Hi, thankyou to everyone who replied and sorry I'm late getting back to you. I did have a look myself on Andy's suggestion and I thought the same as Chasmengr. Being in the UK and used to metric I'd never heard of 10-32 but I did some googling and apparently the 10 is the diameter in imperial? I don't know if that would equate to 1/10th of an inch? The 32 is the bolts TPI, but I expect you guys knew both anyway. I found some on eBay UK and they're cheap http://www.ebay.co.uk/itm/291541908946?var=590599652604, I will buy a few which will equate to 2-3 dollars I would imagine, so not too bad.