YIPPPEEE, I found the answer to my screw problem. Yikes, am I at the right website??? Ok Viking dealers didn't know what I was talking about, this 1/4" foot did not snap on but had it's own ankle, but a trip to specialty hardware store found the correct screw it is DIN 7985 M3x10 panhead phillips, it is a little long but works great, instead of the $6.00 the online store I bought the foot from, the cost was $.02, ( I figured I could afford a spare) I am back in business. THANKS ALL. Rita