Please fill out the form below for Coupling Shaft Flex and get a quote for part number 7871X4-12-6 by Helical Products Company Inc with NSN 3010014773301 and FSC Name is 3010 Torque Converters and Speed Changers, 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 7871X4-12-6. ASAP Aerospace distributes nose to tail NSN components, sub-assemblies, and assemblies for the aerospace and aviation industry.