Type D Flanged Screw-In Insert Nut (1/4"-20 x 0.984") - 12 pc (57114)
by Paulin
Insert nuts are designed to provide machine screw threading to a drilled hole in wood or other soft material. Wide, sharp external protrusions grip the material for a tight, secure hold. Also included in Hillman assortment #57109 / label #98152.