Lucas indicators

Hello. Can anyone tell me what size the silver Lucas indicator lens mounting screws are, and are there any equivalent ones out there.
I have been looking around ebay and find the Genuine Lucas screws are very expensive.
I live in the UK and would appreciate any help with this.

Thanks Neil.

No.6 x 1.1/8" Pozidriv panhead self-tapping.

(You will probably have to buy No.6 x 1.1/4").

RGM used to do them in stainless, may still do but you can get them elsewhere

http://www.gwr-fasteners.co.uk/no-6-pozidriv-pan-head-self-tapping-screws---a2-stainless-20290-p.asp