Hitachi 3-1/2-Inch Coil Framing Nailer Review NV90AG(S) | Pro Tool Reviews

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Professional tool reviews for professionals

Hitachi’s latest coil former nail gun has excellent performance, but there is still room for improvement in terms of functional components.

Hitachi is producing some impressive tools these days. You may have read our newer review of them 

, with

. I am fortunate to be able to review a few of them myself. Simultaneously

, I also tested its big brother Hitachi 3-1/2 inch coil nail gun. It is not surprising that there are some similarities in design, but will the big gun be hit like the small gun?

I am ready to find out.

Hitachi 3-1/2 inch coil frame nail gun is a very handsome gun. It weighs only 7.7 pounds, which is surprising. Of course, this size is necessary to generate force at 70-120 PSI to drive nails of 1-3/4 to 3-1/2 inches, 0.099 to 0.131 inches in diameter.

Like the Hitachi siding nail gun, the side-mounted magazine is slightly inclined for easy loading, and can accommodate 200-300 nails with wire finishing. However, unlike siding nails, the magazine is not transparent, so it is impossible to see how many nails are left on the coil.

On the NV65AH2, it has the same selective actuation switch that I like very much, allowing the user to switch between sequential (single) and continuous (sudden) actuation. Another echo of siding nails is the depth of the drive dial. In the past, if the nails were too deep or standing too high, I only needed to adjust the pressure on the compressor, but if I stood on the roof or ladder, it was not very convenient! Therefore, this is a useful feature that has become an industry standard.

Finally, the overmolded grip seems very comfortable at first glance. It includes some textured bumps to increase control. Of course, the real test is a magazine full of 300 heavy nails!

As I mentioned, the frame nails must be larger than their siding or roof siblings to generate the force required to drive the longer, thicker nails used to build the wooden bones of the building. This is the reason why the frame nail gun usually adopts the stick magazine design. The finished plastic tape is lighter than a coil full of nails. The weight compromise of typical rod frame nails is that they must be stopped more frequently for reloading.

However, because the Hitachi 3-1/2 inch coil frame nail gun is very lightweight, it can be combined with the coil design to provide users with the best of both worlds. It has the ability to drive large nails with the nail ability of siding or roof nails. Nevertheless, a full-loaded magazine will never become a lightweight thing anyway, so shake up the protein in the morning and enjoy the uninterrupted work flow.

Loading and adjusting the nail length of the magazine is easy. The side-loaded magazine has a tilt function, which makes it easy to place new coils. This is much easier than the clumsy design of old nail nails. The warning here is the same as for siding nails: compared to hard nail magazines, the magazine is fragile. I haven't rested yet, but it just didn't inspire confidence. Time will tell whether it is true or not.

I usually use collision ignition to actuate, and it has been no problem for the first few weeks. I did not jam or fire. As I mentioned, the depth of the driver dial on the gun is a time-saving and labor-saving feature-the adjuster dial is no longer needed to accommodate the depth. Perhaps most importantly, the gun’s balance is so strong that even the entire magazine looks lighter. The overmolded handle is comfortable to hold and the trigger is easy to pull.

Moving from the rocker to the coil former nail means you will have to give up dry fire stoppages. Comparable models from Bostitch, DeWalt and other companies also do not include them, so it is not a standard feature. Just realized that it doesn't exist.

I especially like to bite into the wood claw-shaped nose to make the toenails easy to use. The head is designed to be open at the bottom, Hitachi tells us, this will make it easier to clear the jam. Once I finally have my first one, I will let you know. On its own, at least it seems to make it easier to access jammed paper.

In order to improve, I would like to see a rotatable air inlet to accommodate the movement of the hose. I am very happy that Hitachi provided an air inlet connector, because some manufacturers do not provide an air inlet connector, but I do like my rotary connector. In a more important aspect, I want to add an after/belt hook. This will make high-altitude work easier when climbing.

Another problem is to know how many nails I have left. As we can see in the nails on the siding, adding a window to the magazine can handle the problem well. Finally, when those awkward positions are aimed at me, I prefer an adjustable exhaust port.

It weighs 7.7 pounds and boasts as many as 300 nails, so it takes the frame to another level. Of course, a fully loaded magazine will be heavier than a traditional stick design, but you will not stop to reload.

From a performance point of view, the Hitachi NV90AG(S) performed well in the first few weeks of my test. From an ergonomic point of view, the stapler can balance heavy magazine loads and provide a firm grip.

I think some features are missing in the next generation, including a hook, adjustable exhaust port and magazine window. Yes, if you want to provide an inlet connector, please provide a rotatable model. Although these are areas for improvement for me, in my opinion, whether alone or as a whole, they will not disrupt the transaction. Performance, ergonomics and capacity outperform them.

Hitachi 3-1/2 inch coil nail guns come with a 5-year warranty at a price of $279. That's not the cheapest frame stapler you want to buy, but it's also good for coil frame types. Considering Hitachi's reputation in the stapler category and the performance I have experienced, I can recommend this product to other professionals.

During the last 15 years of Kent Peardon's career as a carpenter, he bravely faced the ever-changing weather conditions in central Florida and challenged all forms of woodworking.

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I recently purchased a new Hitachi coil nail gun from RONA. In the past, I owned many Hitachi nails, including siding guns. It took me less than 3 weeks to use the new viewfinder gun, and the driving piston shot a nail from the gun due to the internal fracture. I tried to contact RONA to resolve this issue, but they have closed down. Then I called HITACHI directly, no one wanted to help me, they kept redirecting me to other people. I am so dissatisfied with Hitachi’s customer service that

As we all know, Hitachi Universal is a Japanese conglomerate that produces a variety of products, electronic products and tools, of which there are only two. They produced some of the best framed nails (

). It is a powerful tool in anyone's tool set. It is user-friendly enough for beginners and enthusiasts, and powerful enough for professionals.

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