Husqvarna Poulan 530015793 String Trimmer L.H. Flange Nut 

For:
Husqvarna
Mondo (1997-04) Trimmer
Mondo Max (1997-04) Trimmer
Mondo Mega (1997-04) Trimmer
Mondo Mega (1997-06) Trimmer
BC3150 (2007-02) Handheld Trimmer
PP325 (Type 1) (2008-12) Handheld Trimmer
PP325 (Type 2) (2008-12) Handheld Trimmer
PPB300E (Type 1) (2009-02) Handheld Trimmer
PPB300E (Type 2) (2009-02) Handheld Trimmer
PP336 (2009-02) Handheld Trimmer
PPB300 (2009-02) Handheld Trimmer
PPB350 (2006-12) Handheld Trimmer
125 E (2005-09) Edger
125 E (2006-03) Edger
125 E (2008-01) Edger
125 E (2006-01) Edger
...and more

Also:
Poulan
BC2400P Gas Trimmer
PE3500 Gas Trimmer
PT7000 Gas Trimmer
...and more