Please fill out the form below for Spring Helical Exte and get a quote for part number A3581 by Allen R C Co Inc with NSN 5360009076173 and FSC Name is 5360 Coil Flat Leaf and Wire Springs, 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 A3581. ASAP Aerospace distributes nose to tail NSN components, sub-assemblies, and assemblies for the aerospace and aviation industry.