Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number ZZH451 found under Hose Assembly Nonmetallic Fire F by Federal Specifications. The National Stock Number assigned to this part is 4210000789169, and the Federal Supply Class is 4210 Firefighting Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like ZZH451.