Abstract: An installation tool for a wire thread insert having an inner surface with an inner helical thread, and an outer surface with an outer helical thread, the installation tool including: an elongate body (1) having a passage (3) extending there through between opposing ends thereof; a mandrel (5) supported within said passage and movable parallel to and rotatable about an elongate axis of the passage (3), the mandrel having a threaded portion (15) at one end thereof upon which a said wire thread insert can be threaded; wherein a delivery nozzle (21) having a threaded discharge port (17) is provided at one end of the tool for engaging the outer helical thread of a said wire thread insert, at least the delivery nozzle (21) being formed of a self-lubricating material.