Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 124-300A ITEM NO. 75 found under Hose Assembly Nonmetallic by Grinnell Fire Protection. The National Stock Number assigned to this part is 4720016238846, 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 124-300A ITEM NO. 75.