Owned and operated by ASAP Semiconductor, ASAP NSN Parts is your new one-stop-shop for all your disc holder valve NSN parts and components related needs. Our goal is to make the parts purchasing process as simple as possible. With us, you can find disc holder valve with NSN 4810-01-077-9143, 4820-01-177-0003, 4820-01-177-8768 and manufactured by Accurate Screwmachine Corporatio, Naval Inventory Control Point Mechanicsburg, William Powell Company The at some of the most competitive prices in the market. Just fill out and submit an RFQ to get started on a quick and competitive quote.