DEWALT 3/4 in. to 1-3/4 in. Coil Roofing Nailer-D51321 - The Home Depot
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Model # D51321

Internet # 100429262

3/4 in. to 1-3/4 in. Coil Roofing Nailer

DEWALT 3/4 in. to 1-3/4 in. Coil Roofing Nailer

This item has been discontinued.
The Home Depot no longer carries this specific product.

$249.00 / each


Model # D51321

Internet # 100429262

Store SO SKU # 1000895783

The DeWALT, D51321, Heavy-Duty 3/4 in. - 1-3/4 in. Coil Roofing Nailer is lightweight at only 4.9 Lbs. with a magnesium housing that provides enhanced maneuverability and aids in minimizing user fatigue. This unit provides a cycle rate that works as fast as you do and also delivers the power to consistently drive nails in the toughest of applications. The tool-free depth adjustment, convenient side-load canister design, pneumatic-bias feed piston, and the integrated jam-clearing nose door are just some of the features that make this unit first in its class.

  • Lightweight (4.9 lb) tool with a magnesium housing provides enhanced maneuverability and aids in minimizing user fatigue
  • Produces a cycle rate that works as fast as you do
  • Delivers the power to consistently drive nails in the toughest applications
  • Tool-free depth adjustment assists in locating the perfect depth setting for precise nail penetration
  • Convenient side-load canister design allows for quick and easy nail loading
  • Carbide inserts in contact trip foot protect against premature wear
  • Pneumatic-bias feed piston provides consistent nail feed as pressure fluctuates, minimizing skipping and jamming
  • Integrated jam clearing nose door eliminates down-time from bent fasteners caught in the nose piece
  • Piston catch design allow for a consistent drive in every shot
  • Double O-ring feed piston design provides protection against excessive feed piston wear

Info & Guides

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Maximum fastener size (in.) 
Minimum Fastener Size 
1-3/4 in 
Minimum fastener size (in.) 
Product Depth (in.) 
Product Height (in.) 
Product Width (in.) 
Air Tool Type 
Air Nailer 
Energy Type 
Fasteners included 
Loading type 
Maximum Fastener Size 
1-3/4 in 
Nail Gauge 
Nailgun Angle 
Tools Product Type 
Power Tool 


Rated 2.5 out of 5 by 2 reviewers.
Rated 4.0 out of 5.0 by A Good Nail Gun for the Price and for My Project I reroofed my house and needed a roofing nail gun, but because I only needed the gun for this job, I didn't want to spend a lot of money on the tool like I would if I roofed for a living. I found this DeWalt on sale at HD for $160, so I went with it knowing that I've always been happy with my DeWalt cordless drills and miter saws. I shingled 18 squares of comp shingles with no issues aside from normal, rare jambs. Jams were easily cleared using the side door, and even a particularly awkward jam was easy to clear with a tap of the jammed nail using another nail and then opening the side door. The gun had no issues shooting through 1/2" CDX and at times through both the 1/2" CDX and 1" skip sheathing underneath--so approx. 1-1/4" of wood in those areas. It is light, and I like the ergonomics/balance. The reveal gauge stayed in place after setting. There is plenty of depth adjustment. The anti-skid rubber nubs on the sides do a good job keeping the gun from sliding on paper, shingles, and flashing. The reason I rate it a "good" and not excellent is because the canister's plastic housing does not seem very well reinforced in its own molded design, so I can see this being a weak link especially down at the hinge for long-term abuse. There are metal wings on the side to protect the canister when the gun is set down, but the plastic housing still seems weak in relationship to the rest of the gun. Thicker walls or some ribbing would probably be better, or even an alloy canister. Overall, especially for the sale price, I think it's a good gun, and I recommend it. June 15, 2013
Rated 1.0 out of 5.0 by Broke Down I purchased this Roofing nailer thinking Dewalt would not let me down and it did. After nailing half my roof it started dry firing because the driver was not retracting itself to load another nail. I retured to HD and bought a Bostich January 28, 2013
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