Please fill out the form below for Nut Plain Hexagon and get a quote for part number 21AX 314 by Mack Trucks Inc with NSN 5310011479632 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 21AX 314. ASAP Aerospace distributes nose to tail NSN components, sub-assemblies, and assemblies for the aerospace and aviation industry.