I'm likely to be refitting my seats this weekend (at long last). I want to replace the nuts bolts and washers whilst I'm there. The old ones are not in awful condition but I might as well, eh?

Question is: should I use BZP or Stainless A2 nuts and bolts? Why?

Neil
1988 Morgan 4/4 4 Seater, black
1996 LR Defender 110, white
2009 Honda Deauville, black