18K112 up for sale is a new solid brass machined washer spacer , this measures 4.00 inches OD x 2.026 inner diameter the width is 0.252 just over 1/4 inch , this is precision machined on all surfaces , comes as shown in the photos , nice new part from our warehouse , covered under military nsn 5310-01-443-9592 nice part for many projects, also covered under northrop grumman shipbuilding part number 123-4403562