Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 3M1273V3-4 found under Screw Machine by B And B Specialties Inc. The National Stock Number assigned to this part is 5305014622743, 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 3M1273V3-4.