Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number R40K0112-81 found under Hose Assembly Nonmetallic by Ramirez Enterprises. The National Stock Number assigned to this part is 4720010262948, and the Federal Supply Class is 4720 Hose And Flexible Tubing. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like R40K0112-81.