Milwaukee 2804-20vs2904-20

Two hammer drills, compared from their makers' published US specs. Specs checked 2026-10-18.

Milwaukee 2804-20

BARE TOOLMilwaukee M18

Max torque 1,200 in-lbsMax speed 2,000 RPMHammer rate 0-32,000 BPM

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Find 2804-20 prices on Amazon Find 2804-20 prices at Acme Tools Opens the retailer in a new tab; the current price is shown there. Marketplace sellers vary: check the seller and exact model.

Milwaukee 2904-20

BARE TOOLMilwaukee M18

Max torque 1,400 in-lbsMax speed Low 0-500 / High 0-2,100 RPMHammer rate High 0-33,000 BPM

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Find 2904-20 prices on Amazon Check the 2904-20 price at Acme Tools Opens the retailer in a new tab; the current price is shown there. Marketplace sellers vary: check the seller and exact model.

How to choose between them

Both run on Milwaukee M18 batteries, so your existing packs fit either; the differences above are the whole decision.
The 2804-20 is discontinued by Milwaukee; 2904-20 is its named replacement.

From the published figures only; no testing. Rated figures from different makers are not measured the same way.

Where they differ

Milwaukee 2904-20: more torque (1,400 in-lbs vs 1,200 in-lbs).
Milwaukee 2804-20: shorter (tool length) (6.9 in vs 6.95 in).
Both are bare tools: no battery or charger in either box.
Milwaukee lists the 2804-20 as discontinued and names the 2904-20 as its replacement.

8 of 15 listed specs differ or are listed by only one maker. Stated from the published figures only; no testing.

Every published spec, side by side

Spec	Milwaukee 2804-20	Milwaukee 2904-20
Max torque (manufacturer rating)Differs2904-20: +200 in-lbs (+16.7%)	1,200 in-lbs	1,400 in-lbs
Max speedDiffers	2,000 RPM	Low 0-500 / High 0-2,100 RPM
Hammer rateDiffers	0-32,000 BPM	High 0-33,000 BPM
Chuck type	All Metal Ratcheting	All Metal Ratcheting
Weight, tool onlyDiffers	3.2 lbs (Tool Only)	3.3 lb
Tool lengthDiffers2904-20: +0.05 in (+0.7%)	6.9 in	6.95 in
Motor	POWERSTATE Brushless	POWERSTATE Brushless
Batteries in box	0	0
Battery capacity (each)	None included	None included
Charger in box	No	No
Chuck size	1/2 in	1/2 in
Warranty	5 Year Limited Warranty	5 Year Limited Warranty
Speed settingsOnly one listed	Not on maker page	2
Clutch settingsOnly one listed	Not on maker page	16
Weight with batteryOnly one listed	Not on maker page	4.9 lb

"Differs" marks different published values; pure formatting is not counted. "Only one listed" marks a spec only one maker page gives. Box contents, owner ratings, manuals and sources are on each model's own page: 2804-20, 2904-20. Swap either model in the compare tool.