Description:1.The tee nut has a flat base with prong projections running parallel to the barrel.2.These prong nuts can be used in hard or soft wood as well as plastic or particle board.3.When installed, the tee nut sits flush with the fastened material.4.This zinc coated carbon steel is superior to regular steel and provides excellent rust resistance.5.Rated for both indoor and outdoor use, perfect for use near salt water, fresh water and other projects. Specification:Product Name: Tee NutMaterial: Carbon SteelFinish: Zinc PlatedThread Size: 1/4"-20Height: 10mm / 0.39-inchFlange Diameter: 17.5mm / 0.69-inchBarrel Outer Diameter: 8mm / 0.31-inchPanel Thickness: 1.5mm / 0.06-inchMain Color: Silver BlueWeight: 76g Package Content: 20pcs x Tee Nut.