6025-010 1/4 Inches-20 x 9/16 Inches Brass Adapter Nut (10 Pack) - Adapter Nut: Replaces 5/16 Inches - 18 nut on standard battery clamps for post style batteries. Threaded stud on end of adapter allows for convenient addition of auxiliary wires., , Accessories directly connected to the battery should be protected by a fuse or circuit breaker device. Adapter bolts are available in both single (6007) and dual (6008) power lead length. Dual power lead length requires the use of 6706 lead spacer for proper fitment and connectivity., Precision-machined from solid brass,Includes zinc plated steel nut and washer,connects power accessories directly to battery,Fits battery bolt, select from three input threads