Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number JSFB15V4-9 found under Screw Close Toleran by B And B Specialties Inc. The National Stock Number assigned to this part is 5305016461430, 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 JSFB15V4-9.