Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 270-00055 found under Screw Hex by Lister Petter Ltd. The National Stock Number assigned to this part is 5305010844478, 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 270-00055.