Milwaukee 3404-20vs3404-22

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

The Milwaukee 3404-20 and 3404-22 are two package options for the exact same 3404 hammer drill on the Milwaukee M12 platform. Tool performance specs are identical; the 3404-20 is the bare tool (no battery or charger), while the 3404-22 kit adds M12 REDLITHIUM XC 4.0 Extended Capacity Battery Pack [48-11-2440], M12 REDLITHIUM CP2.0 Battery [48-11-2420], M12 Lithium-ion Battery Charger [48-59-2401], Contractor Bag. All figures below come from published US manufacturer specifications and operator manuals; we have not hands-on tested these units.

Milwaukee 3404-20

BARE TOOLMilwaukee M12

Max torque 400 in-lbsMax speed 0-1,550 RPMHammer rate LO 0-6,750 / HI 0-22,500 BPM

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Milwaukee 3404-22

KITMilwaukee M12

Max torque 400 in-lbsMax speed 0-1,550 RPMHammer rate LO 0-6,750 / HI 0-22,500 BPM

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How to choose between them

Both run on Milwaukee M12 batteries, so your existing packs and chargers fit either tool.
The 3404-22 adds batteries and a charger to the same tool; the 3404-20 suits someone who already owns them.
Evidence boundary: 1 spec row is published by only one maker in the table below; unstated figures are treated as unknown rather than assumed.

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

Where they differ

In the box: the 3404-20 has no battery or charger; the 3404-22 has M12 REDLITHIUM XC 4.0 Extended Capacity Battery Pack [48-11-2440]; M12 REDLITHIUM CP2.0 Battery [48-11-2420], charger.

4 verified spec differences across 12 specs published for both models (1 spec is listed by only one maker). Stated from the published figures only; no testing.

What they share

Same battery system (Milwaukee M12): both tools run on the same packs and chargers.
Same tool category: both are hammer drills.
Matching published specs: Max torque: 400 in-lbs; Max speed: 0-1,550 RPM; Hammer rate: LO 0-6,750 / HI 0-22,500 BPM; Tool length: 6 in; Motor: POWERSTATE Brushless; Chuck size: 1/2 in.

Published by only one maker (data gaps)

Warranty: 3404-22 lists 5 Years (Charger), 2 Years (Battery); not listed on 3404-20's US maker page.

A missing value means the manufacturer page does not publish that figure; we never guess or count an unstated spec as a verified difference.

Bare tool vs kit cost calculator (3404-20 vs 3404-22)

Enter current prices from your preferred retailer to see what you are paying for the bundled battery and charger in the 3404-22 kit. We do not pre-fill live store prices unless supplied by an approved feed within our freshness window.

Bare tool price (3404-20, $) Kit price (3404-22, $) Compatible Milwaukee M12 batteries you own Own a compatible charger? Est. value of bundled battery(ies) ($, optional) Est. value of bundled charger ($, optional)

Enter the current 3404-20 and 3404-22 prices above to compare the kit premium against the bundled M12 REDLITHIUM XC 4.0 Extended Capacity Battery Pack [48-11-2440], M12 REDLITHIUM CP2.0 Battery [48-11-2420], M12 Lithium-ion Battery Charger [48-59-2401], Contractor Bag.

Every published spec, side by side

Spec	Milwaukee 3404-20	Milwaukee 3404-22
Max torque (manufacturer rating)	400 in-lbs	400 in-lbs
Max speed	0-1,550 RPM	0-1,550 RPM
Hammer rate	LO 0-6,750 / HI 0-22,500 BPM	LO 0-6,750 / HI 0-22,500 BPM
Chuck typeDiffers	All Metal Ratcheting	Keyless
Tool length	6 in	6 in
Motor	POWERSTATE Brushless	POWERSTATE Brushless
Batteries in boxDiffers	0	2
Battery capacity (each)Differs	None included	2.0 Ah + 4.0 Ah
Charger in boxDiffers	No	Yes
Chuck size	1/2 in	1/2 in
Speed settings	2	2
Clutch settings	12	12
WarrantyOnly one listed	Not on maker page	5 Years (Charger), 2 Years (Battery)

"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: 3404-20, 3404-22. Swap either model in the compare tool.