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Home / Products / Screws / Tapping Screws / ASME B18.6.5M (T11):2000 Metric Countersunk Head Square Drive Tapping Screw

ASME B18.6.5M (T11):2000 Metric Countersunk Head Square Drive Tapping Screw

ASME B18.6.5M (T11):2000 Metric Countersunk Head Square Drive Tapping Screw uses metric dimensions, a countersunk head, and a square drive, making it suitable for applications requiring strong drive engagement, a flush surface, and tapping capability.

The square drive provides good tool retention during assembly, reducing slipping and improving torque stability. The countersunk head allows a lower installed profile, while the tapping thread forms its mating thread in sheet metal or plastic pilot holes.

This product is suitable for export equipment, metal panels, plastic parts, furniture hardware, and light structural components. Different materials, finishes, and point forms can be configured to meet corrosion resistance, assembly efficiency, and appearance requirements.

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PREV：ASME/ANSI B18.6.3:2010 Oval Countersunk Head Phillips Tapping Screw NEXT：ISO 14585:2011 Pan Head Torx Tapping Screw

Dimensions unit: mm

Thread size d

ST2.9

ST3.5

ST4.2

ST4.8

ST5.5

ST6.3

ST8

ST9.5

P

Pitch

1

1.3

1.4

1.6

1.8

1.8

2.1

2.1

ds

Max.

-

-

-

-

-

-

-

-

Min.

-

-

-

-

-

-

-

-

dk

Max.

5.5

7.3

8.4

9.3

10.3

11.3

15.8

18.3

Min.

5.2

6.9

8

8.9

9.9

10.9

15.4

17.8

k

Max.

1.7

2.3

2.6

2.8

3

3.1

4.6

5.2

L1

Max.

-

-

-

-

-

-

-

-

Min.

-

-

-

-

-

-

-

-

r

Max.

1.2

1.4

1.6

2

2.2

2.4

3.2

4

Min.

0.6

0.7

0.8

1

1.1

1.2

1.6

2

s

Reference value

1.78

2.31

2.84

2.84

3.38

3.38

4.85

4.85

T

Reference value

1.68

2.44

2.92

3.23

4.01

4.01

4.93

4.93

b

Min.

17

21

25

29

33

38

38

38

Slot number

0

1S

2S

2R

3R

3R

4R

4R

t

Max.

0.97

1.4

1.61

1.91

2.42

2.42

2.54

2.54

Min.

0.71

1.01

1.21

1.52

2.03

2.03

2.15

2.15

Thread and end type

AB,B,BF,BT

AB,B,BF,BT

AB,B,BF,BT

AB,B,BF,BT

AB,B,BF,BT

AB,B,BF,BT

AB,B,BF,BT

AB,B,BF,BT

  

Thread size d

M2.5

M3

M3.5

M4

M5

M6

M8

M10

P

Pitch

0.45

0.5

0.6

0.7

0.8

1

1.25

1.5

ds

Max.

2.5

3

3.5

4

5

6

8

10

Min.

2.36

2.86

3.32

3.82

4.82

5.82

7.78

9..78

dk

Max.

4.7

5.5

7.3

8.4

9.3

11.3

15.8

18.3

Min.

4.4

5.2

6.9

8

8.9

10.9

15.4

17.8

k

Max.

1.5

1.7

2.3

2.7

2.7

3.3

4.6

5

L1

Max.

0.55

0.6

0.7

0.8

9

1.1

1.4

1.7

Min.

0.35

0.4

0.5

0.6

0.7

0.9

1.1

1.3

r

Max.

1

1.2

1.4

1.6

2

2.4

3.2

4

Min.

0.5

0.6

0.7

0.8

1

1.2

1.6

2

s

Reference value

1.78

1.78

2.31

2.84

2.84

3.38

4.85

4.85

T

Reference value

1.68

1.68

2.44

2.92

3.23

4.01

4.93

4.93

b

Min.

15

18

21

24

30

38

38

38

Slot number

0

0

1S

2S

2R

3R

4R

4R

t

Max.

0.97

0.97

1.4

1.61

1.91

2.42

2.54

2.54

Min.

0.71

0.71

1.01

1.21

1.52

2.03

2.15

2.15

Thread and end type

D,F,T

D,F,T

D,F,T

D,F,T

D,F,T

D,F,T

D,F,T

D,F,T

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