C Clamp w/Locknut Beam Clamp Type C-Clamp Beam Mount Location Bottom Clamp Length 2.25 in Clamp Material Steel Clamp Material Finish Zinc-Plated For Beam Shape/Type H-Beam For Threaded Rod Size 3/8 in Includes Locknut Yes Installation Torque 60 in-lb Load Capacity 230 lb Standards ANSI/MSS SP-69 Type 23 A-A-1192A Type 23 FM Approved MSS SP-58 Type 23 UL Listed WW-H-171-E Type 23