Please fill out the form below for Triac Hi443 Ht36 Hi43sg and get a quote for part number 56-5Q4008-516 by Whelen Engineering Company Inc, 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 56-5Q4008-516. ASAP Aerospace distributes nose to tail NSN components, sub-assemblies, and assemblies for the aerospace and aviation industry.