Please fill out the form below for Nut Plain Blind Riv and get a quote for part number GN512B4R421 by Bollhoff Rivnut Inc with NSN 5310000676584 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 GN512B4R421. ASAP Aerospace distributes nose to tail NSN components, sub-assemblies, and assemblies for the aerospace and aviation industry.