Please fill out the form below for Pilot Counterbore and get a quote for part number AT489B3 by Snap On Incorporated with NSN 3460009323309 and FSC Name is 3460 Machine Tool Accessories, 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 AT489B3. ASAP Aerospace distributes nose to tail NSN components, sub-assemblies, and assemblies for the aerospace and aviation industry.