Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PL0004 found under Setscrew by Phaostron Instrument And Electronic. The National Stock Number assigned to this part is 5305002065899, 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 PL0004.