Please fill out the form below for Transformer Radio Frequency and get a quote for part number 503SF-D6 2 by University Of Lowell Research with NSN 5950012481147 and FSC Name is 5950 Coils and Transformers, 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 503SF-D6 2. ASAP Aerospace distributes nose to tail NSN components, sub-assemblies, and assemblies for the aerospace and aviation industry.