Check the listing for details. (7) 1/4"-20 Carbon Steel Solid Insert For Metal. Condition: New. Listed at 14.00 USD. 1/4"-20 Carbon Steel Solid Insert For Metal UNSPSC23291804ManufacturerFastenal Approved Vendor Product AttributesApplicationMetalExternal Thread Size7/16"-14Internal Thread Size1/4"-20Length0.437"MaterialSteelMinimum Hole Depth1/2"StyleHeavy WallSystem of MeasurementImperial (Inch)Tap Drill Size0.359"Thread TypeCoarseTypeThreaded InsertProduct Weight0.026UOMpackage of 2NotesSolid, self-locking thread repair insert designed for use in soft metals, like aluminum, magnesium, and cast iron. Standard drill and tap are used for hole preparation. Can be installed with screwdriver, bolt/jam nut, or optional drive toolStrong, solid construction design; self-locking; use standard tools for hole preparation; install with screwdriver, bolt/jam nut, or optional drive tool Used to repair or reinforce tapped holes in soft metals, such as aluminum, magnesium, and cast iron. To repair a tapped hole, simply overdrill and retap to the required size. Thread the insert into place with a screwdriver, bolt/jam nut, or optional drive tool. Preapplied adhesive on the external threads activates upon installation and locks the insert in place.