DEWALT DCF921BvsMilwaukee 2563-20
Two impact wrenches, compared from their makers' published US specs. Specs checked 2026-10-18. Makers do not always rate the same way, so treat cross-brand figures with care.
DEWALT DCF921B
Max torque 300 ft-lbsMax breakaway torque 450 ft-lbsMax speed 2,500 rpm (the same DEWALT table also says 2800 rpm no-load speed)
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Find DCF921B prices on Amazon Check the DCF921B 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.Milwaukee 2563-20
Max breakaway torque 550 ft-lbs (Milwaukee: nut-busting torque)Max speed 0-3,000 RPMImpact rate 0-3,300 IPM
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Find 2563-20 prices on Amazon Find 2563-20 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.How to choose between them
- Already own DEWALT 20V MAX batteries? The DCF921B uses them; the 2563-20 needs Milwaukee M12 batteries and a charger.
- Already own Milwaukee M12 batteries? The 2563-20 is the one that fits what you have.
- Starting from nothing: this is a battery-system choice more than a tool choice; compare the kit versions (DCF921P2, 2563-22), which add batteries and a charger.
From the published figures only; no testing. Rated figures from different makers are not measured the same way.
Where they differ
- Different battery systems: DEWALT 20V MAX vs Milwaukee M12. Batteries and chargers do not interchange.
- Milwaukee 2563-20: more breakaway torque (550 ft-lbs (Milwaukee: nut-busting torque) vs 450 ft-lbs).
- Milwaukee 2563-20: higher top speed (0-3,000 RPM vs 2,500 rpm (the same DEWALT table also says 2800 rpm no-load speed)).
- DEWALT DCF921B: higher impact rate (0-3,550 ipm vs 0-3,300 IPM).
- Milwaukee 2563-20: shorter (tool length) (4.9 in vs 4.95 in).
- Both are bare tools: no battery or charger in either box.
10 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 | DEWALT DCF921B | Milwaukee 2563-20 |
|---|---|---|
| Max torque (manufacturer rating)Only one listed | 300 ft-lbs | Not on maker page |
| Max breakaway torque (manufacturer rating)Differs2563-20: +100 ft-lbs (+22.2%) | 450 ft-lbs | 550 ft-lbs (Milwaukee: nut-busting torque) |
| Max speedDiffers | 2,500 rpm (the same DEWALT table also says 2800 rpm no-load speed) | 0-3,000 RPM |
| Impact rateDiffersDCF921B: +250 ipm (+7.6%) | 0-3,550 ipm | 0-3,300 IPM |
| Anvil | 1/2 in | 1/2 in |
| Weight, tool onlyOnly one listed | Not on maker page | 2.2 lb |
| Tool lengthDiffersDCF921B: +0.05 in (+1.0%) | 4.95 in | 4.9 in |
| Motor | Brushless | POWERSTATE Brushless |
| Batteries in box | 0 | 0 |
| Battery capacity (each) | None included | None included |
| Charger in box | No | No |
| Anvil typeDiffers | Hog Ring Anvil | Friction Ring |
| Weight (DEWALT manual figure)Only one listed | 2.47 lbs | Not on maker page |
| CaseOnly one listed | No Case Included | Not on maker page |
| WarrantyDiffers | 3 Year Limited Warranty, 1 Year Free Service, 90 Days Satisfaction Guaranteed | 5 Year Limited Warranty |
"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: DCF921B, 2563-20. Swap either model in the compare tool. copied
DEWALT DCF921B
Max torque 300 ft-lbsMax breakaway torque 450 ft-lbsMax speed 2,500 rpm (the same DEWALT table also says 2800 rpm no-load speed)
Paid link: we may earn a commission.
Find DCF921B prices on Amazon Check the DCF921B 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.Milwaukee 2563-20
Max breakaway torque 550 ft-lbs (Milwaukee: nut-busting torque)Max speed 0-3,000 RPMImpact rate 0-3,300 IPM
Paid link: we may earn a commission.
Find 2563-20 prices on Amazon Find 2563-20 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.Sources
- DEWALT manual for DCF921B (NA517039_DCF921_DCF922_DCF923_T1_NA.pdf), retrieved 2026-10-18
- DEWALT US product page DCF921B (features), retrieved 2026-10-18
- Milwaukee US product page 2563-20 (features), retrieved 2026-10-18
Spotted a wrong number? Report a spec error (opens an email with both models filled in). We re-check against the makers' pages and correct the page.
Researched by Rob, licensed electrician (Australia), 18 years on the tools. Found an error? Tell us.
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