Please fill out the form below for Stud 250 28 X 312 18 X 1 375 Lg and get a quote for part number 40138 by Rolls Royce Plc, 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 40138. ASAP Aerospace distributes nose to tail NSN components, sub-assemblies, and assemblies for the aerospace and aviation industry.