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Steel Types
High-Speed-Steel-Step-Drill
SD9

SD9

To cut woods, plastics, and metals

For high production in woods, plastics and metals. Made of High Speed Steel. 

With 82 degree included angle or 180 degree flat step.

Drill and Countersink or Counterbore in one operation, clearance for the head and body of various types of screw.

Flutes are less likely to clog compared with two-piece Countersink and Drill combination particularly in materials such as aluminum.

Stock Sizes are available for immediate delivery.

Step-Drill-Diagram1

Stock Sizes and stock numbers

SD9F

SD9F

82 Angled Step

Standard Dimensions

180

Flat Step

Stock No.

Degree

Screw Size

Major Diameter A

Minor Diameter B

Pilot Length C

Flute Length D

Overall Length E

Shank Size F

Degree

Stock No.

SD2

82

2

3/16

.090

3/16

1-1/8

2-3/16

3/16

180

SD2F

SD3

82

3

7/32

.103

3/16

1-1/4

2-3/8

7/32

180

SD3F

SD4

82

4

15/64

.116

3/16

1-5/16

2-7/16

15/64

180

SD4F

SD5

82

5

17/64

.129

1/4

1-7/16

2-5/8

1/4

180

SD5F

SD6

82

6

19/64

.142

1/4

1-9/16

2-3/4

1/4

180

SD6F

SD7

82

7

21/64

.155

1/4

1-11/16

2-15/16

1/4

180

SD7F

SD8

82

8

11/32

.168

1/4

1-11/16

3

1/4

180

SD8F

SD9

82

9

3/8

.182

1/4

1-13/16

3-1/8

3/8

180

SD9F

SD10

82

10

13/32

.195

1/4

1-15/16

3-5/16

3/8

180

SD10F

SD12

82

12

29/64

.221

5/16

2-1/8

3-9/16

3/8

180

SD12F

SD14

82

14 or 1/4

1/2

.255

5/16

2-1/4

3-3/4

1/2

180

SD14F

SD16

82

16 or 9/32

9/16

.286

5/16

2-1/2

5

1/2

180

SD16F

SD18

82

18 or 5/16

5/8

.317

3/8

2-1/2

5

1/2

180

SD18F

SD20

82

20

11/16

.328

3/8

2-1/2

5

1/2

180

SD20F

SD24

82

24 or 3/8

3/4

.380

3/8

2-1/2

5

1/2

180

SD24F

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