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Hitachi NR90AC3 Round Head 2-3/8-Inch to 3-1/2-Inch Framing Nailer
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Hitachi NR90AC3 Round Head 2-3/8-Inch to 3-1/2-Inch Framing Nailer Reviews
I've had this gun for a good few years but about to swap it for the nr83a2. 8's weren't a problem to start off with but now jam regularly and drive me mad hence the swap. Its cheaper lighter and will shoot into anything your likely to come across. Unless you have a pacific need to shoot bigger nails buy the nr83a2.
This nailer would not feed 16d nails reliably so had to return it. I called Hitachi and they told me the feeder on this unit is larger to accomodate full size 3 1/2 inch nails strips. I wish this information had been in the product details. Since I am using 3 1/4 inch 16d and 8d most of the time, they recommended I buy the NR83AC nailer instead.
The NR83 shoots 8d's better but it doesn't have the punch of the NR90, nothing does. What happens is the nail track is too big for the 8d's and eventually they ride up on each other and don't feed properly after you have shot a couple boxes of them. If you only feed it one rack of 8d nails at a time (it holds 2) then the jamming is not so bad. I am convinced that there is not a better gun made that can shoot a big nail through the tuffest wood. I have bought 2 of these guns in the last 3 years to replace senco's and they are simply the best.EXCEPT They jam when using 8d's (2-3/8" nails). If you are an occasional or light duty user or a hobiest get the NR83 but get a Hitachi. If you plan on doing some heavy duty framing get the NR90. This is a common problem with most framing guns because of the different diameter nails they shoot.
6d's are not code here in CA anyway. Change out the trigger and you can not double fire as was said. 6d(2") nails are not for this gun. and never had a jam. The single fire AC2 issue, you need to change out the trigger, the included one is a NOT a single fire(sequential) and will easily double fire, it is a contact fire(bump) type. This is an excellent gun ,drives into anything wood,but you have to use good quality nails and be aware of the trigger b/c it has a lot of power. Cheap off brand nails or the wrong angle=jams. I own a NR90AC2,same gun but does not have a lever select on the trigger:.
On the 8d nail issue,in that size, I shoot ORCO brand,made in USA, in the gun, 2 3/8" ring shank Egalv. I never like bump fire, a safety hazard,waste of nails,inconsistent depths. AC3 has a lever to change it, AC2 you have to change out the whole trigger assembly. I always shoot ringshank into sheet goods b/c of the better grip.
The nails either jam or the slide slips by the nails. The 8's are a nightmare. The bigger nails, it shoots fine with not much kick back. Not just a few times, but every time. If you want it for nailing the shear walls with 8d's. Doesn't jam on them. We Purchased the NR90HitachiAC3 because we liked the Hitachi83 that we had for years, but didn't have an adjustment for the nail depth.
They advertise that it shoots nails from 8's to 16's. forget it, it is a waste of time and money. If you are buying this gun for shooting 10's or 16's then it is a fine gun. That is the main reason that we bought the gun for the 8's as we wanted to be able to adjust the depth while doing the sheathing for all the required engineering.
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