Please fill out the form below for Spark Plug and get a quote for part number WS506 by Federal Specifications with NSN 2920000035158 and FSC Name is 2920 Engine Electrical System Components Nonaircraft, 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 WS506. ASAP Aerospace distributes nose to tail NSN components, sub-assemblies, and assemblies for the aerospace and aviation industry.