M8 nut trap (hex pocket for an ISO 4032 nut) — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/nut-trap-m8/  (sheet CC BY 4.0; files Xem Studio Design License, https://xemstudio.com/license/)
Basis: Xem Studio design — geometry computed in the generator from traditional proportions
Catalog version: 2026-10-20

Overall (mm): length 21.0, width 21.0, height 12.8
- Woodworking joint drawn for 3D printing: the parts lock together by shape, so a print can be joined without glue or screws. Drawn at true size with the parts line to line (zero gap) in their assembled position — add your printer's fit allowance to the mating faces (your AI or slicer can do this).
- A hex pocket the size of an ISO 4032 M8 nut (13 mm across flats, 6.8 mm thick) with the screw hole through: the standard way to put a metal thread in a print.
- Drawn at the nut's true size: add your printer's allowance to the pocket (often 0.2–0.4 mm on the flats) so the nut drops in.

dimension  value
stock  21 × 21 × 12.8 mm test block
parts  block, nut
hex pocket  13 mm across flats (nut size), 6.8 mm deep (nut height)
screw hole  Ø8 mm (nominal M8)
nut  ISO 4032 M8: 13 mm AF, 6.8 mm thick
assembles  drop the nut into the pocket, screw from below
holds  the nut from turning while the screw is driven

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- Xem Studio: Joinery design (geometry computed in the generator from traditional proportions) — web — Xem Studio design — https://xemstudio.com/

Free files (Xem Studio Design License, Xem Studio; STEP + STL, 3 parts): https://xemstudio.com/files/hardware/nut-trap-m8/index.json
API: https://xemstudio.com/api/geometry?object=nut-trap-m8