Sir Peter
Post 554.
I cannot disagree with the poster's information, but the conflict intrigues me.
As for the bolt and threads, again there is an apparent conflict. Until now everyone's been talking about 1.5 threads, yet an instruction is now issued saying there should be no thread showing. Big difference and I just wondered if this was revealed to the SI or coroner. You say "unless otherwise stated", but should it not be established when what was stated? And why it has changed?