M18 BIW12

M18™ ½″ impact wrench



Compact ½″ impact wrench measures 155 mm in length making it ideal for working within confined spaces

High performance 4-pole motor delivers maximum power whilst maximising the power to weight ratio

REDLINK™ overload protection electronics in tool and battery pack deliver best in class system durability

Heavy duty full metal gearbox and gears for superior durability and maximum torque

½″ square drive for use with universal sockets

Individual battery cell monitoring optimises tool run time and ensures long term pack durability

On board fuel gauge and LED light

REDLITHIUM™ battery pack provides superior pack construction, electronics and fade-free performance to deliver more run time and more work over pack life

Flexible battery system: works with all MILWAUKEE® M18™ batteries

Select Model Variant

M18 BIW12-402C

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Range Spec

Product Specifications M18 BIW12-402C M18 BIW12-402C M18 BIW12-202C M18 BIW12-202C M18 BIW12-0 M18 BIW12-0
Article Number 493344360749334435834933443590
Battery pack capacity (Ah) 4.02.0No batteries supplied
Battery type Li-ionLi-ionLi-ion
Impact rate (ipm) 0 - 33500 - 33500 - 3350
Kit included 2 x M18 B4 Battery packs, M12-18 C Charger, Kitbox2 x M18 B2 Battery packs, M12-18 C Charger, Kitbox
Max. torque (Nm) 240240240
No load speed (rpm) 0 - 24500 - 24500 - 2450
No. of batteries supplied 220
Standard equipment Belt hookBelt hookBelt hook
Supplied in KitboxKitboxNo kitbox or bag supplied
Tool reception ½″ square½″ square½″ square
Voltage (V) 181818
Weight with battery pack (kg) 1.91.6 -
Sound power level (dB(A)) 105,1105,1105,1
Sound power level uncertainty (dB(A)) 333
Sound pressure level (dB(A))
Sound pressure level uncertainty (dB(A)) 333
Vibration screw driving (m/s²) 111111
Vibration screw driving uncertainty (m/s²) 1.771.771.77
Manuals & Spare Parts view view view
Product Data A4 DownloadDownloadDownload
Product Data A4 - Landscape DownloadDownloadDownload
Product Data A5 DownloadDownloadDownload
Fact Tag 14.9 x 6.9cm DownloadDownloadDownload
Fact Tag 15.5 x 8.5cm DownloadDownloadDownload