Does anyone know what the grub screw size is for simmer slot boxes… i’ve got a v4 flywave that needs some new grub screws… dont know what size they are. could even be imperial. I believe the following version they switched to slot box screws and dropped the grub screw. So i’m chasing the grub screw version.

buying 10 screws from simmer is $120… i **** you not...simmers postage is whack

i’m guessing m4x16mm is the size…

SurferKris said..
It is an UNC screw, I have bought a set (20 pieces, 12 US $ in total) of 10-24, 3/4" long in stainless steel ones from AliExpress, works fine.

Thx, that makes a lot of sense.. just compared to some fcs grub screws and they look the same thread and diameter.

The outer diameters would very similar but the thread-pitch of an M5 is finer (0.8mm) than on the 10-24 (with 24 threads over 25.4 mm).

The FCS screws are also 10-24, but in general shorter in length compared to the Simmer ones. They work well as a simple test for comparing/check the thread pitch though.