Got a part number for that file?
From the official UK Husqvarna pdf catalog:
4.0mm ; 5/32" – 2 pack , 510 09 57-01
4.0mm ; 5/32" – 12 pack , 510 09 57-02
4.5mm ; 11/64" – 2 pack , 577 23 37-01
4.8mm ; 3/16" – 2 pack , 510 09 55-01
4.8mm ; 3/16" – 12 pack , 510 09 55-02
5.5mm ; 7/32" – 2 pack , 510 09 56-01
5.5mm ; 7/32" – 12 pack , 510 09 56-02
From the official Croatian Husqvarna website:
4.0mm ; 5/32" – 2 pack , 510 09 57-01
4.0mm ; 5/32" – 3 pack , 597 35 48-01
4.0mm ; 5/32" – 12 pack , 510 09 57-02
4.5mm ; 11/64" – 2 pack , 577 23 37-01
4.5mm ; 11/64" – 3 pack , 597 35 55-01
4.8mm ; 3/16" – 2 pack , 510 09 55-01
4.8mm ; 3/16" – 3 pack , 597 35 58-01
4.8mm ; 3/16" – 12 pack , 510 09 55-02
5.2mm ; 13/64" – 12 pack , 577 23 38-01
5.5mm ; 7/32" – 2 pack , 510 09 56-01
5.5mm ; 7/32" – 3 pack , 597 35 61-01
5.5mm ; 7/32" – 12 pack , 510 09 56-02
The cardboard box I have is for 4.0mm/ 5/32" files and it says clearly "6pcs" on it but has no part number.
There is a dealer sticker on the box and it says 4.0mm 12pcs , part number 597 35 48-02
I purchased single files, one of each diameter, they cost all the same - about 2.5$ a piece, basically the same I pay for Oregon and Stihl round files.