Please fill out the form below for 1 Or 2 Sq 4130 Cm Stl Bar Mil S 6758 and get a quote for part number 12 SQ MIL-S-6758 by Hawker Beechcraft Ltd, 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 12 SQ MIL-S-6758. ASAP Aerospace distributes nose to tail NSN components, sub-assemblies, and assemblies for the aerospace and aviation industry.