Guest zazothex Posted May 18, 2013 Share Posted May 18, 2013 I'm replacing my floorboards and need some info on some fasteners, which have rusted away to unidentifiable. Anyone know the length, diameter & thread pitch of: B pillar -> floor supports. The big aluminum ones with the pan head slotted tops Seat -> frame bolts. these also go through the floor & attach at a couple of brackets off the main rails. Hex head. Link to comment Share on other sites More sharing options...
John Murphy Posted May 18, 2013 Share Posted May 18, 2013 What car are you restoring...Zeffer or LC...hex head came after WW II...means postwar, right? Link to comment Share on other sites More sharing options...
Guest zazothex Posted May 19, 2013 Share Posted May 19, 2013 Sorry. I should know better. It's a 47 LCC. I did some digging (and grinding) and found this out: The seat -> frame bolts are 5/16-18s about 3/4" long hex heads The aluminum B pillar bracket -> frame are also 5/16-18 but are machine screws (slotted of course). Make sure the heads are tapered on the underside. Three of these are 1 1/2" long and two are 4 1/2" long, as they run through the frame rails themselves. Also, for those of you masochistis like myself who are removing the B Pillar support brackets to redo the floor sheet properly, there are three 1/4-24 x 2 3/4" machine screws holding the support into the B-pillar. These are tough to get out, as you need to cut the inward-facing sheet on the pillar out. I just finished mine up, should have pics soon.All the lengths I listed may be a tad long, as I usually buy long and trim. I hate getting home and finding the bolt are too short. Link to comment Share on other sites More sharing options...
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