Please fill out the form below for Cock Drain and get a quote for part number 29959-E ITEM 309 by Frederick Custom Machining Inc with NSN 4820012218858 and FSC Name is 4820 Valves Nonpowered, please include required quantity along with expected turn around time. Our knowledgeable account manager will reply you shortly. Also check for the related parts for part number 29959-E ITEM 309. ASAP Aerospace distributes nose to tail NSN components, sub-assemblies, and assemblies for the aerospace and aviation industry.