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Home / Products / Screws / Drilling Screws / DIN 7504 (R):1995 Oval Countersunk Head Phillips Self-Drilling Tapping Screw

DIN 7504 (R):1995 Oval Countersunk Head Phillips Self-Drilling Tapping Screw

DIN 7504 (R):1995 Oval Countersunk Head Phillips Self-Drilling Tapping Screw combines a Phillips oval countersunk head, drill point, and tapping thread and is suitable for applications needing a partially recessed finished appearance and fast field drilling installation.

The oval countersunk head creates a rounded transition on the surface, while the self-drilling design simplifies preparation for light metal and panel materials. Compared with ordinary fasteners, this form places more emphasis on controllable installation, surface protection, and efficient management of matching parts for engineering projects requiring stable supply.

It is commonly used in building cladding panels, equipment guards, metal trims, light steel accessories, and repair installation. According to drawings or service conditions, material, coating, drill point length, and packaging options can be selected to improve overall fastening performance and service life.

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Dimensions unit: inch 

Thread size

ST2.9

ST3.5

ST4.2

ST4.8

ST5.5

ST6.3

P

Pitch

1.1

1.3

1.4

1.6

1.8

1.8

a

Max.

1.1

1.3

1.4

1.6

1.8

1.8

dk

Max.

5.5

7.3

8.4

9.3

10.3

11.3

Min.

5.2

6.9

8

8.9

9.9

10.9

f

≈

0.7

0.8

1

1.2

1.3

1.4

k

Max.

1.7

2.35

2.6

2.8

3

3.15

r

Max.

1.2

1.4

1.6

2

2.2

2.4

R

≈

6

8.5

9.5

9.5

11

12

Slot number

1

2

2

2

3

3

M1

Ref.

3.4

4.8

5.2

5.4

6.7

7.3

M2

Ref.

3.3

4.8

5.2

5.6

6.6

7.2

α

0,+2°

90°

90°

90°

90°

90°

90°

dp

2.3

2.8

3.6

4.1

4.8

5.8

Drilling range (plate thickness)

0.7~1.9

0.7~2.25

1.75~3

1.75~4.4

1.75~5.25

2~6

Lg (Min.)

-

-

-

-

-

-

 

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