Please fill out the form below for Washer Lock and get a quote for part number SPN-16-SB2 SP16-90233B ITEM 20 by Pbm Inc with NSN 5310014379470 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 SPN-16-SB2 SP16-90233B ITEM 20. ASAP Aerospace distributes nose to tail NSN components, sub-assemblies, and assemblies for the aerospace and aviation industry.