Countersunk socket screws, M2–M8 (ISO 10642 / DIN 7991) — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/countersunk-screws-metric/  (CC BY 4.0)
Basis: ISO 10642 / DIN 7991 (actual head diameter, 90° countersink)
Catalog version: 2026-10-20

Sizes: see table below
- Head sits flush in a 90° countersink. Countersink diameter = head diameter + 0.3 mm; depth = head height. In a print, add 0.2 mm to the diameter.
- Head height is about 0.55 × thread. Minimum material under the head on a printed part: 1.5 mm or it pulls through.

thread  head_dia_mm  head_height_mm  hex_key_mm  csk_dia_in_print_mm
M2  4.4  1.2  1.3  4.9
M2.5  5.5  1.5  1.5  6.0
M3  6.0  1.7  2.0  6.5
M4  8.0  2.3  2.5  8.5
M5  10.0  2.8  3.0  10.5
M6  12.0  3.3  4.0  12.5
M8  16.0  4.4  5.0  16.5

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- McMaster-Carr: Socket head screws (free STEP/IGES/STL per part, for your own design use; no redistribution) — STEP, IGES, STL, PDF — McMaster-Carr site terms: personal design use, no redistribution [verify license at link] — https://www.mcmaster.com/products/socket-head-screws/
- Wikipedia: Screw — web — CC BY-SA 4.0 (text) — https://en.wikipedia.org/wiki/Screw

Free files (CC BY 4.0, Xem Studio; STEP + STL, 35 parts): https://xemstudio.com/files/hardware/countersunk-screws-metric/index.json
API: https://xemstudio.com/api/geometry?object=countersunk-screws-metric