|The MGA With An Attitude
Original FLOORBOARD SCREWS - FR-111A
For MGA, original floorboard screws are BMC# CPZ0416
Countersunk Pointed Zinc 1/4-28-UNF x 1
They are also Pozidrive slotted.
The pointed tip can be a concours issue, even though a socket head or Phillips slotted head and flat washer may be hidden under carpet.
The washer is BMC part number 64401 Counersunk Cup Washer (zinc plated).
This is similar to a finishing washer, except it has a wide flange around the outer edge to distribute the load over a wide area on the soft wood.
I used hex socket flat head screws with flat tips, just because that's what was conveniently available when I needed them, back in the late 70's when parts were harder to find. In place of the flat flange cup washers I used standard flat washers (3/8 size I think) and hit them with a coutersink tool to make the screw heads lie flush.