Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 28 0000129 found under Screw Machine by Zero Mfg Inc. The National Stock Number assigned to this part is 5305013423554, and the Federal Supply Class is 5305 Screws. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 28 0000129.