Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 100581 found under Screw Adjusting by Metadure Parts And Sales Inc. The National Stock Number assigned to this part is 5305007403946, 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 100581.