Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number FHS1779 20 A 0 found under Screw Cap Socket He by B And B Specialties Inc. The National Stock Number assigned to this part is 5305011723272, 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 FHS1779 20 A 0.