Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 31-119918-4007 found under Screw Machine by Gould Instrument Systems Inc. The National Stock Number assigned to this part is 5305000545650, 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 31-119918-4007.