There is no DIN or ISO standard for the 4 prong wood thread insert (T-nut)
DIN 1624 is about cold-rolled steel, the often named ISO 6390 is about general tolerances on (cut) steel parts, which may apply to the T-nut, but they do not define the part as such.
hasecilu
commented
3 months ago
There is no DIN or ISO standard for the 4 prong wood thread insert (T-nut) DIN 1624 is about cold-rolled steel, the often named ISO 6390 is about general tolerances on (cut) steel parts, which may apply to the T-nut, but they do not define the part as such.