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

  • M18 BIW12-402C
  • M18 BIW12-202C
  • M18 BIW12-0

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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 (EPTA) (kg) 1.9 (M18 B4)1.6 (M18 B2)1.9 (M18 B4)
Sound power level (Lwa)(dB(A)) 105,1105,1105,1
Sound power level uncertainty (dB(A)) 333
Sound pressure level (Lpa)(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