Fits most: McCulloch 600, 605, 610 and 650 Partner P55, P70, P100, R16, 550 and 55 Stihl 015, 020, 041, 045, 056, BT120, BT121, E10, E15, FR350, FR3900, FR450, FR480, FS120-FS480, FT250, HT250, MS150, SP200, SP400, SP450, SP451, SP481, TS350, TS400, TS410, TS420, TS460, TS480i, TS500i, TS510 and TS760 chainsaws
- Bar Nut 8mm x 1.25 Flanged
- Replaces Husqvarna 503 220 001
- Replaces Echo 433019-12330