Clevis Slip Hooks Grade 43 with Latch Designed to be used with Grade 43 or Grade 30 Chain Heat treated pins Hooks are forged, heat treated and tempered Forged in the US from high quality carbon steel Sizes 1/4 inch through 5/8 inch Designs' ultimate strength equals 3 times working load limit, matching NACM specifications Not to be used for overhead lifting Hook Size Working Load Limit Dimensions (inches) Weight P W H R L D in. lb. in. in. in. in. in. in. lb. 1/4 2,600 0.36 2.33 0.72 2.27 2.32 0.31 0.35 5/16 3,900 0.42 2.72 0.77 4.13 2.56 0.38 0.63 3/8 5,400 0.50 3.20 0.86 4.81 3.04 0.44 1.02 7/16 7,200 0.58 3.91 1.02 5.56 3.50 0.50 1.56 1/2 9,200 0.61 4.16 1.12 6.31 4.15 0.55 2.27