Please fill out the form below for Nut Plain Square and get a quote for part number D4203B by Howell Electric Motors Corp with NSN 5310000105604 and FSC Name is 5310 Nuts and Washers, 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 D4203B. ASAP Aerospace distributes nose to tail NSN components, sub-assemblies, and assemblies for the aerospace and aviation industry.