Please fill out the form below for Nut Special and get a quote for part number 648-12 by Rolls Royce Controls And with NSN 5310004676876 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 648-12. ASAP Aerospace distributes nose to tail NSN components, sub-assemblies, and assemblies for the aerospace and aviation industry.