You requested threadcount details from The Scottish Register of Tartans website for the Burberry Grey (Original) tartan. The details are given below.

Threadcount:
B4DN80K20W28K20

Pallet:
K=101010BLACK;W=E0E0E0WHITE;DN=7C7C7CDARK GREY;B=2C2C80BLUE;

Threadcount given over a half sett with full count at the pivots.