Please fill out the form below for Screw But Hd 4 40Unc X 5 Or 16 Lg and get a quote for part number S0410KBBZP by Contour Engineering Llc, 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 S0410KBBZP. ASAP Aerospace distributes nose to tail NSN components, sub-assemblies, and assemblies for the aerospace and aviation industry.