Genuine Husqvarna Screw Part #: 503 21 28-13 Fits 120iB, 136 LiC, 136 LiHD50, 250 R, 250 RX, 315iC, 320iB Mark II, 320iB
Genuine Husqvarna Screw Part #: 503 20 25-12 Fits 365 SPECIAL EPA, 365, 372 XP, 385 XP, 372 XP EPA, 362 XP SPECIAL EPA, 371 XP, 385 XP EPA