Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AS637H3 found under Shaft Shouldered by Caro Inc. The National Stock Number assigned to this part is 3040011102579, 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 AS637H3.