Finish nails are used for trim carpentry: installing crown molding, baseboards, door and window casings, paneling, and decorative woodwork. The small head is set below the wood surface and filled with putty for an invisible finish.

Finish nails (15 or 16 gauge) are slightly thicker and stronger than brad nails (18 gauge). Use finish nails for heavier trim like baseboards and crown molding. Use brad nails for delicate trim and thin moldings.

For standard 3/4 inch thick baseboards, use 6d (2 inch) or 8d (2-1/2 inch) finish nails to reach through the baseboard and into the wall stud. Angle the nail slightly for better holding power.

After driving the nail nearly flush, place a nail set (a pointed metal tool) on the nail head and strike it with a hammer. A single firm strike drives the head 1/16 to 1/8 inch below the surface, creating a small hole to fill with putty.

Yes. Finish nailers (15 or 16 gauge) drive finish nails from a magazine. They are faster than hand nailing and provide more consistent depth. Match the nail gauge to your specific finish nailer model.

No. Finish nails are non-structural fasteners designed only to hold trim pieces in place. They are not rated for load-bearing connections, which require common nails, structural screws, or engineered connectors.

For standard 3/4 inch thick crown molding, use 6d (2 inch) or 8d (2-1/2 inch) finish nails. Drive into wall studs and ceiling joists behind the molding, not just into drywall, for a secure hold.

15-gauge nails are slightly thicker with greater holding power. They use an angled magazine nailer. 16-gauge nails are more common and use a straight magazine nailer. Both are suitable for baseboard and molding installation.

Finish nails are typically uncoated and will rust if used outdoors. For exterior trim, use stainless steel or hot-dip galvanized finish nails specifically rated for outdoor use and compatible with the trim material.

Use the smallest nail that provides adequate holding power, pre-drill a pilot hole in fragile or very dry trim pieces, and avoid nailing within 1 inch of the end of a trim board where splitting is most likely.