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M4 Screws

M4 Screws

M4 is the metric thread used on a lot of European water cooling hardware, on radiator mounting on some ranges, and on bench frames. It is close enough to 6-32 to start in the wrong hole and strip it, so check the thread before you turn the driver.

Radiator hardware: DimasTech RadExt fan fix sets pairing M4 radiator screws with M2.5 x 25mm thumb screws, sized for 120/140, 240/280, 360/420 and 480/560, plus a four piece M4 radiator screw set in deep black and M4 female thumb nuts in Meteorite Silver.

ModMyMods hardware: M4 x 10mm hex flat head countersink screws in black, and a range of M4 lengths, so you can buy the length the stack actually needs instead of the closest one in a kit.

Alphacool: M4 x 6mm flat head Phillips, M4 x 10mm flat head socket cap for the Eiskoffer, and the screw kit for the Eisbecher DDC.

Also here: M4 flat washers in black carbon steel, and M4 x 35mm black screws for reaching through a rad, a shroud and a filter in one go.

Imperial hardware is in 6-32 screws.