SF 2-A12 (02)
SF 2H‑A12 (02)

About these operating instructions

• Warning! Read and understand all accompanying documentation, including but not limited to instructions, safety warnings, illustrations, and specifications provided with this product. Familiarize yourself with all the instructions, safety warnings, illustrations, specifications, components, and functions of the product before use. Failure to do so may result in electric shock, fire, and/or serious injury. Save all warnings and instructions for future reference.
  
• products are designed for professional users and only trained, authorized personnel are permitted to operate, service and maintain the products. This personnel must be specifically informed about the possible hazards. The product and its ancillary equipment can present hazards if used incorrectly by untrained personnel or if used not in accordance with the intended use.
  
• The accompanying documentation corresponds to the current state of the art at the time of printing. Please always check for the latest version on the product’s page on Hilti’s website. To do this, follow the link or scan the QR code in this documentation, marked with the symbol .
  
• Ensure that these operating instructions are with the product when it is given to other persons.
  

Explanation of symbols

Warnings

Warnings alert persons to hazards that occur when handling or using the product. The following signal words are used:

Symbols in the operating instructions

The following symbols are used in these operating instructions:

	Comply with the operating instructions
	Instructions for use and other useful information
	Dealing with recyclable materials
	Do not dispose of electric equipment and batteries as household waste
	Hilti Li‑ion battery
	Hilti charger

Symbols in illustrations

The following symbols are used in illustrations:

	These numbers refer to the illustrations at the beginning of these operating instructions.
	The numbers in illustrations refer to important work steps or to components important for the work steps. In the text, the corresponding numbers draw attention to these work steps or components, e.g. (3) .
	Item reference numbers are used in the overview illustration and refer to the numbers used in the key in the product overview section.
	This symbol is intended to draw your special attention to certain points for handling the product.

Product-dependent symbols

Symbols on the product

The following symbols can be used on the product:

	The power tool supports near-field communication (NFC) technology, which is compatible with iOS and Android platforms.
	Li-ion battery
	Hilti Li-ion battery type series used. Observe the information given in the section headed Intended use .
	Never use the battery as a striking tool.
	Do not drop the battery. Never use a battery that has suffered an impact or is damaged in any other way.
	Rated speed under no load
	Revolutions per minute
	Direct current (DC)
	Screwdriving
	Drilling without hammer action
	Drilling with hammer action (hammer drilling)

General power tool safety warnings

WARNING Read all safety warnings, instructions, illustrations and specifications provided with this power tool. Failure to follow all instructions listed below may result in electric shock, fire and/or serious injury.
Save all warnings and instructions for future reference.
The term "power tool" in the warnings refers to your mains-operated (corded) power tool or battery-operated (cordless) power tool.
Work area safety

• Keep work area clean and well lit. Cluttered or dark areas invite accidents.
  
• Do not operate power tools in explosive atmospheres, such as in the presence of flammable liquids, gases or dust. Power tools create sparks which may ignite the dust or fumes.
  
• Keep children and bystanders away while operating a power tool. Distractions can cause you to lose control.
  

Electrical safety

• Power tool plugs must match the outlet. Never modify the plug in any way. Do not use any adapter plugs with earthed (grounded) power tools. Unmodified plugs and matching outlets will reduce risk of electric shock.
  
• Avoid body contact with earthed or grounded surfaces, such as pipes, radiators, ranges and refrigerators. There is an increased risk of electric shock if your body is earthed or grounded.
  
• Do not expose power tools to rain or wet conditions. Water entering a power tool will increase the risk of electric shock.
  
• Do not abuse the cord. Never use the cord for carrying, pulling or unplugging the power tool. Keep cord away from heat, oil, sharp edges or moving parts. Damaged or entangled cords increase the risk of electric shock.
  
• When operating a power tool outdoors, use an extension cord suitable for outdoor use. Use of a cord suitable for outdoor use reduces the risk of electric shock.
  
• If operating a power tool in a damp location is unavoidable, use a residual current device (RCD) protected supply. Use of an RCD reduces the risk of electric shock.
  

Personal safety

• Stay alert, watch what you are doing and use common sense when operating a power tool. Do not use a power tool while you are tired or under the influence of drugs, alcohol or medication. A moment of inattention while operating power tools may result in serious personal injury.
  
• Use personal protective equipment. Always wear eye protection. Protective equipment such as a dust mask, non-skid safety shoes, hard hat or hearing protection used for appropriate conditions will reduce personal injuries.
  
• Prevent unintentional starting. Ensure the switch is in the off-position before connecting to power source and/or battery pack, picking up or carrying the tool. Carrying power tools with your finger on the switch or energising power tools that have the switch on invites accidents.
  
• Remove any adjusting key or wrench before turning the power tool on. A wrench or a key left attached to a rotating part of the power tool may result in personal injury.
  
• Do not overreach. Keep proper footing and balance at all times. This enables better control of the power tool in unexpected situations.
  
• Dress properly. Do not wear loose clothing or jewellery. Keep your hair and clothing away from moving parts. Loose clothes, jewellery or long hair can be caught in moving parts.
  
• If devices are provided for the connection of dust extraction and collection facilities, ensure these are connected and properly used. Use of dust collection can reduce dust-related hazards.
  
• Do not let familiarity gained from frequent use of tools allow you to become complacent and ignore tool safety principles. A careless action can cause severe injury within a fraction of a second.
  

Power tool use and care

• Do not force the power tool. Use the correct power tool for your application. The correct power tool will do the job better and safer at the rate for which it was designed.
  
• Do not use the power tool if the switch does not turn it on and off. Any power tool that cannot be controlled with the switch is dangerous and must be repaired.
  
• Disconnect the plug from the power source and/or remove the battery pack, if detachable, from the power tool before making any adjustments, changing accessories, or storing power tools. Such preventive safety measures reduce the risk of starting the power tool accidentally.
  
• Store idle power tools out of the reach of children and do not allow persons unfamiliar with the power tool or these instructions to operate the power tool. Power tools are dangerous in the hands of untrained users.
  
• Maintain power tools and accessories. Check for misalignment or binding of moving parts, breakage of parts and any other condition that may affect the power tool’s operation. If damaged, have the power tool repaired before use. Many accidents are caused by poorly maintained power tools.
  
• Keep cutting tools sharp and clean. Properly maintained cutting tools with sharp cutting edges are less likely to bind and are easier to control.
  
• Use the power tool, accessories and tool bits etc. in accordance with these instructions, taking into account the working conditions and the work to be performed. Use of the power tool for operations different from those intended could result in a hazardous situation.
  
• Keep handles and grasping surfaces dry, clean and free from oil and grease. Slippery handles and grasping surfaces do not allow for safe handling and control of the tool in unexpected situations.
  

Battery tool use and care

• Recharge only with the charger specified by the manufacturer. A charger that is suitable for one type of battery pack may create a risk of fire when used with another battery pack.
  
• Use power tools only with specifically designated battery packs. Use of any other battery packs may create a risk of injury and fire.
  
• When battery pack is not in use, keep it away from other metal objects, like paper clips, coins, keys, nails, screws or other small metal objects, that can make a connection from one terminal to another. Shorting the battery terminals together may cause burns or a fire.
  
• Under abusive conditions, liquid may be ejected from the battery; avoid contact. If contact accidentally occurs, flush with water. If liquid contacts 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 damaged or modified. Damaged or modified batteries may exhibit unpredictable behaviour resulting in fire, explosion or risk of injury.
  
• Do not expose a battery pack or tool to fire or excessive temperature. Exposure to fire or temperature above 130° C (265 °F) may cause explosion.
  
• Follow all charging instructions and do not charge the battery pack or tool outside the temperature range specified in the instructions. Charging improperly or at temperatures outside the specified range may damage the battery and increase the risk of fire.
  

Service

• Have your power tool serviced by a qualified 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 authorized service providers.
  

Drill safety warnings

SF 2-A12
Safety instructions for all operations

• Hold the power tool by insulated gripping surfaces, when performing an operation where the cutting accessory or fasteners may contact hidden wiring. Cutting accessory or fasteners contacting a "live" wire may make exposed metal parts of the power tool "live" and could give the operator an electric shock.
  

SF 2H‑A12
Safety instructions for all operations

• Wear ear protectors when impact drilling. Exposure to noise can cause hearing loss.
  
• Hold the power tool by insulated gripping surfaces, when performing an operation where the cutting accessory or fasteners may contact hidden wiring. Cutting accessory or fasteners contacting a "live" wire may make exposed metal parts of the power tool "live" and could give the operator an electric shock.
  

Safety instructions when using long drill bits

• Never operate at higher speed than the maximum speed rating of the drill bit. At higher speeds, the bit is likely to bend if allowed to rotate freely without contacting the workpiece, resulting in personal injury.
  
• Always start drilling at low speed and with the bit tip in contact with the workpiece. At higher speeds, the bit is likely to bend if allowed to rotate freely without contacting the workpiece, resulting in personal injury.
  
• Apply pressure only in direct line with the bit and do not apply excessive pressure. Bits can bend causing breakage or loss of control, resulting in personal injury.
  

Careful handling and use of batteries

• Observe the special guidelines applicable to the transport, storage and use of lithium-ion batteries.
  
• Do not expose batteries to high temperatures, direct sunlight or fire.
  
• Do not disassemble, crush or incinerate batteries and do not subject them to temperatures over 80 °C (176 °F).
  
• Do not use or charge batteries that have suffered mechanical impact, have been dropped from a height or show signs of damage. In this case, always contact your Hilti  Service .
  
• If the battery is too hot to touch it may be defective. Put the battery in a place where it is clearly visible and where there is no risk of fire, at an adequate distance from flammable materials. Allow the battery to cool down. If it is still too hot to touch after an hour, the battery is faulty. Contact Hilti Service .
  

Additional safety instructions

Personal safety

• Use the product only when it is in perfect working order.
  
• Never tamper with or modify the tool in any way.
  
• Do not look directly into the light source (LEDs) integrated in the drill/driver and do not direct the light at other persons’ faces. This presents a risk of dazzling or eye damage.
  
• Avoid touching rotating parts. Switch the power tool on only after bringing it into position at the workpiece. Touching rotating parts, especially rotating accessory tools, may lead to injury.
  
• Wear protective gloves also when changing the accessory tool. Touching the accessory tool presents a risk of injury (cuts or burns).
  
• Always hold the tool securely by the grip. If the accessory tool (e.g. the drill bit) sticks and stalls, the power tool, due to its high torque, may tend to rotate about its own axis in the direction opposite to that of the accessory tool.
  
• Make sure that the workplace is well ventilated and, where necessary, wear a respirator appropriate for the type of dust generated. Contact with or inhalation of the dust may cause allergic reactions and/or respiratory or other diseases to the operator or bystanders. Certain kinds of dust are classified as carcinogenic such as oak and beech dust, especially in conjunction with additives for wood conditioning (chromate, wood preservative). Material containing asbestos may be handled only by specialists.
  
• Take breaks and exercise your fingers to improve the blood circulation. Exposure to vibration during long periods of work can lead to disorders of the blood vessels and nervous system in the fingers, hands and wrists.
  

Electrical safety

• Before beginning work, check the working area for concealed electric cables or gas and water pipes. External metal parts of the power tool may give you an electric shock if you damage an electric cable accidentally.
  

Power tool use and care

• Secure the workpiece. Use clamps or a vice to hold the workpiece in position. The workpiece is thus held more securely than by hand and both hands remain free to operate the power tool.
  
• Immediately switch off the power tool if the accessory tool jams. The power tool might twist off-line.
  
• Wait until the power tool stops completely before you lay it down.
  

Product overview

1. Keyless chuck
   
2. Torque setting ring
   
3. Function setting ring (only SF 2H ‑A)
   
4. Gear selector switch
   
5. Forward/reverse switch with switch-on interlock
   
6. Grip
   
7. LED light
   
8. Belt hook (optional)
   
9. Battery state of charge indicator
   
10. Battery release button
    
11. Control switch with speed control
    

Intended use

The product described is a hand-held cordless drill / driver for driving and removing screws, drilling in metal, wood and plastic.

• Use only Hilti Li‑ion batteries of the B 12 series with this product.

• Use only Hilti battery chargers of the C4/12 series for charging these batteries.

Charge status display

The charge status of the Li‑ion battery is displayed after pressing the release button.

Status	Meaning
4 LEDs light.	Charge status: 75 % to 100 %
3 LEDs light.	Charge status: 50 % to 75 %
2 LEDs light.	Charge status: 25 % to 50 %
1 LED lights.	Charge status: 10 % to 25 %
1 LED blinks.	Charge status: < 10 %

Overload and overheating protection

The power tool is equipped with an electronic system to protect against overloading and overheating. The power tool switches itself off automatically in the event of overloading or overheating. After releasing the control switch, the power tool may not restart immediately when the switch is pressed again (while the power tool is cooling down).

Items supplied

(Hammer) drill / driver, operating instructions.

Technical data

		SF 2-A12	SF 2H-A12
Product generation		02	02
Rated voltage		10.8 V	10.8 V
Weight		1.1 kg (2.4 lb)	1.2 kg (2.6 lb)
Speed	1st gear	0 /min … 400 /min	0 /min … 400 /min
	2nd gear	0 /min … 1,560 /min	0 /min … 1,560 /min
Torque (soft joint)		≤ 21 Nm (≤ 15 ftlbf)	≤ 21 Nm (≤ 15 ftlbf)
Torque range (15 settings)		0.5 Nm … 5 Nm (0.4 ftlbf … 4 ftlbf)	0.5 Nm … 5 Nm (0.4 ftlbf … 4 ftlbf)
Keyless chuck clamping range		0.8 mm … 10 mm (0.03 in … 0.4 in)	0.8 mm … 10 mm (0.03 in … 0.4 in)
Ø drill bit (softwood)		0.046875 in … 0.546875 in	0.046875 in … 0.546875 in
Ø drill bit (hardwood)		0.046875 in … 0.390625 in	0.046875 in … 0.390625 in
Ø drill bit (metal)		0.046875 in … 0.234375 in	0.046875 in … 0.234375 in
Ambient temperature for operation		−17 ℃ … 60 ℃ (1 ℉ … 140 ℉)	−17 ℃ … 60 ℃ (1 ℉ … 140 ℉)
Storage temperature		−20 ℃ … 70 ℃ (−4 ℉ … 158 ℉)	−20 ℃ … 70 ℃ (−4 ℉ … 158 ℉)

Battery

Battery operating voltage	10.8 V
Ambient temperature for operation	−17 ℃ … 60 ℃ (1 ℉ … 140 ℉)
Storage temperature	−20 ℃ … 40 ℃ (−4 ℉ … 104 ℉)
Battery charging starting temperature	−10 ℃ … 45 ℃ (14 ℉ … 113 ℉)

Charging the battery

1. Before charging the battery, read the operating instructions for the charger.
   
2. Make sure that the contacts on the battery and the contacts on the charger are clean and dry.
   
3. Use an approved charger to charge the battery.
   

Inserting the battery

1. Charge the battery fully before using it for the first time.
   
2. Push the battery into the product until it engages with an audible click.
   
3. Check that the battery is seated securely.
   

Removing the battery

1. Press the battery release buttons.
   
2. Remove the battery from the tool.
   

Fitting the belt hook (optional)

1. Remove the battery.
   
2. Insert the belt hook in the opening provided at the base of the screwdriver’s grip.
   
3. Secure the belt hook with the 2 screws.
   

Fitting the accessory tool

1. Set the forward/reverse switch to the middle position or remove the battery from the power tool.
   
2. Open the keyless chuck.
   
3. Insert the accessory tool in the tool holder and then turn the keyless chuck firmly until tight.
   
4. Check that the accessory tool is held securely.
   

Selecting the gear

• Select the gear.
  

Setting the torque

• Set the desired torque.
  
  • The torque is limited only when the power tool is set to screwdriving mode .
    

Setting forward or reverse rotation

• Set the forward/reverse switch to the desired direction of rotation.
  
  • An interlock prevents switching while the motor is running. In the middle position the switch is locked (switch-on interlock).
    

Selecting the function

SF 2H‑A12

• Select the desired function.
  

Screwdriving

1. Set the function selector ring to the “screwdriving” position .
   
2. Set the torque setting ring to the desired torque.
   
3. Set the forward/reverse switch to the desired direction of rotation.
   

Drilling

1. Set the function setting ring/torque setting ring to the “drilling” position .
   
2. Set the forward/reverse switch to the “forward” position.
   

Hammer drilling

SF 2H‑A12

1. Set the function selector ring to the “hammer drilling” position .
   
2. Set the forward/reverse switch to the “forward” position.
   

Switching on

• Press the control switch.
  
  • Speed of rotation is regulated by the distance the control switch is pressed in.
    

Switching off

• Release the control switch.
  

Removing the accessory tool

1. Set the forward/reverse switch to the middle position or remove the battery from the power tool.
   
2. Open the keyless chuck.
   
3. Pull the accessory tool out of the chuck.
   

Troubleshooting

If the trouble you are experiencing is not listed in this table or you are unable to remedy the problem by yourself, please contact Hilti Service.