Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 437306ITEM32 found under Screw Cap Socket He by Western Filter A Division Of. The National Stock Number assigned to this part is 5305016314967, 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 437306ITEM32.