Milwaukee 2864-20 M18 Fuel One-Key High Torque Impact Wrench 3/4 Inch
- 1500 Foot Pounds torque
- 3/4 inch square drive, SAE (inch)
- 18 Volts, battery operated
- Bare tool, battery sold separately
- 5 year warranty
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A cordless three quarter inch high torque impact wrench with a stated torque figure, sold as a bare tool. Plan on batteries and a charger from the same platform.
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ASIN: B07BQKRQCPModel: 2864-20Category: Impact Drivers & Wrenches
Overview
A hammer and anvil mechanism delivers rapid rotational blows on this Milwaukee high torque impact wrench. It uses a three quarter inch square drive, a socket end and One-Key connectivity named in the item title.
The reason to buy is high torque in a cordless body for large fasteners, wheel work and equipment repair. The limit is the extra gear: it is a bare tool, so batteries and a charger must already be owned.
Who it's for
Large nuts, lug nuts and equipment repair are the intended work. Hobbyists who only turn small bolts will find the tool oversized, so a compact impact driver is a better fit.
Pros and cons
- Very high stated torque
- Large three quarter inch drive
- Long warranty period
- One-Key connectivity named
- Bare tool, battery separate
- Heavy at the listed weight
- Inch drive only, no metric listing
Performance notes
The impact mechanism stores rotational energy and releases it in short hits, which breaks fasteners loose that steady torque cannot. A larger drive handles higher loads. Battery size and age affect how consistently it delivers the rated torque.
Specifications
| Brand | MILWAUKEE |
|---|---|
| Model | 2864-20 |
| Dimensions & fit | |
| Item Length | 218 Millimeterslower than 57% of 128 impact drivers & wrenches |
| Item weight | 7 Pounds |
| Capacity & performance | |
| Jaw Capacity | 0.75 Incheshigher than 83% of 71 impact drivers & wrenches |
| Power & efficiency | |
| Voltage | 18 Volts |
| Construction & materials | |
| Material Type | Metal, Rubber |
| Color | Red |
| Finish Types | Painted |
| Included components | |
| Unit Count | 1.0 Count |
| Warranty & support | |
| Manufacturer Warranty Description | 5 yr warranty on material and workmanship |
| Other details | |
| Item Torque | 1500 Foot Poundshigher than 95% of 116 impact drivers & wrenches |
| Head Style | Round |
| Operation Mode | Battery |
| Measurement Standard | SAE (Inch) |
| End Style | Socket End |
| Is Racheting | Yes |
| Is Non Sparking | No |
| Item Type Name | Fuel One-Key 3/4" High Torque Impact (Bare) |
Closest rivals on specs
Milwaukee 2864-20 M18 Fuel One-Key High Torque Impact Wrench 3/4 Inch- Item Weight 7 vs 6.3 pounds (+11%)
DEWALT DCF900B 20V Max 1/2 in High Torque Impact Wrench- Voltage 18 vs 20 volts (-10%)
Frequently asked questions
How big and heavy is the Milwaukee 2864-20?
The listing gives an item length of 218 millimeters and a weight of 7 pounds.
Does it include a battery?
No. The item name says bare, so batteries and a charger are separate.
Is it a ratcheting tool?
The listing marks it as ratcheting with a socket end.