Socket Type Truck Wheel Bearing Locknut. Item Locknut Socket. Locknut Socket, Hand, Natural, 6-Point, Socket Size 3 3/4 in, Bolt Clearance 4 7/16 in, Drive Size 3/4 in, Impact Rated No, Alloy Steel, SAE, Non-Magnetic No, Non-Sparking No, Socket Depth Deep, No.