ModMyMods M4 x 10mm Hex Countersink Screw Black MOD-0290

M4 x 10 mm countersink screws

These black-oxide alloy steel fasteners use a hexagonal drive for straightforward installation with a 2.5 mm key. The countersunk head sits flush once driven, making them suited to PC water-cooling builds and general hardware assembly where a low-profile finish is required.

7 mm thread engagement limit

Only 7 mm of the 10 mm length is threaded, so the screw cannot clamp thicker panels or bite deeper than that allowance. Over-length fasteners risk contacting radiator fins or internal components, so the short thread length defines the maximum material stack the screw can safely secure.

Single-length pack constraint

The kit supplies one fixed 10 mm length, so it covers only joints that match this exact reach. Builds needing longer engagement, different diameters or a variety of lengths will require separate fastener packs.