LENGTHS: 19mm, 28mm, 35mm, 38mm, 50mm, 75mm. M3.5 ELECTRICAL SOCKET SWITCH SCREWS. M3.5 x 19mm. M3.5 Electrical Screws suitable for electrical installations. M3.5 x 75mm. Single Full Thread with Slotted, Raised Head Socket, Switch and Front Plate Screws.