Please fill out the form below for Crystal Unit Quartz and get a quote for part number 666278-057 by Vectron International Inc with NSN 5955004659812 and FSC Name is 5955 Oscillators Piezoelectric Crystals, 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 666278-057. ASAP Aerospace distributes nose to tail NSN components, sub-assemblies, and assemblies for the aerospace and aviation industry.