Bolt size on Vacuum Retard

[King Fisher]

Hello,

My Chimaera's vacuum retard fell off at 140 on the autobahn. Luckily Nick fixed it with an old bolt he had lying around, however, he has no idea what size it is. M3 is too small, M4 too large. Is it imperial?

Cheers.

[nickb134]

knowing Lucas it's probably a BA bolt, either 0 or 2 BA from memory. I Think Maplin still stock BA bolts. hope this helps

[King Fisher]

nickb134 said:

knowing Lucas it's probably a BA bolt, either 0 or 2 BA from memory. I Think Maplin still stock BA bolts. hope this helps

Ok thank you. Was BA called anything else, as I can't find anything but UNF, UNC, BSF and BSW on websites?

Edited by King Fisher on Friday 22 June 10:35

[phillpot]

How many do you want... or several hundred listed on Ebay

If it's between 3 - 4mm it gonna maybe a 4ba

Edited by phillpot on Friday 22 June 18:16

[nickb134]

BA stands for British association or associated. Its a Whitworth threadform but finer. linky: http://www.britishfasteners.com/threads/

[King Fisher]

It's ok lads, Nick's been on the rob at college, and raided the engine stores. There's a scrap Rover V8 sat in there, minus a bolt now ;-)