Over the counter parts Home › Forums › Plan B › Over the counter parts Tagged: cil screw This topic has 1 reply, 2 voices, and was last updated 9 years, 9 months ago by dragonator. Viewing 2 posts - 1 through 2 (of 2 total) Author Posts November 30, 2014 at 6:48 pm #2024 fabbersParticipant Hi Yvo: Again with the banal questions. Even google didn’t help with this one. M4 cil screw 16mm What does “cil” mean? something standard, or a seal screw or a torx screw? December 1, 2014 at 8:18 pm #2026 dragonatorKeymaster The name is abbreviated for space, it is short for cylindrical. It is a metric screw with a round head and an Allen Key socket in it. If you look at the pictures of Plan B, you will see all of the round headed screws. Author Posts Viewing 2 posts - 1 through 2 (of 2 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In