Best finish nailers

Gauge is wire thickness, and it runs backwards: a smaller number is a thicker nail. A 15-gauge nail is substantially thicker than an 18-gauge brad, carries a proper head rather than a pin, and will pull a slightly bowed piece of baseboard tight against a stud. An 18-gauge brad is thinner, headless in practice, and will hold light stock in place while glue cures without leaving a hole you have to think about.

That difference decides the tool. Door casing, window casing, baseboard, chair rail, stair skirts and anything structural-adjacent want 15 or 16 gauge, because the holding power is doing real work against material that is not perfectly straight. Shoe moulding, scribe, bead, panel moulding, cabinet face trim and small returns want 18 gauge, because the stock is thin and split-prone and the fastener is only holding position.

There is a middle option worth naming even though our roster does not carry one: 16 gauge is the compromise that a lot of trim carpenters settle on, with most of the holding power of 15 and a smaller hole. If you are furnishing a shop from scratch and can only own one trim nailer, 16 gauge is the defensible single choice. If you can own two, own a 15-gauge and an 18-gauge, which is the pairing every one of the tools below is designed around.

The angled magazine on the 15-gauge Bostitch is the other thing to understand. An angled nailer reaches into inside corners and up under a stair nosing where a straight magazine fouls on the adjacent surface. That is not a marketing feature; it is the reason angled 15-gauge tools exist, and our gauge comparison page goes through the trade in more detail.

Every figure here is the manufacturer's own, from its own product page or its own manual, linked in the sources block below. We have not tested these nailers and we publish no ratings, awards or measured results of our own. What we did is read five spec sheets against each other and against the compressor sizing our CFM chart supports.

The criteria, in order of weight for someone buying one trim nailer:

For a whole-house trim job - baseboard, casing, door jambs, chair rail - the 15-gauge Bostitch is the tool and the 18-gauge brad nailer is the second tool you will also want. Baseboard against a wavy wall needs a nail with a head and a shank that will not bend as it enters; casing against a jamb needs the same. Use the brad nailer for the returns, the scribe and the quarter round after the heavy work is done.

For cabinets and shop furniture, the 18-gauge tools are the whole answer and the 15-gauge is overkill that splits thin stock. Here the ranking is about handling, because you will be holding the tool inside a carcass at an angle. The Metabo HPT NT50AE2 at 2.2 pounds is the lightest and the DeWalt DWFP12231 at 2.65 pounds is close behind; the Bostitch BTFP12233 at 3.1 pounds is the heaviest 18-gauge tool here and you feel it overhead.

For the longest 18-gauge brad available, the Bostitch BTFP12233 takes 2-1/8 inch fasteners where everything else stops at 2 inches, and it publishes a 1.15 CFM figure at 60 nails a minute - the lowest air demand of any tool here. On a small compressor that combination is genuinely useful.

For a first nailer bought alongside a first compressor, the Makita AF506 is the one we would choose, for the unglamorous reason that it publishes the figure you need to size the machine: 1.5 SCFM at 90 PSI. You can check that against a compressor's published CFM before either box is opened, which is not true of most of this category.

Finish nailing is the easiest air job in a garage, and the published figures show why. A nailer draws per shot rather than continuously, so the question is never how much air the tool needs but how fast you fire. Bostitch's 1.8 CFM at 80 PSI for the 15-gauge tool is quoted at 60 fasteners a minute - one nail a second, sustained, which is a faster pace than anyone trims at for long.

That means a six-gallon pancake at 2.6 CFM at 90 PSI runs any tool on this page with margin, and will do a whole house of trim without you waiting on the pump. It also means the usual advice to buy a bigger compressor for trim work is wrong: the tank is a buffer and six gallons at 150 PSI is a deep one.

Where it gets tight is the one-gallon quiet compressor class, which publishes 0.7 CFM at 90 PSI. In bursts that is fine - the tank covers a dozen nails and refills while you measure the next piece. At a sustained pace it is not, and the symptom is nails sitting proud while the pump runs continuously. If you are working inside a finished house and want the quiet machine anyway, that trade is often worth making; just work in the rhythm the compressor allows.

Hose matters more than people expect on a long trim run. A quarter-inch hose is adequate for a brad nailer and nothing above it; for the 15-gauge tool at a working pace use 3/8-inch, and keep the run to 50 feet where you can. Our hose pages have the numbers.

Pneumatic finish nailers mar the work. Every tool here ships a no-mar tip and every one of them will still leave a ring if you lean on it at an angle, and on pre-finished trim that ring is a repair. Keep the tip square, keep the pressure at the lowest setting that sets the nail flush, and test on an offcut of the actual material every time the material changes.

They also dry-fire. All of these tools will cycle on an empty magazine, and a dry fire into finished trim drives the driver blade into the surface. Some tools in the wider market have dry-fire lockout and none of the five here publishes it, so the practical defense is to reload early rather than to rely on the tool.

Oil is a recurring argument. These are oil-lubricated pneumatic tools in the general case, and a drop of air tool oil in the inlet before each use is the maintenance routine - but on finish work that oil can blow onto the surface. The fix is a filter at the compressor and sparing oiling, not skipping the oil, and our air prep pages cover the hardware.

And the honest limit of this page: five tools, one of them 15 gauge and four of them 18 gauge, with no 16-gauge option. That gap is real and we are not going to fill it with a product we have not verified. If 16 gauge is what you want, our gauge comparison explains the trade and the buy buttons here will not help you.