Name that bolt/nut/screw size

[Dale99]

I've been having problems finding fastener information while rebuilding my ride. I thought it would nice to have all this information in one thread. Since this is the blazer/jimmy section, lets try and get mainly info for them, but info that's the same for trucks is welcome.

So, what the bolt is for, size-thread pitch, type head. Qty needed may be helpful as well.

Double wall top
visor bolt, 5/16-18, 2.375 long with 1.375 shoulder, hex, qty 2
bed bolts, 5/16-18, .875 or 1.00 long, w/washer, hex, qty 10
top to bracket, 5/16-18, .625 long, w/lock washer, panhead phillips #3, qty 4
frame to bracket, 5/16-18, 1.00 long, w/small washer, hex, qty 2
rear plate, 5/16-18, 1.00 long, hex, qty 6

Single wall top
Bed bolts, 3/8-??, ?? long

Visor bolts, 5/16-18, 1.00 long, oval head with custom .50 dia head, #2 phillips (cant find these anywhere)
gasket to top of a-post, ??? qty 6
door sill plate screws, #8x1.00 panhead #2, qty 8
Pass Seat to floor, 5/16-??, 1.00 long, qty 6
Drivers seat to floor, 5/16-??,
Rear seat to floor front bkt, ??, ??, Qty 2
Rear seat to floor rear bkt, ??, ??, Qty 4??