Christensen Arms Crush Washer 5/8x24 Threads Natural Medium .625X.910. .910in thick. Available in .500in or .625in ID. Comes in pack of 5 qty. Specifications for Christensen Arms Aluminum Crush Washer: Manufacturer: Christensen Arms Condition: New Fabric/Material: Metal Country of Origin: USA Package Contents: Christensen Arms Aluminum Crush Washer Christensen Arms 810-00030-00: Crush Washer 5/8x24 Threads Natural Medium .625X.910