background image

3

keys, nails, screws or other small metal objects, 

that can make a connection from one terminal to 

another. 

Shorting the battery terminals together may 

 Under abusive conditions, liquid may be ejected 

from  the  battery;  avoid  contact.  If  contact  ac-

-

tacts eyes, additionally seek medical help. 

Liquid 

ejected from the battery may cause irritation or burns.

 Do not use a battery pack or tool that is dam-

Damaged 

may exhibit unpredictable behavior resulting in

explosion or risk of injury.

 Do 

excessive temperature. 

-

perature above 130°C (265°F) may cause explosion.

 Follow  all  charging  instructions  and  do  not 

charge  the  battery  pack  or  tool  outside  the 

Charging improperly or at temperatures outside the 

SERVICE

 Ha

repair person using only identical replacement 

parts. 

This will ensure that the safety of the power 

tool is maintained.

 Never  service  damaged  battery  packs. 

Service 

of battery packs should  only be performed  by the 

manufacturer or authorised service providers.

SPECIFIC SAFETY RULES FOR 

IMPACT WRENCHES

 Hold power tool by insulated gripping surfaces, 

when performing an operation where the fastener 

may contact hidden wiring. 

Fasteners contacting 

a “live” wire may make exposed metal parts of the 

power tool “live” and could give the operator an electric 

shock.

 Wear ear protectors when impact drilling. 

Expo-

sure to noise can cause hearing loss.

 Use 

-

cally designed for use on impact wrenches and 

drivers. 

Other sockets and accessories might shatter 

or break causing injury.

 

 

WARNING

Some dust created by power sanding, 

sawing,  grinding,  drilling,  and  other 

construction activities contains chemicals known to 

cause  cancer,  birth  defects  or  other  reproductive 

harm. Some examples of these chemicals are:

 lead from lead-based paint

 crystalline silica from bricks and cement and other 

masonry products, and

 arsenic and chromium from chemically-treated lumber.

 Your risk from these exposures varies, depending on 

how often you do this type of work. To reduce your 

exposure to these chemicals: work in a well ventilated 

area, and work with approved safety equipment, such 

as those dust masks that are specially designed to 

SYMBOLOGY

 

  

Volts

 

 

Direct Current

 

  No Load Revolutions per Minute (RPM)

 

  Impacts per Minute Under Load (IPM)

 

 

SPECIFICATIONS

Volts .............................................................. 18 DC

Battery Type .................................................M18™

Charger

 Type ................................................M18™

Recommended Ambient 

   Operating Temperature .....................-17°C to 51°C

Cat. No. ....................................M18 ONEFHIWP12

Anvil Type ...................................... 1/2" Square-Pin

RPM ............................................................. 0-1800

IPM .............................................................. 0-2400

Cat. No. ....................................M18 ONEFHIWF12

Anvil Type ....................................1/2" Square-Ring

RPM ............................................................. 0-1750

IPM .............................................................. 0-2100

Cat. No. ....................................M18 ONEFHIWF34

Anvil Type ....................................3/4" Square-Ring

RPM ............................................................. 0-1800

IPM .............................................................. 0-2400

FUNCTIONAL DESCRIPTION

1. 1/2" Square drive anvil with pin detent

(M18 ONEFHIWP12)

2. Control switch

3. Trigger

4. 4-Mode Drive Control

5. LED

6. Handle

7. 1/2" Square drive anvil with friction ring

(M18 ONEFHIWF12)

8. 3/4" Square drive anvil with friction ring

(

021()+,:)

1

2

4

5

3

7

6

8

ASSEMBLY

WARNING

Recharge  only  with  the  charger 

-

manual supplied with your charger and battery.

Removing/Inserting the Battery

To 

remove

 the battery, push in the release buttons 

and pull the battery pack away from the tool.

Maintain labels and nameplates. 

These carry 

important information. If unreadable or missing, 

contact a 

MILWAUKEE

®

 service facility for a 

replacement.

ADDITIONAL BATTERY SAFETY RULES

To reduce the risk of fire, personal 

injury, and product damage due to a 

 

WARNING

short circuit, never immerse your tool, battery pack or 

charger in fluid or allow a fluid to flow inside them. 

Corrosive or conductive fluids, such as seawater, 

certain industrial chemicals, and bleach or 

bleach-containing products, etc., can cause a short 

circuit.

Regulatory Compliance Mark 

(RCM). This product meets 

applicable regulatory requirements.

Reviews: