Please fill out the form below for Spring Helical and get a quote for part number 6L3990 by Holt Bros with NSN 5342009836002 and FSC Name is 5342 Hardware Weapon System, 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 6L3990. ASAP Aerospace distributes nose to tail NSN components, sub-assemblies, and assemblies for the aerospace and aviation industry.