Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 537 1340 00 found under Shaft Straight by Hale Products Inc. The National Stock Number assigned to this part is 3040009400479, 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 537 1340 00.