Please fill out the form below for Screw Shoulder and get a quote for part number KBK-506 by In Speck Corporation with NSN 5305007859076 and FSC Name is 5305 Screws, 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 KBK-506. ASAP Aerospace distributes nose to tail NSN components, sub-assemblies, and assemblies for the aerospace and aviation industry.