Tilt latch p/n ID request

Hi,

I'm looking for the part number is for the left and right tilt latches for a vinyl replacement window that doesn't seem to have any etchings indicating the manufacturer. The only thing I could find is a sticker from out of business lumberyard indicating model # 1540 and a gold and black Namco sticker with the following specs: MANUFACTURER STIPULATES CONFORMANCE TO
CODE: KK
RATING: NFRC100/200
SERIES: 4800 DH Mech Frame
MST: 3050
NFRC KKI-1-007 98-M.

Your assistance and time is greatly appreciated!

Thanks,

Jenn