Cap Screw HSS Counterbore

• Application: Drilling Machine
• Standard: Standard
• Coating: Coating
• Material: High Speed Steel
• Size: M1 to M12
• Type: Cutter
• Model NO.: standard
• Work Type: Spot Facing Work
• Transport Package: Plastic Box
• Specification: M1 to M12
• Trademark: stc
• Origin: Zhenjiang
• HS Code: 82075090
• Production Capacity: 10000PCS Per Year

Product Description

 Counterbores with straight shank and fixed pilot are made from high speed steel.

They are used for counterboring holes for screwa with flat fillister hand in normal materials.

 It is possible to counterbore prebored holes for screw body.

 

STC046, HSS SOLID CAP SCREW COUNTERBORE, DIN373

3-Flute, Material: HSS, HSS-E.

Pict

Screw Size

Cutting Diameter

Pilot Diameter

Shank Diameter

Total Length

Flute Number

1

2.2

0.75

2.2

45

2

1.2

2.5

0.95

2.5

45

2

1.4

2.8

1.1

2.8

45

2

1.6

3.3

1.25

3.3

56

2

1.8

3.8

1.45

3.8

56

2

2

4.3

1.6

4.3

56

2

2.5

5

2.05

5

56

2

3

6

2.5

5

71

3

3.5

6.5

2.9

5

71

3

4

8

3.3

5

71

3

4.5

9

3.7

8

80

3

5

10

4.2

8

80

3

6

11

5

8

80

3

7

13

6

12.5

100

3

8

15

6.8

12.5

100

3

9

16

7.8

12.5

100

3

10

18

8.5

12.5

100

3

12

20

10.2

12.5

100

3

STC044-M, COUNTERSINKS, Straight Shank

GB/T 4258-2004, GOST 14953-80

Pict

Included Angle: 60°, 90°, 120°

Size

Small End Diameter

Shank Diameter

Size

Small End Diameter

Shank Diameter

8

1.6

8

16

3.2

10

10

2

8

20

4

10

12.5

2.5

8

25

7

10

STC044-MT, COUNTERSINKS, Taper Shank

Bitmap

GB/T 1143-2004, GOST 14953-80

Included Angle: 60°, 90°, 120°

Size

Small End Diameter

M.T. Shank

Size

Small End Diameter

M.T. Shank

16

3.2

1

40

12.5

3

20

4

2

50

16

3

25

7

2

63

20

4

31.5

9

2

80

25

4