Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number L4600003-003 found under Diffuser Bleed Air Fan by Hi Shear Corporation. The National Stock Number assigned to this part is 2995011484190, and the Federal Supply Class is 2995 Miscellaneous Engine Accessories Aircraft. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like L4600003-003.