' T-Anchor, Toggle, Gravity Activated, Size (In.) 3/8 x 4-1/2, Ultimate Pullout (Lb.) 1000, Ultimate Shear (Lb.) 3000, Anchor Dia./Drill Bit Sz. (In.)/TPI 3/8, Max. Work Thickness (In.) 3-1/8, Thread Length (In.) 1.8 In., Grip Range (In.) 7/8 - 3-1/8, Meets/Exceeds G.S.A. FF-B-588C, A.N.S.I. A58.1, A.S.T.M. B-633, Includes Body, Nut, Washer, Anchor Length (In.) 4-1/2, Bolt Dia. (In.) / Threads/In. 3/8 - 16, Box Count 4 per pack, Head Style Nut, Hole Dia. (In.) 3/8, Shank Length (In.) 4-1/2 '