Chainsaw Chain & Bars
What Pitch of Chain Do I Have ?Simply use a ruler ot tape measure to find the distance in mm across three consecutive rivets - this will tell you the chain pitch. To find out how many links, just count the links.
3/8" - this type of chain saw has a distance between three consecutive rivets of about 19.2 mm and is available with a thickness of 1.1mm, 1.3mm, 1.5mm.
.325" - this type of chain saw has a distance between three consecutive rivets of about 16.7 mm and is available with a thickness of 1.3mm, 1.5mm, 1.6mm.
1/4" - this type of chain saw has a distance between three consecutive rivets of about 12.8 mm and is only available with a thickness of 1.3 mm.
How to find the chain thickness and pitch - the easy wayWe have found that the easiest way to find both the pitch and thickness of a chain is to just look at the code stamped onto one of the links. Every chain should have an identifying code - look at the example pic.
Just find the code and compare it to our table below. For example a code "91" as shown, is a 3/8 pitch at 1.3mm thickness - easy! (On some Stihl chains we have found the number is split between the cutting tooth and drive link.)
Then it's just a case of counting the "links" - a link being the downward protruding bit, as shown with the "91" on our picture.
1/4 x 1.3mm 3/8 x 1.1mm 3/8 x 1.3mm 3/8 x 1.5mm 3/8 x 1.6mm .325 x 1.3mm .325 x 1.5mm .325 x 1.6mm Oregon 25 90 91 or 72 73 75 95 or 20 21 22 Carlton E1 N4 N1 or A1 A2 A3 K1 K2 K3 Stihl 13 61 63 or 33RM 35RM1 or 35RS1 36RM 23RM2 25RS 26RM2 Windsor 50K 43RG 50AG, 50R or 50RG 58AG or 58APLG 63AG 50J 58J or 58JL 63J Husqvarna H00 H51, H35 or H36 H49 or H42 H44 H30 or H22 H25 or H21 H28 McCulloch M370 or PM370 PM378 or SPR378 PM373 PM320 SPR328