Casing nails and finishing nails are similar and differ primarily in the shape of the heads. A casing nail is similar to a finishing nail but has a slightly thicker shaft and a cone-shaped head.

casing nails are used where the nail head must be hidden. They have small heads and smaller diameters than common nails.

A hot galvanized casing nail

Feature:
Designed with hot dipped galvanized or electro galvanized
Similar to a finish nail but slightly thicker
For nailing door and window trim
Deep countersunk head with diamond point
Used in board and trim applications
Nail head is easily countersunk below the surface of the wood
Hip Dipped Galvanized for exterior use