Carriage bolts have a square base on the head that digs into the round edges of the pilot hole to hold it in place.
Trailer deck carriage bolts.
1 4 20 x 1 flat head trailer flooring 6 lobe drive blk ox 1 4 20 x 1 flat head trailer flooring 6 lobe.
Be sure to offset the bolt holes on each corner by three inches and the remaining two bolts on each side should be evenly spaced between the front and back of your.
If you need a drill bit for these the correct one is the torx head screwdriver bit tx430 1.
If you are drilling your own holes through the trailer frame i recommend using four carriage bolts for both the left and right side of the trailer and two bolts on each crossbeam.
Trailer deck screws 5 16 18 2 1 2 torx t40 fastener.
Lowboy flooring deck clip designed to secure flooring to the crossmembers on lowboy drop deck tag trailers other platform trailers.
Mount with 3 8 carriage bolt and nut both sold separately.
Self tapping screws for installing hardwood planks on flatbed trucks trailers.
3 16 10 24 carriage bolts.
Lowboy flooring deck clip 50491025 tal38dc.
I would go with the 2 1 2 long torx trailer floor and wall liner screw for acq treated wood tfx250acq.
Stainless steel socket screws.
Crawl under the trailer and thread a washer and a nut on the bottom of each bolt.
While bolts would certainly work they would be more labor intensive and a wood screw with a flush mounted head will be just as effective.