Measure the spacing between the holes, you might get lucky and a tek lok will line up to it. I have the hole pattern for them recorded somewhere, I will post the spacing if I find it.
Chicago screws will go through the open grommets. For little expense, you could make your own belt loop.
https://www.knifekits.com/vcom/chicago-screws-gun-metal-1875-500-pack-p-2688.html
https://www.knifekits.com/vcom/belt...model-hole-black-tactical-finish-p-13156.html
I thought I'd need through-screws on both sides of the sheath for balanced and steady carry.