A Nutsert is a tubular insert with internal threads that installs from one side of the workpiece.It is designed for applications with limited or no access to the backside.Once installed, it remains permanently attached to the mating material, allowing the mating screw to be removed and reinstalled without dislodging the insert.This aluminum Nutsert features a large flange for support in punched or drilled holes, a knurled body to resist rotation during installation, and a flat head compatible with cap screws.It is compatible with #10-24 UNC threaded fasteners.Dimensions: body diameter 0.275 inch, total length 0.5 inch, required application hole size 0.285 inch.Suitable for use in steel, plastic, and fiberglass.Package contains 100 pieces.Compatible with automotive applications.