The Best Brad Nails for Trim & Molding (2026)
By The DIYPicks Team · Updated July 2026
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Brad nails are the go-to for attaching interior trim, molding and lightweight cabinet parts because their thin 18-gauge shank leaves a hole you can fill with a dab of putty. This guide picks the brad nail that fits nearly any nailer and keeps a whole trim job under a few dollars in fasteners.
The default interior brad nail: an inexpensive 18-gauge electrogalvanized strip that fits nearly any brad nailer and leaves a fillable pinhole for trim, molding and cabinet face work.
- Trim
- Molding
- Cabinets
Pros
- Cheap consumable at roughly $15 per 1,000, so a full trim job costs a few dollars in fasteners
- 18-gauge leaves a pinhole that needs little or no filler, ideal on stained or delicate molding
- Straight 18ga strips fit almost every brad nailer (Ryobi, DeWalt, Metabo HPT, Milwaukee) with no adapter
Cons
- 18-gauge has low holding power, so it is for tacking trim, not structural or load-bearing work
- Electrogalvanized coating is for interior only, it will rust on exterior or treated lumber
- 2 in maximum length in this SKU cannot reliably bite through thick casing into a stud
Still deciding? Compare them
Frequently Asked Questions
- What length brad nail should I use for trim?
- For thin base shoe or quarter round, 5/8 to 1 in is plenty. For standard baseboard and casing, step up to 1-1/2 to 2 in so the nail passes through the trim and bites into the stud or drywall behind it.
- Will 18-gauge brad nails hold baseboard by themselves?
- For light trim, yes. For tall or warped baseboard that wants to spring off the wall, brads are marginal, use a 16-gauge finish nail or add construction adhesive so the fastener only has to hold the board while the glue sets.