Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 51 448 PC 345 found under Stud Plain by Mechanical Equipment Company Inc. The National Stock Number assigned to this part is 5307013076859, 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 51 448 PC 345.