Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4-4-05001 found under Switch Trigger by Rexnord Industries Inc. The National Stock Number assigned to this part is 5930001077107, and the Federal Supply Class is 5930 Switches. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 4-4-05001.