1972 Bronco threaded holes in rear floor

[Mikemairs]

Hi, I have 4 equally space, 7/16"-18 threaded holes, in the floor just behind the rear bench seat. There is nothing screwed in to them. Any idea what they are for?
Thanks in advance.
Found it, they are for the seat belts.

 

[Dude 713]

Hi, I have 4 equally space, 7/16"-18 threaded holes, in the floor just behind the rear bench seat. There is nothing screwed in to them. Any idea what they are for?
Thanks in advance.

Seat belts?

 

[thegreatjustino]

For mounting a factory bulkhead.

 

[hatleyjm]

how are they spaced? If you have two pretty close to the wheel wells and two in the middle, they are for seatbelts. See this thread: https://classicbroncos.com/forums/threads/rear-seat-belt-hole-locations-where.305863/

 

[Oldtimer]

. . . .7/16"-18 threaded holes, . . . .

They are more likely 7/16-20 threads

 

[SteveL]

For the parachute

 

[stout22]

seatbelts - 2 in the center and 2 on the outside edge of the rear seat.