3/8"-16 x 7/16" Zinc Brad Hole Tee Nuts TNS-104 (6 pcs.)

Diameter: 3/8"
Length: 7/16"
Material: Steel
Finish: Zinc
Drill Size: 15/32"
Thread Size: 16 (Coarse)
Shape: Round
Style: Brad Hole
Type: Tee Nut

Box of 6.

Tee nuts are generally used in soft wood to provide a stronger surface for a screw or bolt to mount into.