The drawing breaks down the geometric components of a lag screw and its corresponding pilot hole. It details the unthreaded shank length, thread length excluding the tip, shank diameters, and the specific reduced-diameter predrilled hole profile required for proper timber installation. Callouts provide sizing rules, such as the predrilled pilot hole diameter being 40% to 70% of the unthreaded shank diameter.
Text on the drawing
DIAMETER OF UNTHREADED SHANK DIAMETER OF THREADED SHANK THREAD LENGTH (EXCLUDES TIP LENGTH) UNTHREADED SHANK LENGTH PREDRILLED HOLE PROFILE DIAMETER: 40% TO 70% OF UNTHREADED SHANK DIAMETER DIAMETER OF UNTHREADED SHANK LAG SCREW DIMENSIONS AND PREDRILLED HOLE PROFILE
Members view this detail in full resolution, download the CAD files (SVG, PDF), and open any detail in the built-in CAD editor to edit and export DXF or DWG.
Sign in to subscribe