TYPE 60°

bell type 60°

Size

Body Dia. A

Drill Dia. D

Bell Dia. E

Overall Length L

Cat No.

11

1/8”

3/64”

.100”

1-1/4”

MDC-2911

12

3/16”

1/16”

.150”

1-7/8”

MDC-2912

13

1/4”

3/32”

.200”

2”

MDC-2913

14

5/16”

7/64”

.250”

2-1/8”

MDC-2914

15

7/16

5/32”

.350”

2-3/4”

MDC-2915

16

1/2”

3/16”

.400”

3”

MDC-2916

17

5/8”

7/32”

.500”

3-1/4”

MDC-2917

18

3/4”

1/4”

.600”

3-1/2”

MDC-2918

Range

No. of Pcs.

Cat No..

# 11 TO # 15

5

MDC-2919

(C) PLAIN TYPE 60° LONG SERIES

plain type 60° long series

Size

Body Dia.

Drill Dia

Overall Length

Cat No.

1

1/8”

3/64”

3”

MDC-2886

1

1/8”

3/64”

4”

MDC-2887

1

1/8”

3/64”

5”

MDC-2888

1

1/8”

3/64”

6”

MDC-2889

2

3/16”

5/64”

3”

MDC-2890

2

3/16”

5/64”

4”

MDC-2891

2

3/16”

5/64”

5”

MDC-2892

2

3/16”

5/64”

6”

MDC-2893

3

1/4”

7/64”

4”

MDC-2894

3

1/4”

7/64”

5”

MDC-2895

3

1/4”

7/64”

6”

MDC-2896

4

5/16”

1/8”

4”

MDC-2897

4

5/16”

1/8”

5”

MDC-2898

4

5/16”

1/8”

6”

MDC-2899

5

7/16”

3/16”

4”

MDC-2900

5

7/16”

3/16”

5”

MDC-2901

5

7/16”

3/16”

6”

MDC-2902

6

1/2”

7/32”

4”

MDC-2903

6

1/2”

7/32”

5”

MDC-2904

6

1/2”

7/32”

6”

MDC-2905

7

5/8”

1/4”

6”

MDC-2906

8

3/4”

5/16”

6”

MDC-2907

Range

No. of Pcs.

Cat No..

# 11 TO # 15

5

MDC-2919