Fit guide

Milwaukee M12 Model Numbers Explained

Milwaukee's model numbers look cryptic, but they follow a simple pattern. Once you know it, you can tell which tool you have, which generation it is and which Simon Tools bit holder fits it. You'll find the number on the label on your tool.

Example: M12 Fuel impact driver kit
3453-22
① Series② Tool type③ What's in the box
First two digits① Series
24 Original M12 range and early M12 Fuel models
25 M12 Fuel Gen 2 and Surge
34 M12 Fuel Gen 3 (newest)
Last two digits (examples)② Tool type
53 M12 Fuel 1/4" hex impact driver
62 Standard M12 impact driver
51 Surge hydraulic driver
03 Drill/driver
04 Hammer drill
01, 02, 06 1/4" hex screwdriver
The ending③ What's in the box
-20 Tool only, no battery or charger
-21, -22 Kit with battery and charger

The ending doesn't change the tool itself, so it doesn't affect which holder fits. A 3453-20 and a 3453-22 take the same holder.

Which bit holder fits my M12 tool?

The screw-mounted M12 Bit Holder does not fit the M12 Subcompact. Have a different model number? Ask us and we'll tell you what fits.

Quick answers

What does -20 mean on a Milwaukee tool?

-20 means bare tool: you get the tool only, without battery or charger. Kits end in -21, -22 and so on. The tool inside is the same.

Does the M12 Bit Holder fit the 3453-22 kit?

Yes. The 3453-22 is the same impact driver as the 3453-20, just sold with batteries and a charger. Choose the Gen3 version of the M12 Bit Holder.

Which bit holder fits my M12 2462, 2401, 2406 or 2402?

They take the Adhesive Bit Holder for Milwaukee M12, a set of two low-profile silicone holders that mount flush on the tool body with 3M adhesive.

How do I know if my M12 Fuel impact driver is Gen 2 or Gen 3?

Check the model number on the label. 2453 is Gen 1, 2553 is Gen 2 and 3453 is Gen 3.

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