Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 439849G2019 found under Coupling Spring Hal by Dare Electronics Inc. The National Stock Number assigned to this part is 3040009480219, 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 439849G2019.