1/4"-28 x 7/16"-14 Metal Fine Thread Inserts (3 pcs.)

Diameter: 1/4"
Diameter 2: 7/16"
Material: Metal
Thread Size: 28 (Fine)
Type: Thread Insert

Box of 3.

A thread insert is inserted into an object to add a threaded hole. They are used for repairing a stripped threaded hole, providing a more durable threaded hole in softer materials, and molding or casting threads into a workpiece, eliminating an operation.