Dimensional parameters and predrilled hole profile for a lag screw connection in timber construction. The detail identifies the unthreaded shank diameter, unthreaded shank length, threaded shank diameter, and thread length excluding the tip length. The corresponding predrilled hole profile specifies a diameter ranging from 40% to 70% of the unthreaded shank diameter.
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
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