Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PY63481-1-7-6 1-8X3-4 1-8 found under Shaft Shouldered by Pt Components Inc Drive Div. The National Stock Number assigned to this part is 3040002878632, and the Federal Supply Class is 3040 Miscellaneous Power Transmission Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like PY63481-1-7-6 1-8X3-4 1-8.