diff --git a/nhf/parts/handle.py b/nhf/parts/handle.py
index 4956618..5a61bed 100644
--- a/nhf/parts/handle.py
+++ b/nhf/parts/handle.py
@@ -153,7 +153,7 @@ class Handle:
             )
         result.faces(">Z").tag("mate")
         if not self.simplify_geometry:
-            thread = self.joint.internal_thread(self.connector_length).val()
+            thread = self.joint.internal_thread(self.insertion_length).val()
             result = result.union(thread)
         for h in holes:
             cyl = Cq.Solid.makeCylinder(