Hitachi NT50AF Manuel D’Utilisation

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This Tool was designed for use in installing unfinished hardwood 

flooring. It can be used to install pre‑finished flooring when used 

with the pre‑finish flooring accessory shoe; however, caution must 

be used to ensure that the finish is not damaged by the Tool. In all 

flooring applications, it is recommended that the Tool be tested on 

a sample section to be certain that the Tool and technique of use do 

not leave marks on the finish. This procedure should be followed 

before each job due to variations in flooring and Tool condition.

After squaring the floor and allowing for expansion as recommend‑

ed by the Wood Flooring Industry (NWFA, NOFMA and MFMA), 

install felt vapor barrier and use chalk line to identify location of 

subfloor nails prior to racking wood to be installed. This will help 

prevent hitting subfloor nails which can cause damage to the driver 

blade and jamming.  Place the grooved edge of the first row of 

flooring towards the wall on the side of the room from which you 

are starting.

Face nail first four (4) rows of flooring. 

Install the tongue and groove shoe.

Place the groove of the fifth row of flooring over the tongue of the 

fourth row of flooring and tighten using the hammer. Depress the 

safety trigger, and tap ram head of the Tool with the tongue and 

groove shoe installed.

Slide the Tool along the tongue of the flooring to the location at 

which you desire to place the next fastener.

Continue until you have completely fastened all but the last five (5) 

rows of flooring.

Install and face nail in place the remaining five (5) rows of flooring.