Bostitch N66C Coil Siding Nailer Review
Verdict: the Bostitch N66C is the best all-around siding nailer for most buyers — light, affordable, and versatile enough to handle siding, fencing, and decking with one tool. It's the siding-gun equivalent of the RN46 roofing nailer: nothing flashy, just dependable.
| Type | Pneumatic coil siding nailer (15°) |
| Nail range | 1¼″ to 2½″ coil siding nails |
| Capacity | ~200–300 nails per coil |
| Weight | ~5 lb |
| Depth adjust | Tool-free |
| Street price | ~$220 |
Feel and versatility
At around 5 pounds it's easy to run along a wall all day, and the wide 1¼″–2½″ nail range means the same gun does lap siding, fence boards, and deck work. For a lot of exterior remodelers, the N66C is the only coil siding gun they need.
Depth control — why it matters here
Siding lives or dies on depth. The N66C's tool-free depth dial lets you set nails flush on wood or fiber cement, or leave vinyl slightly loose so panels can move (see siding a vinyl wall). Set it on a scrap piece first and it's easy to keep consistent.
On Hardie board
It handles fiber cement well if you drop the pressure so it seats flush without crushing the board — fiber cement is brittle. Load corrosion-resistant nails and test first; full method in our how to nail Hardie board guide.
Pros
- Light and easy to handle
- Great value (~$220)
- One gun for siding, fencing, decking
- Tool-free depth control
- Common, cheap coil nails
Cons
- Needs a compressor and hose
- Dial the depth down for brittle Hardie
Who should buy the Bostitch N66C?
Remodelers, DIYers re-siding a house, and anyone who wants one reliable coil siding gun that also does fencing and decking. If you side daily and want maximum longevity, the Metabo HPT NV65AH2 has the durability edge — but for value and versatility, the N66C is the easy pick. Compare the field in our best siding nailer roundup.
Frequently asked questions
Is the Bostitch N66C good for Hardie board?
Yes, with corrosion-resistant nails and the depth set low so it seats flush without overdriving. Always test on scrap first.
What nails does the N66C use?
15° wire-coil siding nails, 1¼″–2½″. Use galvanized or stainless for exterior siding.
N66C or N66C-1?
Same tool; the N66C-1 is the current revision. Buy whichever is the better price.