The drawing shows a lag screw fastener passing through a wood side member into a main timber member. It highlights specific installation criteria including standard washers unless otherwise noted (UON), unthreaded shank requirements, thread length specifications (minimum 4 times bolt diameter excluding tip), and predrilled lead hole profiles for both the shank and threaded portions.
Text on the drawing
PREDRILL LEAD HOLE FOR SHANK AND THREADS, SEE PREDRILLED HOLE PROFILE BELOW UNTHREADED SHANK PER DETAIL STD WASHER UON LAG SCREW PER DETAIL WOOD SIDE MEMBER THREAD LENGTH PER DETAIL, 4xBOLT DIA MIN (EXCLUDES TIP LENGTH) AT WOOD SIDE MEMBER
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