A NOTE ABOUT THICKNESSES: All replacement Block Plane blades will be 1/8" thick, unless otherwise noted, (tools with a fixed opening between cap and blade like the 102, where the cap is positioned under a pin riveted in the body of the tool and therefore the maximum thickness the blade can be is fixed) as we prefer to use as thick a blade as possible.
Replacement blades for Bench Planes must be thinner to fit the original Stanley, Record or other makers' Bench Planes. If the blade is too thick, the yoke on your plane will not properly engage the slot in the Chipbreaker, The Chipbreaker Screw may not be long enough to install the Chipbreaker at all, but most important the mouth opening may not be large enough to allow the blade, or a shaving, to pass.
Therefore, Bench Plane blades ordered from the list above, identified by width, will be .095" thick, which will work fine on most Bench Planes. Blades of the same width, ordered as replacement blades for our own planes, identified by the tool number (e.g., BL-4) will be thicker (.125" for the 4 and 5, .140" for the 4-1/2 and .175" for the No. 8.)
(To order replacement blades for Lie-Nielsen tools, see the individual tool pages.)