Phoenix Contact PTSM 0.5/ 2-2.5-V THR R44 Series PCB Terminal Block, 2-Contact, 2.5mm Pitch, Through Hole Mount, 1-Row,

This range of 2.5 mm pitch Through Hole Headers are from the Phoenix Contact PTSM Series and mate with the same headers used with the Terminal Blocks, see stock number 712-4497 typical, for Board to Board applications.
Available in Black or White.
The drill hole diameter and pin dimensions of the 2.5 mm pitch Through Hole Header are 1 mm and 0.6x0.4 mm or 0.8x0.3 respectively.
Inflammability rating is UL 94 V-0 for the PTSM 2.5 mm pitch Through Hole Header.

Phoenix Contact COMBICON 2.5mm PCB Terminal Blocks