Embodiments herein relate to structural assemblies for fenestration units including a fastener system for leak resistant structural member attachment. In an embodiment, a frame assembly for a fenestration unit is included having a first frame member and a second frame member, wherein the second frame member engages with the first frame member. The frame assembly further includes a leak resistant fastener assembly securing the second frame member to the first frame member. The leak resistant fastener assembly can include a threaded fastener, a shoulder element, a deformable sealing member, and a washer. Insertion of the threaded fastener into the first frame member and the second frame member causes the washer to compress the deformable sealing member forming a face seal and causes the shoulder of the threaded fastener to expand the deformable sealing member radially forming an edge seal. Other embodiments are also included herein.

A frame assembly supporting an overhead door has a horizontal header connected to upright columns or posts with splice assemblies. Fasteners mounted on the columns cooperate with retainers on the splice assemblies to position and connect the columns to the header. Hinge assemblies pivotally mount the door on the header for movement between open and closed positions.

A frame assembly supporting an overhead door has a horizontal header connected to upright columns or posts with splice assemblies. Fasteners mounted on the columns cooperate with retainers on the splice assemblies to position and connect the columns to the header. Hinge assemblies pivotally mount the door on the header for movement between open and closed positions.

One or more embodiments includes a door assembly with a door jamb and a door header. A connection system is provided that directs the weight of the door header directly into the door jamb. Load on the fasteners is reduced by the connection system along with the potential for slippage for the door header after installation.