Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MB-A-0074 found under Chain Fastener Flat by Aluminum Chambered Boats Inc. The National Stock Number assigned to this part is 4030015440280, and the Federal Supply Class is 4030 Fittings For Rope Cable And Chain. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like MB-A-0074.