DU-BRO 3mm x 4mm Socket Cap Screws

Secure your metric RC hardware with DU-BRO 3.0mm x 4mm Metric Socket Head Cap Screws. Each package contains four fasteners made from durable steel with a black oxide finish for corrosion resistance, giving you a dependable hold on metric-standard RC platforms.

The socket (Allen) head design allows for superior tool engagement, letting you apply consistent torque without stripping the fastener — a common problem with slotted or Phillips-head screws in tight RC assemblies. The 3.0mm thread diameter and 4mm length make these screws well suited for shorter mounting points such as servo trays, control horns, canopy latches, and other shallow-thread applications.

Compatible with modern metric-standard RC airplanes, cars, drones, and boats, these screws work equally well on glow, gas, and electric-powered models. Smooth, precise threading provides secure holding power that resists loosening from vibration during flight or operation.

Keep a package of these DU-BRO metric cap screws on hand for builds, repairs, and general maintenance. Their compact size and reliable strength make them a practical addition to any RC hobbyist's hardware inventory.