Best Overall
BOSTITCH Coil Siding Nailer, 1-1/4-Inch to 2-1/2-Inch, 15 Degree (N66C)
- Tool Weight
- 4.08 lbs
- Nail Length Range
- 1-1/4–2-1/2 in.
- Collation Compatibility
- 15° Wire
Pros
- Drives nails cleanly into fiber cement and Hardie plank without constant misfires — 238 mentions, 92% positive
- Weighs just over 4 pounds, making overhead and ladder work far less fatiguing — 64 mentions, 95% positive
- Tool-free depth adjustment and straightforward coil loading keep setup quick between jobs — 79 mentions, 99% positive on ease of use
Cons
- Jams may occur with non-Bostitch nails or when the coil is nearly empty — 91 mentions, 42% negative
- Threaded air port can crack on some units, though proper hose support and lubrication reduce risk — 47 mentions, 32% negative
Fiber cement and Hardie plank siding demand a nailer that drives true without misfires. The Bostitch N66C delivers that consistency coil after coil, thanks to a tool-free depth adjustment that locks in flush sets on varied materials. A 360° exhaust and 4-pound body keep all-day siding work from becoming a shoulder workout, and the mid-range price undercuts heavier premium models without sacrificing fire rate.
This nailer fits serious DIYers and contractors who want a lightweight, dependable workhorse — not the absolute lightest or the fanciest. It accepts 1-1/4 to 2-1/2 inch coil nails for siding, fence pickets, and sheathing. The catch: jamming can occur with non-Bostitch nails or when the coil runs low. A small number of units have developed cracks at the threaded air port, but supporting the air hose and lubricating properly greatly reduces the risk. The depth-of-drive can drift if air pressure isn't retuned after switching material thickness — a minor adjustment that becomes second nature. Stick with Bostitch fasteners and a consistent pressure check, and this nailer will handle thousands of nails without complaint.
💡 💡 Tip: Use Bostitch-recommended nails, reload before the coil gets low, and support the air hose to keep jams and port stress to a minimum.
Bottom line: If you want a lightweight, time-tested siding nailer that handles fiber cement without constant misfires and you're willing to feed it Bostitch nails, this is the clear workhorse pick.
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