Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number H29-12K found under Valve Assembly 3Rd Stage by Mako Compressors Llc. The National Stock Number assigned to this part is 4310010757380, and the Federal Supply Class is 4310 Compressors And Vacuum Pumps. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like H29-12K.