Kyosho 1-S33008H M3x8mm Hex Flat Head Screw 10pcs

A pack of ten M3 x 8mm flat head screws with a hex socket drive, from Kyosho's universal hardware range.

A flat head, also called countersunk, sits flush with the surface rather than standing proud. That is functional rather than cosmetic. On a chassis plate it means nothing catches on the ground or on another car, and on suspension parts it lets components sit directly against each other without a screw head holding them apart. It also means the screw needs a countersunk hole, so it is not interchangeable with a button or cap head in the same position.

The hex socket drive lets you apply real torque without rounding the head, which a cross-head fastener does quickly once it has been in and out a few times.

At 8mm this is one of the most commonly used lengths on a chassis, which makes it worth keeping in quantity. Screws are consumables on a car rebuilt regularly: heads round, threads strip, and thread-lock residue builds up until a fastener will not torque properly.

This supersedes the older Kyosho number 1377, and Kyosho lists it across 45 kits, the widest fitment in their screw range.