OCFA Chainsaw Familiarization Practice Test

Pitch is the distance between drive links on a saw chain, and in wildland work the common choice is 3/8 inch. This size provides a solid balance between cutting speed and chain durability on the bars and sprockets typically used in field firefighting gear. It’s large enough to deliver aggressive cutting and maintain stability under tough through-brush and timber conditions, yet not so large that the chain becomes unwieldy, harder to sharpen, or overly stressful on smaller wildfire saws. The field inventory and compatibility with standard bars (often in the 18 to 28 inch range) also make 3/8 inch the practical default for wildland applications. Smaller options, like 1/4 inch, tend to be lighter and chatter more under heavy cuts, and larger options, like 1/2 inch, require bigger saws and can slow cutting down in typical field tasks. 5/16 inch sits between and is less commonly chosen for standard wildland setups.