...Well now, there is a solution! The Caterham 620R seat fastener pack (part number 3FV179A). Nigel Pugh is building a Superlight Twenty and sent me a picture of these new seat fasteners that have a countersunk washer and bolt - I was dead jealous, so ordered a set immediately!
They arrived yesterday morning however, the 'new' seat runners are not available as a spare part (yet) or Caterham didn't have them as a spare part in stock (I can't remember)... But... the good news is that the new seat runners (part number 3FV189A) have captive nuts, which means no more fiddling and cursing when trying to get that blasted drivers seat back in - I can't wait for those to come in stock!
Here's the pack of fasteners, and you can see the countersunk anodised washer and bolt - they look very nice, and much more 'finished' that the standard bolts sticking out the bottom of the floor, that's for sure.
|Caterham 620R seat fitting pack with countersunk washers and bolts! Part number 3FV179A
|New 620R countersunk seat fittings in place (the bulge in front is a rubber grommet - see above)