Sorry if this is the wrong place to post but I have this screw (see picture) for a scope of mine and need another, but I don't know what it is to find it! Diameter measures in at just under 8mm, maybe 7.5mm. It's machines and featured a rounded pin head, although the pin head isn't so important as the main body of the screw. Total length is 3.5cm but I don't mind a bit longer. If anyone can point me where to find one that's be great! It's a clockwise thread btw. Cheers
Dog point Grub screw or Set Screw known by a few names. http://www.accuscrews.co.uk/40-dog-point-set-screws http://www.gwr-fasteners.co.uk/socket-dog-point-grub-screws---high-tensile-149-506-c.asp