Self-drilling screws DIN 7504: hexagon washer head (type K) and pan / countersunk heads (N, P), ST2.2–ST6.3: head diameter, height, drill-point diameter, drilling depth — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/self-drilling-screws-din-7504-heads/  (sheet CC BY 4.0)
Basis: fasten.it's DIN 7504 tables (09/1995, now cancelled): types K, N and P with the page's own column letters; numbers only
Catalog version: 2026-10-20

Sizes: see table below
- Millimetres. DIN 7504 is the (cancelled) standard for self-drilling tapping screws; fasten.it still prints it. Sizes ST2.2 to ST6.3. The page does not define its column letters, so none is interpreted beyond the names the page gives. For type K (hexagon washer head) the columns are P (pitch), h min, k (max / min), dc (min – max), s (min – max) and dp max; read from the shape of the head, dc is the washer diameter and s the hexagon width across flats, but the page does not say so. Types N and P print k and dk (min – max) and dp max; type R is printed identically to P; type L (hex head with slot) was read too and is not tabulated.
- 'Drilling depth, from – to' is printed as a row of seven value pairs without clear column alignment; the pairs were matched to ST2.9, 3.5, 3.9, 4.2, 4.8, 5.5, 6.3 in the order printed, so treat that column as read in order, not as a verified table. The page's heading for the block is 'Drilling depth (sheet, plate, thickness)' with a drill-point figure; the numbers are not interpreted further. The standard's minimum grip length (lg) table is printed without headers and is not used.
- Compare with the drilling ranges makers print for inch Tek points on tek-self-drilling-screw-drill-points: the two sets are not the same measure and are not converted.
- No file: head chamfers, washer face, drill-flute and thread geometry are not published as numbers on the page; a drawing from k, dc and s alone would be an invented shape.

head type  thread  P  k (max / min)  dc or dk (min – max)  s (min – max; reads as width across flats)  h min  dp max  drilling depth from – to (mm, read in order)
Type K (hexagon washer head)  ST2.9  1.1  k 2.8 / 2.5  dc 5.8 – 6.3  s 3.82 – 4  h min 0.4  dp max 2.3  0.7 – 1.9
Type K (hexagon washer head)  ST3.5  1.3  k 3.4 / 3  dc 7.6 – 8.3  s 5.32 – 5.5  h min 0.6  dp max 2.8  0.7 – 2.25
Type K (hexagon washer head)  ST3.9  1.3  k 3.4 / 3  dc 7.6 – 8.3  s 5.32 – 5.5  h min 0.6  dp max 3.1  0.7 – 2.4
Type K (hexagon washer head)  ST4.2  1.4  k 4.1 / 3.6  dc 8.1 – 8.8  s 6.78 – 7  h min 0.8  dp max 3.6  1.75 – 3
Type K (hexagon washer head)  ST4.8  1.6  k 4.3 / 3.8  dc 9.8 – 10.5  s 7.78 – 8  h min 0.9  dp max 4.1  1.75 – 4.4
Type K (hexagon washer head)  ST5.5  1.8  k 5.4 / 4.8  dc 10 – 11  s 7.78 – 8  h min 1  dp max 4.8  1.75 – 5.25
Type K (hexagon washer head)  ST6.3  1.8  k 5.9 / 5.3  dc 12.2 – 13.5  s 9.78 – 10  h min 1  dp max 5.8  2 – 6
Type N  ST2.2  0.8  k 1.6 / 1.4  dk 3.7 – 4  —  —  dp max 2.3  —
Type N  ST2.9  1.1  k 2.4 / 2.15  dk 5.3 – 5.6  —  —  dp max 2.8  0.7 – 1.9
Type N  ST3.5  1.3  k 2.6 / 2.35  dk 6.64 – 7  —  —  dp max 3.1  0.7 – 2.25
Type N  ST4.2  1.4  k 3.1 / 2.8  dk 7.64 – 8  —  —  dp max 3.6  1.75 – 3
Type N  ST4.8  1.6  k 3.7 / 3.4  dk 9.14 – 9.5  —  —  dp max 4.1  1.75 – 4.4
Type N  ST5.5  1.8  k 4 / 3.7  dk 10.57 – 11  —  —  dp max 4.8  1.75 – 5.25
Type N  ST6.3  1.8  k 4.6 / 4.3  dk 11.57 – 12  —  —  dp max 5.8  2 – 6
Type P (also type R, identical table)  ST2.2  0.8  k max 1.1  dk 3.5 – 3.8  —  —  dp max 2.3  —
Type P (also type R, identical table)  ST2.9  1.1  k max 1.7  dk 5.2 – 5.5  —  —  dp max 2.8  0.7 – 1.9
Type P (also type R, identical table)  ST3.5  1.3  k max 2.35  dk 6.9 – 7.3  —  —  dp max 3.1  0.7 – 2.25
Type P (also type R, identical table)  ST4.2  1.4  k max 2.6  dk 8 – 8.4  —  —  dp max 3.6  1.75 – 3
Type P (also type R, identical table)  ST4.8  1.6  k max 2.8  dk 8.9 – 9.3  —  —  dp max 4.1  1.75 – 4.4
Type P (also type R, identical table)  ST5.5  1.8  k max 3  dk 9.9 – 10.3  —  —  dp max 4.8  1.75 – 5.25
Type P (also type R, identical table)  ST6.3  1.8  k max 3.15  dk 10.9 – 11.3  —  —  dp max 5.8  2 – 6

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- fasten.it: DIN 7504 self-drilling tapping screws, 09/1995 (cancelled): types K (hexagon washer head), L, N, P, R; ST2.2 to ST6.3: P, h, k, dc, s, dk, dp and drilling depth — web — Reference page; numbers only. The page does not define the column letters — https://fasten.it/en/norms/norm/din_7504

No true-size file yet: the published figures do not fix the whole shape; a measured scan is planned.
API: https://xemstudio.com/api/geometry?object=self-drilling-screws-din-7504-heads