DIN EN ISO 15481 Standard Dimensions for Self-drilling screws, cross recessed pan head with tapping thread
Technical History and International Equivalents of DIN EN ISO 15481
Cross recessed pan head drilling screws with tapping screws thread
This standard (DIN EN ISO15481 and equivalents) specifies the characteristics of cross recessed pan head drilling screws with tapping screws thread from ST2,9 to ST6,3 included.
The self drilling screws are mainly used for fastening sheet metals without a previous hole and are the screws themselves which bore into the sheets and subsequently fasten both plates.
Dimensional Drawing and Technical Diagrams
Key Dimensions and Technical Parameters
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Dimensions in mm - source DIN EN ISO 15481 |
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| Publication date: 02/2000 Supersedes DIN 7504 M : 09-1995 | ||||||||||
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d thread size |
P
|
k min
|
k max |
dk min
|
dk max | r ~ | recess nr. |
Type H m ref.
|
Type Z m ref. | drilling range |
| ST2.9 | 1.1 | 2.15 | 2.4 | 5.3 | 5.6 | 5 | 1 | 3 | 3 | 0.7÷1.9 |
| ST3.5 | 1.3 | 2.35 | 2.6 | 6.64 | 7 | 6 | 2 | 3.9 | 4 | 0.7÷2.25 |
| ST4.2 | 1.4 | 2.8 | 3.1 | 7.64 | 8 | 6.5 | 2 | 4.4 | 4.4 | 1.75÷3 |
| ST4.8 | 1.6 | 3.4 | 3.7 | 9.14 | 9.5 | 8 | 2 | 4.9 | 4.8 | 1.75÷4.4 |
| ST5.5 | 1.8 | 3.7 | 4 | 10.57 | 11 | 9 | 3 | 6.4 | 6.2 | 1.75÷5.25 |
| ST6.3 | 1.8 | 4.3 | 4.6 | 11.57 | 12 | 10 | 3 | 6.9 | 6.8 | 2÷6 |