M3.5 x 50mm. Machine screws suitable for electrical installations.
MK K14181 BBR Edge Euro Modular Data Frontplate 1 Gang 25 x 50mm Brushed Brass
Electrical Screw Brass 3.5mm x 50mm Light Switch Screw Plug Socket Screws M 3.5
Dencon Brass Switch/Socket Plate Screws 3.5 x 50mm (Pack of 10)
10 x LARGE 50mm Brass Picture Wall Bracket Flat Mirror Photo Frame Fixing Mount
MK Albany Plus 1G Euro Data Frontplate Satin Brass K182 SAB 50 x 50mm
