Please fill out the form below for Restrictor Fluid Flow and get a quote for part number 4M307 by Boeing Company The with NSN 4730012832114 and FSC Name is 4730 Hose Pipe Tube Lubrication and Railing Fittings, 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 4M307. ASAP Aerospace distributes nose to tail NSN components, sub-assemblies, and assemblies for the aerospace and aviation industry.