Ok. I saw a GREAT photo of an OTS floorboard set with the screws laid where they go. I want this for my DHC, but I have not been able to find one, so I thought I would make one. I do not, however have any idea whats what. Oddly, everything on my car was basically left alone EXCEPT the floor screws lol.
I found in my car as I dismantled it a few different styles:
round head, pointy tip (small length and long length)
Round head, float tip (both sizes)
Flat countersunk tip with:
pointy tip (only seem to have one length on this one- long)
flat tip
three sizes- small medium and long.
I need to understand:
where each of these go
how many of each
As soon as I have gathered this information, and once I have acquired the missing bolts, I will lay out the floorboards and take a nice clear picture so we will have a definitive reference.
If anyone is holding, and wants to pass them to me for science, I will be forever grateful.
BD1493/3 is a round head, (12) used on the boot (trunk) floor boards with the BD1711 rectangular pinch clips (16). The other 4 were FS404/6H round heads 3/4" long.
FS404/6H is a round head, not flat.
FS504/4H is 1/2" long and secures the lower seat frame to the seat rail runners.
FS504/5H is 5/8" long and secures the tapped bar on the underside of the floor to the floor panel.
FS504/8H is 1" long and secures the seat rail runner through the 3/8" packing and floor panel to the tapped bar underneath.
My guess on the Jaguar’s nomenclature for standard hardware is that FS means Fine Screw, or British Standard Fine BSF. The 3 numbers after FS were assigned to mean various types of screw. The last of the 3 is the diameter in 1/16" increments, i.e. 404 is a round head 4/16" or 1/4" diameter, and 504 is a 4/16" or 1/4" flat head. The number after the slash / is the length in 1/8" increments. The suffix letter is either a strength designation or some other characteristic.
BD means Body. BD numbers were assigned to screws with some special characteristic such as pointed end. 1493 is all 1/4" round heads and 1494 is all 1/4" flat heads. The number after the slash / was just a series number that increased with the length.
Flat head and Countersunk head mean the same thing, just two commonly used names, and the length is measured INCLUDING the head.