Subfloor

[o1marc]

What holds the plywood subfloor down. I believe after looking under the bus to remove seats I see a million self tappers coming through the floor. Are these what secure the plywood down, and if so, what head do they have?

 

[jjhwick119]

What holds the plywood subfloor down. I believe after looking under the bus to remove seats I see a million self tappers coming through the floor. Are these what secure the plywood down, and if so, what head do they have?

Mine Had all the phillips going up the runway aisle, and torx screws securing the plywood, I believe T30 but not 100%. about 8 of those per panel i believe.

 

[PNW_Steve]

Mine had Phillips self tapping screws and a bunch of funky spiral fluted nails.