.100", 2.54mm.
Edit: Sorry, saw you ask for Digikey part.
I don't off-hand remember how many positions, but the Molex "KK 2695" (https://www.digikey.com/products/en?FV=ffec1477&stock=1) series will work, as will TE Connectivity's "CST-100 II"'s (https://www.digikey.com/products/en?FV=ffec53d1&stock=1) series.