HSS Subland Step Drill Bits

• Customization: Available
• Customized: Customized
• Standard: DIN, JIS, AISI
• Model NO.: metric and inch
• Length: Jobber-length
• Type: Center Drill Bit
• Material: High Carbon Steel
• Usage: Metal Drilling
• Transport Package: Plastic Box
• Specification: 1mm to 8mm
• Trademark: stc
• Origin: Jiangsu
• HS Code: 8207509000
• Production Capacity: 3000PCS/Month

Product Description

 

STC027B, SUBLAND TWIST DRILL

STC027B1, 90° Subland drill with parallel shank,  DIN8374

STC027B2, 90° Subland drill with taper shank,  DIN8375

Major Diameter

Minor Diameter

Overall Length

Flute Length

Step Length

Screw Size

Major Diameter

Minor Diameter

Overall Length

Flute Length

Step Length

Screw Size

Morse Taper

6

3.2

93

57

9

M3

11

5.5

175

94

13

M5

1

8

4.3

117

75

11

M4

13

6.6

182

101

15

M6

1

10

5.3

133

87

13

M5

17.2

9

228

130

19

M8

2

11.5

6.4

142

94

15

M6

21.5

11

248

150

23

M10

2

15

8.4

169

114

19

M8

19

10.5

198

135

23

M10

Pict

STC027B3 180° Subland drill with parallel shank,  DIN8376

STC027B4 180° Subland drill with taper shank,  DIN8377

Major Diameter

Minor Diameter

Overall Length

Flute Length

Step Length

Screw Size

Major Diameter

Minor Diameter

Overall Length

Flute Length

Step Length

Screw Size

Morse Taper

6

3.4

93

57

9

M3

10

5.5

168

87

13

M5

1

8

4.5

117

75

11

M4

11

6.6

175

94

15

M6

1

10

5.5

133

87

13

M5

15

9

212

114

19

M8

2

11

6.6

142

94

15

M6

18

11

228

130

23

M10

2

15

9

169

114

19

M8

20

14

238

140

27

M12

3

18

11

191

130

23

M10

24

16

281

160

31

M14

3

26

18

286

165

35

M16

3

Pict

30

20

296

175

39

M18

3

33

22

334

185

43

M20

3

STC027A1 DRILL & COUNTERBORING CAP SCREW

Major Diameter

Minor Diameter

Overall Length

Flute Length

Step Length

Screw Size

7/32"

0.136

3-3/4"

2-1/2"

3/8"

NO.4

0.228

0.141

3-7/8"

2-5/8"

3/8"

NO.5

STC027A3 DRILL 45° CHAMFERED HOLE TO BE TAPPED

1/4"

0.15

4"

2-3/4"

1/2'

NO.6

Major Diameter

Minor Diameter

Overall Length

Flute Length

Step Length

Screw Size

L

0.178

4-1/4"

2-15/16"

1/2"

N0.8

Q

0.204

4-3/4"

3-7/16"

5/8"

NO.10

0.1285"

0.089"

2-3/4"

1-5/8"

3/8"

4-40

13/32"

9/32"

5-1/4"

3-7/8"

11/16"

1/4"

9/64"

0.101"

2-7/8"

1-3/4"

1/2"

5-40

1/2"

11/32"

6"

4-1/2"

3/4"

5/16"

5/32"

0.109"

3-1/8"

2"

1/2"

6-32

19/32"

13/32"

7-1/8"

5-3/16"

7/8"

3/8"

3/16"

0.136"

3-1/2"

2-15/16"

1/2"

8-32

11/16"

15/32"

7-5/8"

5-5/8"

1"

7/16"

3/16"

0.136"

3-1/2"

2-15/16"

1/2"

8-36

25/32"

17/32"

5-1/8"

3-1/4"

1"

1/2"

1/4"

0.152"

4"

2-3/4"

5/8"

10-24

31/32"

21/32"

5-7/8"

3-7/8"

1"

5/8"

1/4"

0.161"

4"

2-3/4"

5/8"

10-32

9/32"

0.179"

4-1/4"

2-15/16"

11/16"

12-24

21/64"

0.204"

4-5/8"

3-5/16"

13/16"

1/4-20

21/64"

0.218"

4-5/8"

3-5/16"

13/16"

1/4-28

STC027A2 DRILL & COUNTERBORING 82° FLAT HEAD

13/32"

0.261"

5-1/4"

3-7/8"

15/16"

5/16-18

Major Diameter

Minor Diameter

Overall Length

Flute Length

Step Length

Screw Size

13/32"

0.272"

5-1/4"

3-7/8"

15/16"

5/16-24

31/64"

0.316"

5-7/8"

4-3/8"

1"

3/8-16

15/64"

0.116"

3-7/8"

2-5/8"

3/8"

NO.4

31/64"

0.339"

5-7/8"

4-3/8"

1"

3/8-24

F"

0.128"

4-1/8"

2-7/8"

3/8"

NO.5

17/32"

0.375"

6-5/8"

4-13/16"

1-1/16"

7/16-14

9/32"

0.142"

4-1/4"

2-15/16"

1/2"

NO.6

17/32"

0.390"

6-5/8"

4-13/16"

1-1/16"

7/16-20

Q

0.169"

4-3/4"

3-7/16"

1/2"

N0.8

5/8"

0.437"

7-1/8"

5-3/16"

1-1/16"

1/2-13

W

0.196"

5-1/8"

3-3/4"

5/8"

NO.10

5/8"

0.452"

7-1/8"

5-3/16"

1-1/16"

1/2-20

1/2"

0.257"

6"

4-1/2"

11/16"

1/4"

3/4"

0.531"

7-5/8"

5-5/8"

1-1/16"

5/8-11

5/8"

0.320"

7-1/8"

5-3/16"

3/4"

5/16"

3/4"

0.383"

7-5/8"

5-5/8"

7/8"

3/8"

13/16"

0.446"

5-1/4"

3-3/8"

1"

7/16"

7/8"

0.510"

5-1/2"

3-1/2'

1"

1/2"