Milwaukee identifies 2904-20 as the M18 FUEL 1/2-inch Hammer Drill/Driver. The US listing used here is 2904-20. Two speeds; mechanical clutch; hammer mode; AUTOSTOP bind-up over-rotation control; side handle.
Battery platform
M18
Controls and model distinctions
Two speeds; mechanical clutch; hammer mode; AUTOSTOP bind-up over-rotation control; side handle
Tool and package identity
The 2904-20 listing is tool-only, with battery and charger sold separately. The separately verified 2904-22 package lists: 2904-20 hammer drill; 2 × 48-11-1850 M18 XC5.0 batteries; 48-59-1812 M18/M12 charger; side handle; blow-molded case.
Document applicability
Printed code 58149998d1 / 961014344-01(B), 01/22; English/French/Spanish; 2903-20 is non-hammer sibling.
Check before you follow
Identity & documentation.
- Brand
- Milwaukee
- Model
- 2904-20
- Tool type
- Cordless hammer drill/driver
- Market
- United States
- US product listing
- 2904-20
- Bulletin starting serial
- M64A (confirm applicability)
- Evidence level
- Manufacturer documentation; no physical testing
A source check date records this research pass. It does not confirm that a manual is the newest possible revision, a tool is still in production, or a particular unit matches these documents.
Manuals & service references
Identify the right document.
These are document reference records, not downloadable manuals. Original manufacturer files are not provided here. Match the exact model and revision before use. A parts reference does not authorize internal repair.
Operator manualPDF
2903-20/2904-20 operator manual 58-14-9998d1
Model identified in this document
Printed code 58149998d1 / 961014344-01(B), 01/22; English/French/Spanish; 2903-20 is non-hammer sibling.
Document checked
Parts referencePDF
2904-20 service parts bulletin 54-24-2990, revised file
Model identified in this document
May 2025; serial field M64A; printed bulletin number omits filename R.
Document checked
Keep the limits in view.
- Documentation-based guide; no hands-on testing, durability ranking, or independent performance claim.
- Manufacturer listing is live at check date; latest generation, stock, price and recall completeness not established.
- Parts diagram is an identification/reference link, not authorization or instructions for owner internal repair.
- Confirm full nameplate model, type or serial and region before selecting a document or service part.
Read the instructions for the tool and any applicable battery or charger together. Routine owner care stays outside the housing; internal service belongs with the manufacturer or an authorized service provider.
Keep reading
Milwaukee: explore this brand’s tool references
Guides for this model
Explore controls, comparisons and documentation for this exact model.
- Milwaukee: platform before mode
Existing M12 small-hole users can start with 3403; tight-access M18 users with 3601. Larger wood holes or suitable masonry can justify 2904 bulk.
- Plan for drill reaction
On 2904-20, engage the handle hooks in the gear-case ring slots and tighten the grip. If walls or clamps prevent safe two-hand clearance, change the setup rather than remove the required handle.
- 2904 AUTOSTOP and grip
AUTOSTOP retains its last setting after a battery change. Keep the side handle securely fitted and never deliberately jam a bit to test protection.
- 3601 or 2904?
Consider 3601 for small holes, assembly and restricted access; choose 2904 when larger wood holes or suitable masonry justify its size and weight.
- Choose M12 or M18
Existing equipment can avoid duplicate purchases, not replace capability checks. The 48-59-1812 charges both families but does not make their packs interchangeable.
- Milwaukee service identity
Record full catalog and serial numbers, then compare the bulletin header and date; an R filename does not replace revision matching.
- Milwaukee kit contents
3403 pairs 4Ah with 2Ah, 3601 supplies two 2Ah packs, and 2904 two 5Ah packs. Deduct usable equipment already owned before comparing complete cost.
The reading behind this guide
Source records describe the evidence used for this guide. Original manufacturer files and external videos are not provided here.
Sources & references.
Manufacturer documents and public safety references are the starting point. Check each source’s scope and confirm the exact model, market, and revision for your tool.
- Milwaukee Tool: 2904-20 US product listing
Checked
Document checked
Listed at check time; not a stock check, discontinuation audit, or claim to be newest generation.
- Milwaukee Tool: 2903-20/2904-20 operator manual 58-14-9998d1
Checked · Pages Full11-spread PDF downloaded; printed3 on PDFpage2 capacities; side handle and AUTOSTOP operating boundaries.
Document checked
Printed code 58149998d1 / 961014344-01(B), 01/22; English/French/Spanish; 2903-20 is non-hammer sibling.
- Milwaukee Tool: 2904-20 service parts bulletin 54-24-2990, revised file
Checked
Document checked
May 2025; serial field M64A; printed bulletin number omits filename R.
- Milwaukee Tool: 2904-22 US kit listing
Checked
Document checked
Pack contents are specific to this listing; do not decode all suffixes from these examples.