DCD800 / DCD805: the size and mode tradeoff
Two bars compare the listed head lengths on the same zero-based scale: DCD800 6.37 inches and DCD805 7 inches, a 0.63-inch difference. Motion symbols show rotation on both and additional axial hammering only on DCD805.
A shorter head buys clearance
DCD800: 6.37 inches (about 162 mm). DCD805: 7 inches (about 178 mm). Both bars use one scale and zero baseline. Add your bit, fastener, battery and hand clearance before deciding whether either tool fits.
Hammer action is an extra mode, not a universal upgrade
1: DCD800 rotates for drilling and driving. 2: DCD805 also offers axial hammer action for the masonry applications covered by its manual. Ordinary wood drilling and screwdriving do not use that extra action.
Allow space for the whole working setup
1 is the listed head; 2 is the protruding bit; 3 is the remaining working space before an obstruction. This layout is schematic, not to scale. Head length alone cannot establish whether a cabinet or corner is accessible.
The bars show manufacturer-listed head length, not complete tool-and-bit clearance. The approximately 16 mm difference is calculated from 0.63 inch. Motion symbols are qualitative; they do not compare drilling speed or force.
What do you gain with the DCD805?
The two differences worth starting with are head length and hammer mode. The DCD800 is about 16 mm shorter; the DCD805 adds hammer drilling. Either can assemble furniture and drill wood or metal. The shorter DCD800 is appealing inside cabinets, while the DCD805 makes more sense if the same tool also needs to drill a few suitable small masonry holes.
A higher model number is not a reason to buy. Regular concrete work, large holes or jobs calling for SDS bits need a tool chosen for that material and hole size. Hammer mode alone does not make the DCD805 a replacement for every dedicated masonry tool.
The specifications side by side
This table compares US DCD800B and DCD805B versions, with drilling capacities for the North American Type 1, 05/22 edition. Check the version sold to you; other markets or revisions may differ. Equal no-load speeds do not establish equal performance under load, runtime or service life.
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| Comparison | DCD800 | DCD805 | Why it matters |
|---|---|---|---|
| Operating modes | Screwdriving and rotary drilling | Screwdriving, rotary drilling and hammer drilling | A real need for masonry hammer drilling is the main dividing line |
| Screwdriving clutch | Positions 1–15 | Positions 1–15 | Both allow low-setting trials; the numbers are not torque values in N·m |
| Two speed ranges | 0–650 / 0–2,000 rpm | 0–650 / 0–2,000 rpm | Neither has a listed speed advantage; material, bit and load affect progress |
| Listed head length | 6.37 in, approximately 161.8 mm | 7 in, 177.8 mm | The DCD800 is about 16 mm shorter, relevant inside cabinets |
| Chuck | 1/2 in (13 mm) metal ratcheting keyless chuck | Same | Chuck size is not the maximum hole diameter in every material |
| Worklight | Three adjustable positions and three modes; up to 70 lm; 20-minute spotlight shutoff | Same | Lighting is not a DCD805-only benefit |
| Maximum recommended wood diameters | Auger/spade 38 mm; twist 25 mm; self-feed 65 mm; hole saw 76 mm | Same | No listed wood-capacity advantage; read the limit for the particular bit type |
| Maximum recommended metal diameters | Twist 13 mm; hole saw 38 mm | Same | Adding hammer mode does not increase these recommended capacities |
| Maximum recommended carbide masonry diameter | A dash in the table; no recommended value provided | 1/4 in (6.4 mm) | Use this North American manual’s limit, not another region’s figure |
| B-version contents compared here | Tool and belt hook; battery and charger excluded | Same | Include the battery and charger needed to work when comparing cost |
| Battery platform | DEWALT 20V MAX* | DEWALT 20V MAX* | Check compatibility with existing batteries and chargers; 20V is maximum initial voltage, 18V nominal |
Furniture and woodwork: a shorter head can help
For hinges, cabinet assembly and wood pilot holes, the priorities are the correct bit, a controlled start and room to work. Both tools offer 15 screwdriving clutch positions. The DCD805 does not need hammer mode for these tasks, and having that mode does not by itself prevent damaged screw heads.
Their basic controls work alike:
- For screwdriving, select a numbered clutch position. Begin low, try a scrap piece or inconspicuous area, then increase only as needed to seat the fastener. No position is a universal installation torque.
- For rotary drilling, select the drill symbol. The manual identifies speed 1 as the high-torque range and speed 2 as the high-speed range. Choose for the bit and material, and let the tool stop completely before shifting.
- Do not assume the screwdriving clutch protects you in drilling mode. The manual says the clutch does not disengage in drilling or hammer-drilling positions; an overload can stall the bit and produce a sudden twist. Clamp the work. If it stalls, release the trigger immediately and investigate rather than repeatedly pulsing the trigger to force it free.
A DCD805 kit may still be the better purchase if it includes the batteries and charger you need. Weigh the whole package against the extra head length, rather than paying for a mode you will not use or dismissing a useful kit over 16 mm.
Tight spaces and lighting: allow for the bit as well
The listed head-length difference is 0.63 in, approximately 16 mm. That can matter between framing members or inside a cabinet, but fitting the head into a space does not establish that the installed bit can approach the work squarely.
Before buying, measure from the drilling surface to the opposing obstruction. Add the length of the intended bit that will project beyond the tightened chuck, then allow room for alignment and feed. Check battery clearance and proper hand placement separately. Where space is generous, the 16 mm difference need not outweigh package contents, batteries and actual jobs.
The listed lighting features are the same. The manual specifies about 20 seconds of light after trigger release in the ordinary On setting, or about 20 minutes in spotlight mode. An adjustable light is therefore not an exclusive DCD805 upgrade. Before using either tool as a temporary spotlight, switch it off and remove the battery before removing chuck accessories. Refit the battery and place the tool on a stable surface, rather than leaving a bit pointing at people passing by.
Occasional wall drilling: specify the hole first
The DCD805 adds the option to hammer drill with the same tool. Before buying for “occasional wall drilling,” turn that phrase into a specific job: substrate, hole diameter, depth, quantity and fixing. “Home use” or “a wall” is not enough to select the equipment.
For the North American Type 1 version compared here, the DCD805 maximum recommended carbide masonry diameter is 6.4 mm; the DCD800 has no corresponding recommendation. A few 5 mm masonry holes could suit the DCD805 once the substrate, fixing requirements and percussion-rated bit are confirmed. An 8 mm fixing hole is beyond this version’s recommendation. A 13 mm chuck does not change that limit.
Distinguish the surface finish from the substrate, too. Tile, stone facing, hollow masonry and other wall constructions cannot all inherit an unverified hammer setting. Follow the relevant bit and fixing instructions for whether percussion is allowed, hole depth and cleaning. Check for concealed wiring and pipes before drilling, and provide eye protection, hearing protection for hammer drilling and dust controls appropriate to the material.
Before buying, price the complete setup
- Write down your three most common tasks, with material, diameter, depth and hole count. If none needs hammer mode, imagined backup use is not by itself a reason to choose the DCD805.
- Confirm the sales SKU and region. This article compares US DCD800B and DCD805B versions; do not import another market’s capacities, charger voltage or kit contents.
- Compare ready-to-work cost: tool, compatible battery, matching charger and required bits. With suitable batteries already owned, start with the bare-tool option; otherwise compare the actual kit inventory, not just a battery in a product photo.
- Check working clearance. Include the fitted bit’s protruding length along the drilling axis and check the battery and grip positions, rather than comparing one catalog dimension alone.
- Read the marketing comparison’s baseline. The listings’ “up to 40% more UWO” claims compare against DCD791B and DCD796B respectively, under named battery conditions. They do not say the DCD805 is 40% more powerful than the DCD800. UWO is not a torque value in N·m.
Models referenced