Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number M24149 4B found under Stud Welding by National Aerospace Standards. The National Stock Number assigned to this part is 5307012395158, and the Federal Supply Class is 5307 Studs. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like M24149 4B.